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Question 28-1 : Three aircraft 1 2 and 3 arrive successively at ten minute intervals overhead the scene of a recent aircraft accident . aircraft 1 is unable to establish contact with the search and rescue centre. aircraft 2 is able to contact the search and rescue centre. ? [ Professional DGAC ]
1 then by mutual consent 2 and then 3
Icao annex 12 search and rescue .5 6 2 1 if the first aircraft to reach the scene of an accident is not a search and rescue aircraft it shall take charge of on scene activities of all other aircraft subsequently arriving until the first search and rescue aircraft reaches the scene of the accident if in the meantime such aircraft is unable to establish communication with the appropriate rescue coordination centre or air traffic services unit it shall by mutual agreement hand over to an aircraft capable of establishing and maintaining such communications until the arrival of the first search and rescue aircraft
Question 28-2 : Icao annex 12 search and rescue .contracting states shall establish a rescue co ordination centre ?
In each search and rescue region
Question 28-3 : Search and rescue signals .what is the meaning of the symbol lll in the ground air visual signal code for use by rescue units ?
Operation completed
Annex 12 search and rescue . 802
Question 28-4 : How are search and rescue regions in remote areas organised ?
By regional air navigation agreements
Ecqb04 october 2017..annex 12 search and rescue .chapter 2 organization.2 1 search and rescue services.2 1 1 contracting states shall individually or in cooperation with other states arrange for the establishment and prompt provision of search and rescue services within their territories to ensure that assistance is rendered to persons in distress such services shall be provided on a 24 hour basis . 2 1 1 1 those portions of the high seas or areas of undetermined sovereignty for which search and rescue services will be established shall be determined on the basis of regional air navigation agreements contracting states having accepted the responsibility to provide search and rescue services in such areas shall thereafter individually or in cooperation with other states arrange for the service to be established and provided in accordance with the provisions of this annex . note the phrase 'regional air navigation agreements' refers to the agreement approved by the council of icao normally on the advice of regional air navigation meetings
Question 28-5 : Search and rescue signals .a team of rescuers is searching for an aircraft that is believed to have run out of fuel they mark the ground with white stripes with the signal 'xx' .this means ?
We are not able to continue returning to base
Annex 12 search and rescue . 802
Question 28-6 : Search and rescue signals .the meaning of an x displayed by survivors on the ground is ?
Require medical assistance
Annex 12 search and rescue . 802
Question 28-7 : Search and rescue – what does the ground air visual signal 'x' as used by survivors mean ?
Require medical assistance
Refer to figure . icao annex 12 . appendix search and rescue signals . 2 ground air visual signal code . 2 1 ground air visual signal code for use by survivors 'v' = require assistance 'n' = no or negative 'y' = yes or affirmative 'x' = require medical assistance
Question 28-8 : Those portions of the high seas or areas of undetermined sovereignty for which search and rescue services will be established shall be determined on what ?
On the basis of regional air navigation agreements
Icao annex 12.chapter 2 organization.2 1 search and rescue services.2 1 1 1 those portions of the high seas or areas of undetermined sovereignty for which search and rescue services will be established shall be determined on the basis of regional air navigation agreements contracting states having accepted the responsibility to provide search and rescue services in such areas shall thereafter individually or in cooperation with other states arrange for the services to be established and provided in accordance with the provisions of this annex
Question 28-9 : The unit responsible for promoting efficient organisation of search and rescue services and for co ordinating the conduct of search and rescue operations within a search and rescue region is the… ?
Rescue co ordination centre rcc
Icao annex 12.rescue coordination centre rcc a unit responsible for promoting efficient organization of search and rescue services and for coordinating the conduct of search and rescue operations within a search and rescue region
Question 28-10 : Whenever a distress transmission is intercepted by a pilot in command of an aircraft the pilot shall if feasible ?
Acknowledge the distress transmission and record the position of the aircraft in distress if given
Icao annex 12.chapter 55 7 procedures for a pilot in command intercepting a distress transmission .whenever a distress transmission is intercepted by a pilot in command of an aircraft the pilot shall if feasible a acknowledge the distress transmission .b record the position of the craft in distress if given .c take a bearing on the transmission .d inform the appropriate rescue coordination center or air traffic services unit of the distress transmission giving all available information and .e at the pilot’s discretion while awaiting instructions proceed to the position given in the transmission
Question 28-11 : If the first aircraft to reach the scene of an accident is not a search and rescue aircraft what action must it take until the arrival of the first search and rescue aircraft ?
Take charge of on scene activities of all other arriving aircraft
Icao annex 12.5 6 procedures at the scene of an accident.5 6 2 1 if the first aircraft to reach the scene of an accident is not a search and rescue aircraft it shall take charge of on scene activities of all other aircraft subsequently arriving until the first search and rescue aircraft reaches the scene of the accident if in the meantime such aircraft is unable to establish communication with the appropriate rescue coordination centre or air traffic services unit it shall by mutual agreement hand over to an aircraft capable of establishing and maintaining such communications until the arrival of the first search and rescue aircraft
Question 28-12 : In accordance with annex 12 what does the ground air visual signal code lll used by rescue units mean ?
Operation completed
Refer to figure .icao annex 12.appendix search and rescue signals.2 ground air visual signal code.2 2 ground air visual signal code for use by rescue units'lll' = operation completed'll' = we have found all personnel '++' = we have found only some personnel 'x'= require medical assistance
Question 28-13 : In accordance with annex 12 what does the ground air visual signal code ++ used by rescue units mean ?
We have found only some personnel
Refer to figure icao annex 12.appendix search and rescue signals.2 ground air visual signal code.2 2 ground air visual signal code for use by rescue units'lll' = operation completed 'll' = we have found all personnel '++' = we have found only some personnel 'x'= require medical assistance
Question 28-14 : Search and rescue during the hours of daylight which of the following signals made by aircraft mean that the ground signals have been understood ?
Rocking the aircraft`s wings
Icao annex 12.appendix search and rescue signals.3 air to ground signals.3 1 the following signals by aircraft mean that the ground signals have been understood .a during the hours of daylight .— by rocking the aircraft’s wings .b during the hours of darkness .— flashing on and off twice the aircraft’s landing lights or if not so equipped by switching on and off twice its navigation lights .3 2 lack of the above signal indicates that the ground signal is not understood
Question 28-15 : According to icao annex 12 emergency phase means… ?
Uncertainty phase alert phase or distress phase
Icao annex 12.emergency phase a generic term meaning as the case may be uncertainty phase alert phase or distress phase
Question 28-16 : According to icao annex 12 what does rescue coordination centre mean ?
A unit responsible for promoting efficient organisation of search and rescue services and for coordinating the conduct of search and rescue operations within a search and rescue region
Icao annex 12 . chapter 1 definitionsrescue coordination centre rcc a unit responsible for promoting efficient organization of search and rescue services and for coordinating the conduct of search and rescue operations within a search and rescue region
Question 28-17 : What ground air visual signal can survivors use to tell an aircraft they are going in a particular direction ?
An arrow pointing in that direction
Refer to figure .icao annex 12.appendix search and rescue signals.2 ground air visual signal code.2 1 ground air visual signal code for use by survivors.. 'v' = require assistance. 'n' = no or negative. 'y' = yes or affirmative. 'x' = require medical assistance. an arrow = proceeding in this direction
Question 28-18 : Icao annex 12 defines the state of registry as the state… ?
On whose register the aircraft is entered
Icao annex 12 search and rescue . .chapter 1 1 2 .state of registry the state on whose register the aircraft is entered
Question 28-19 : Which one of the following examples indicates an 'uncertainty phase' situation ?
When the position of an aircraft is uncertain
According to icao annex 12 an emergency phase is a generic term meaning as the case may be uncertainty phase alert phase or distress phase .. uncertainty phase incerfa a situation wherein uncertainty exists as to the safety of an aircraft and its occupants . alert phase alerfa a situation wherein apprehension exists as to the safety of an aircraft and its occupants . distress phase detresfa a situation wherein there is a reasonable certainty that an aircraft and its occupants are threatened by grave and imminent danger and require immediate assistance .. let's examine the given options .. . when there is a potential for a collision this would correspond to the distress phase detresfa as it indicates a serious and immediate danger requiring urgent assistance . . . when the position of an aircraft is uncertain this corresponds to the uncertainty phase incerfa where there is concern due to a lack of information on the aircraft's position . . . when an aircraft has experienced a technical malfunction this generally corresponds to the alert phase alerfa indicating a situation where there is concern for the aircraft's safety but it is not yet in the distress phase . . . when an aircraft is known to be in an emergency situation this corresponds to the distress phase detresfa where the aircraft is in grave and imminent danger and requires immediate assistance
Question 28-20 : Member states should introduce specific security measures for the air transport of the following groups of potentially disruptive passengers defined below ?
Deportees inadmissible persons and persons in lawful custody
Question 28-21 : An aircraft which is being subjected to unlawful interference hijacked and is forced to divert from the cleared track or cruising level without being able to communicate with ats shall try to ?
Continue at an altitude that differs from the semi circular rule with 1000 feet when above fl 290 and 500 feet when lower than fl 290
Question 28-22 : Each state of icao annex 17 shall ensure the establishment of a security programme ?
At each airport
Icao annex 17 .3 2 airport operations.3 2 1 each contracting state shall require each airport serving civil aviation to establish implement and maintain a written airport security programme appropriate to meet the requirements of the national civil aviation security programme .3 2 2 each contracting state shall ensure that an authority at each airport serving civil aviation is responsible for coordinating the implementation of security controls .3 2 3 each contracting state shall ensure that an airport security committee at each airport serving civil aviation is established to assist the authority mentioned under 3 2 2 in its role of coordinating the implementation of security controls and procedures as specified in the airport security programme .3 2 4 each contracting state shall ensure that airport design requirements including architectural and infrastructure related requirements necessary for the implementation of the security measures in the national civil aviation security programme are integrated into the design and construction of new facilities and alterations to existing facilities at airports
Question 28-23 : The aircraft commander when he has reasonable grounds to believe that a person has committed or is about to commit on board the aircraft an offence against penal law ?
May deliver such person to the competent authorities
The convention of tokyo article 6 .the aircraft commander may when he has reasonable grounds to believe that a person has committed or is about to commit on board the aircraft an offence or act contemplated in article 1 paragraph 1 impose upon such person reasonable measures including restraint which are necessary .. . a to protect the safety of the aircraft or of persons or property therein or.. . b to maintain good order and discipline on board or.. . c to enable him to deliver such person to competent authorities or to disembark him in accordance with the provisions of this chapter .. .2 the aircraft commander may require or authorize the assistance of other crew members and may request or authorize but not require the assistance of passengers to restrain any person whom he is entitled to restrain any crew member or passenger may also take reasonable preventive measures without such authorization when he has reasonable grounds to believe that such action is immediately necessary to protect the safety of the aircraft or of persons or property therein ..notice the aircraft commander may request the assistance of passengers but he can not require the assistance of passengers .the aircraft commander can disembark such person without requesting him to disembark
Question 28-24 : The icao annex 17 comprise rules in order to establish security measures for passengers ?
Cabin baggage checked baggage cargo and other goods access control and airport design
Annex 17 security .chapter 4 preventive security measures. 4 1 objective .4 1 1 each contracting state shall establish measures to prevent weapons explosives or any other dangerous devices articles or substances which may be used to commit an act of unlawful interference the carriage or bearing of which is not authorized from being introduced by any means whatsoever on board an aircraft engaged in civil aviation . 4 2 measures relating to access control .4 2 1 each contracting state shall ensure that the access to airside areas at airports serving civil aviation is controlled in order to prevent unauthorized entry .4 2 2 each contracting state shall ensure that security restricted areas are established at each airport serving civil aviation designated by the state based upon a security risk assessment carried out by the relevant national authorities .4 3 measures relating to aircraft.4 4 measures relating to passengers and their cabin baggage.4 4 measures relating to passengers and their cabin baggage.4 5 measures relating to hold baggage.4 6 measures relating to cargo mail and other goods
Question 28-25 : The national civil aviation security programme shall be established by ?
Each contracting state
Annex 17 security .each contracting state shall establish and implement a written national civil aviation security programme to safeguard civil aviation operations against acts of unlawful interference through regulations practices and procedures which take into account the safety regularity and efficiency of flights
Question 28-26 : When a member state allows police officers security staff bodyguards or other agents of foreign states to carry weapons in their territory for the protection of aircraft in flight permission for the carriage of weapons should be conditional upon ?
Prior notification by the state of embarcation to the foreign state in which the weapons will be carried on the airport of arrival and notification of the pilot in command of a decision to permit a weapon to be carried on board his aircraft
Question 28-27 : When an aircraft subjected to an unlawful interference has landed it shall notify by the most expeditious means of the state of registry of the aircraft and the state of the operator of the landing and shall similarly transmit all other relevant information to the ?
Two aforementioned states each state whose citizens suffered fatalities or injuries each state whose citizens were detained as hostages each state whose citizens are known to be on board the aircraft and the icao
Annex 17 security .5 2 reports.5 2 2 a contracting state in which an aircraft subjected to an act of unlawful interference has landed shall notify by the most expeditious means the state of registry of the aircraft and the state of the operator of the landing and shall similarly transmit by the most expeditious means all other relevant information to .a the two above mentioned states .b each state whose citizens suffered fatalities or injuries .c each state whose citizens were detained as hostages .d each state whose citizens are known to be on board the aircraft .e the icao .. 718.famous picture of twa pilot john testrake aboard hijacked flight 847 in beirut 1985
Question 28-28 : When mixing or contact does take place between passengers subjected to security control and other persons not subjected to such control after the security screening points at airports serving international civil aviation have been passed ?
The passengers concerned and their cabin baggage shall be re screened before boarding an aircraft
Annex 17 security .4 4 measures relating to passengers and their cabin baggage. .4 4 4 each contracting state shall ensure that passengers and their cabin baggage which have been screened are protected from unauthorized interference from the point of screening until they board their aircraft if mixing or contact does take place the passengers concerned and their cabin baggage shall be re screened before boarding an aircraft
Question 28-29 : Security measures apply to ?
Airport design
Icao annex 17 .3 2 airport operations.3 2 1 each contracting state shall require each airport serving civil aviation to establish implement and maintain a written airport security programme appropriate to meet the requirements of the national civil aviation security programme .3 2 2 each contracting state shall ensure that an authority at each airport serving civil aviation is responsible for coordinating the implementation of security controls .3 2 3 each contracting state shall ensure that an airport security committee at each airport serving civil aviation is established to assist the authority mentioned under 3 2 2 in its role of coordinating the implementation of security controls and procedures as specified in the airport security programme .3 2 4 each contracting state shall ensure that airport design requirements including architectural and infrastructure related requirements necessary for the implementation of the security measures in the national civil aviation security programme are integrated into the design and construction of new facilities and alterations to existing facilities at airports
Question 28-30 : An area suitable for the parking of an aircraft which is know or believed to be subject of unlawful interference should be located at the maximum distance practicable and in any case never less than from other parking positions buildings or public areas etc ?
100 m
Icao annex 14 aerodrome .volume i aerodrome design and operations.chapter 3 physical characteristics.3 14 isolated aircraft parking position .3 14 1 an isolated aircraft parking position shall be designated or the aerodrome control tower shall be advised of an area or areas suitable for the parking of an aircraft which is known or believed to be the subject of unlawful interference or which for other reasons needs isolation from normal aerodrome activities .3 14 2 recommendation the isolated aircraft parking position should be located at the maximum distance practicable and in any case never less than 100 m from other parking positions buildings or public areas etc
Question 28-31 : Who is helping the state provide security for the airports ?
Airport security committee
Annex 17 security .3 2 3 each contracting state shall arrange for the establishment of an airport security committee at each airport serving international civil aviation to assist the authority mentioned under 3 2 2 in its role of coordinating the implementation of security controls and procedures as specified in the airport security programme
Question 28-32 : Definition of security the icao annex 17 is a combination of measures ?
And human and material resources intended to safeguard civil aviation against acts of unlawful interference
Annex 17 security .chapter 1 definitions.security safeguarding civil aviation against acts of unlawful interference this objective is achieved by a combination of measures and human and material resources
Question 28-33 : What instructions would be given to an aircraft subject to unlawful interference hi jack ?
Directed to an isolated parking position
Icao doc 4444 . chapter 15 procedures related to emergencies communication failure and contingencies . .15 1 3 10 an aircraft known or believed to be the subject of unlawful interference or which for other reasons needs isolation from normal aerodrome activities shall be cleared to the designated isolated parking position where such an isolated parking position has not been designated or if the designated position is not available the aircraft shall be cleared to a position within the area or areas selected by prior agreement with the aerodrome authority the taxi clearance shall specify the taxi route to be followed to the parking position this route shall be selected with a view to minimizing any security risks to the public other aircraft and installations at the aerodrome .. icao annex 14 aerodrome .3 14 isolated aircraft parking position .3 14 1 an isolated aircraft parking position shall be designated or the aerodrome control tower shall be advised of an area or areas suitable for the parking of an aircraft which is known or believed to be the subject of unlawful interference or which for other reasons needs isolation from normal aerodrome activities .3 14 2 recommendation the isolated aircraft parking position should be located at the maximum distance practicable and in any case never less than 100 m from other parking positions buildings or public areas etc care should be taken to ensure that the position is not located over underground utilities such as gas and aviation fuel and to the extent feasible electrical or communication cables
Question 28-34 : If an aircraft subjected to an act of unlawful seizure has landed on its territory a contracting state shall .1 detain the aircraft on ground .2 deliver food and water but turn down requests for fuel .3 let the aircraft depart if it is necessary to protect human life ?
1 3
Question 28-35 : Which of the following statements is correct concerning the flight crew compartment door ?
This door shall be capable of being locked
Ecqb04 october 2017..icao annex 6 . 13 2 security of the flight crew compartment .13 2 1 in all aeroplanes which are equipped with a flight crew compartment door this door shall be capable of being locked and means shall be provided by which cabin crew can discreetly notify the flight crew in the event of suspicious activity or security breaches in the cabin ..13 2 2 from 1 november 2003 all passenger carrying aeroplanes of a maximum certificated take off mass in excess of 45500 kg or with a passenger seating capacity greater than 60 shall be equipped with an approved flight crew compartment door that is designed to resist penetration by small arms fire and grenade shrapnel and to resist forcible intrusions by unauthorized persons this door shall be capable of being locked and unlocked from either pilot's station ..13 2 3 in all aeroplanes which are equipped with a flight crew compartment door in accordance with 13 2 2 .a this door shall be closed and locked from the time all external doors are closed following embarkation until any such door is opened for disembarkation except when necessary to permit access and egress by authorized persons and.b means shall be provided for monitoring from either pilot's station the entire door area outside the flight crew compartment to identify persons requesting entry and to detect suspicious behaviour or potential threat
Question 28-36 : In all aeroplanes which are equipped with a flight crew compartment door this door shall be closed and locked from ?
The time all external doors are closed following embarkation until any such door is opened for disembarkation
Icao annex 6 operation of aircraft . 13 2 security of the flight crew compartment .13 2 1 in all aeroplanes which are equipped with a flight crew compartment door this door shall be capable of being locked and means shall be provided by which cabin crew can discreetly notify the flight crew in the event of suspicious activity or security breaches in the cabin .13 2 2 all passenger carrying aeroplanes .a of a maximum certificated take off mass in excess of 54 500 kg or.b of a maximum certificated take off mass in excess of 45 500 kg with a passenger seating capacity greater than 19 or.c with a passenger seating capacity greater than 60.shall be equipped with an approved flight crew compartment door that is designed to resist penetration by small arms fire and grenade shrapnel and to resist forcible intrusions by unauthorized persons this door shall be capable of being locked and unlocked from either pilot's station .13 2 3 in all aeroplanes which are equipped with a flight crew compartment door in accordance with 13 2 2 .a this door shall be closed and locked from the time all external doors are closed following embarkation until any such door is opened for disembarkation except when necessary to permit access and egress by authorized persons and.b means shall be provided for monitoring from either pilot's station the entire door area outside the flight crew compartment to identify persons requesting entry and to detect suspicious behaviour or potential threat
Question 28-37 : During the approach the gpws has activated and the pilot received a 'pull up' warning after the revision of the flight data monitoring system the investigators saw that the aircraft was only 20 ft above the terrain this scenario is classified as ?
Serious incident
Icao annex 13 . .definitions.incident an occurence other than an accident associated with the operation of an aircraft which affects or could affect the safety of operation .note the types of incidents which are of main interest to the international civil aviation organization for accident prevention studies are listed in attachment c .attachment c list of examples of serious incidents . .3 the incidents listed are examples of what may be serious incidents however the list is not exhaustive and depending on the context items on the list may not be classified as serious incidents if effective defences remained between the incident and the credible scenario .. near collisions requiring an avoidance manoeuvre to avoid a collision or an unsafe situation or when an avoidance action would have been appropriate .
Question 28-38 : After landing while taxiing the landing gear sinks into a hole no person gets injured but the aircraft sustains structural failure which delays the departure which of the following correctly describes the situation and following action ?
This is an accident the crew must follow the procedure relevant to this case
Icao annex 13 aircraft accident and incident investigation .accident an occurrence associated with the operation of an aircraft which in the case of a manned aircraft takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked or in the case of an unmanned aircraft takes place between the time the aircraft is ready to move with the purpose of flight until such time as it comes to rest at the end of the flight and the primary propulsion system is shut down in which .a a person is fatally or seriously injured as a result of . being in the aircraft or. direct contact with any part of the aircraft including parts which have become detached from the aircraft or. direct exposure to jet blast .except when the injuries are from natural causes self inflicted or inflicted by other persons or when the injuries are to stowaways hiding outside the areas normally available to the passengers and crew or.b the aircraft sustains damage or structural failure which . adversely affects the structural strength performance or flight characteristics of the aircraft and. would normally require major repair or replacement of the affected component .except for engine failure or damage when the damage is limited to a single engine including its cowlings or accessories to propellers wing tips antennas probes vanes tires brakes wheels fairings panels landing gear doors windscreens the aircraft skin such as small dents or puncture holes or for minor damages to main rotor blades tail rotor blades landing gear and those resulting from hail or bird strike including holes in the radome or.c the aircraft is missing or is completely inaccessible .for information . serious incident an incident involving circumstances indicating that there was a high probability of an accident and associated with the operation of an aircraft which in the case of a manned aircraft takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked or in the case of an unmanned aircraft takes place between the time the aircraft is ready to move with the purpose of flight until such time as it comes to rest at the end of the flight and the primary propulsion system is shut down . the difference between an accident and a serious incident lies only in the result .pdf661
Question 28-39 : The aircraft has made a complete stop on the apron when leaving the aircraft one of the passengers walks into the trailing edge of the wing and gets seriously injured what is this and what reporting procedure must be followed ?
An accident and the crew must follow the procedure relevant to this case
Icao annex 13 aircraft accident and incident investigation .accident an occurrence associated with the operation of an aircraft which in the case of a manned aircraft takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked or in the case of an unmanned aircraft takes place between the time the aircraft is ready to move with the purpose of flight until such time as it comes to rest at the end of the flight and the primary propulsion system is shut down in which .a a person is fatally or seriously injured as a result of . being in the aircraft or. direct contact with any part of the aircraft including parts which have become detached from the aircraft or. direct exposure to jet blast .except when the injuries are from natural causes self inflicted or inflicted by other persons or when the injuries are to stowaways hiding outside the areas normally available to the passengers and crew or.b the aircraft sustains damage or structural failure which . adversely affects the structural strength performance or flight characteristics of the aircraft and. would normally require major repair or replacement of the affected component .except for engine failure or damage when the damage is limited to a single engine including its cowlings or accessories to propellers wing tips antennas probes vanes tires brakes wheels fairings panels landing gear doors windscreens the aircraft skin such as small dents or puncture holes or for minor damages to main rotor blades tail rotor blades landing gear and those resulting from hail or bird strike including holes in the radome or.c the aircraft is missing or is completely inaccessible .for information . serious incident an incident involving circumstances indicating that there was a high probability of an accident and associated with the operation of an aircraft which in the case of a manned aircraft takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked or in the case of an unmanned aircraft takes place between the time the aircraft is ready to move with the purpose of flight until such time as it comes to rest at the end of the flight and the primary propulsion system is shut down . the difference between an accident and a serious incident lies only in the result .pdf661
Question 28-40 : What is the objective of the investigation of an accident or incident according to icao annex 13 aircraft accident and incident investigation ?
To prevent accidents and incidents
Icao annex 13.objective of the investigation.3 1 the sole objective of the investigation of an accident or incident shall be the prevention of accidents and incidents it is not the purpose of this activity to apportion blame or liability
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