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DGCA Air Regulations · 35 questions

Accidents, Incidents & Security: DGCA Air Regulations Questions and Answers

35 practice questions on Accidents, Incidents & Security with answers and explanations, plus the key concepts and formulas, from the TrueHeading question bank.

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About this topic

Use this page to revise Accidents, Incidents & Security for the DGCA Air Regulations paper. Below are the key ideas first, then 12 practice questions with answers and explanations, picked from the 35 questions in the TrueHeading bank for this topic.

In short: Annex 13 definitions:

Open the full set in the student zone to answer every question, track your accuracy and take timed mock tests.

Key concepts: Accidents, Incidents & Security

5 ideas to know cold.

Accident, serious incident, incident?

Annex 13 definitions:

  • Accident: occurrence in operation with a fatal or serious injury, substantial damage, or the aircraft missing
  • Serious incident: an incident with a high probability of an accident
  • Incident: other occurrence affecting safe operation

Who investigates and how long does it take?

The State of Occurrence is responsible (in India the AAIB).

  • Final report is released within 12 months, or an interim statement on each anniversary
  • Evidence must be preserved; do not move the wreckage except to rescue or protect people
  • Investigation seeks cause, not blame

Flight recorders: how much do they keep?

FDR records at least 25 hours; CVR records the last 2 hours.

  • Both are orange so that they are easy to find
  • Underwater locator beacon at 37.5 kHz

Dangerous goods classes?

Nine UN classes:

  • 1 Explosives · 2 Gases · 3 Flammable liquids
  • 4 Flammable solids · 5 Oxidisers · 6 Toxic and infectious
  • 7 Radioactive · 8 Corrosives · 9 Miscellaneous

What is the difference between an accident and a serious incident?

An accident involves death, serious injury or substantial damage. A serious incident is one whose circumstances indicate that an accident nearly occurred.

  • Annex 13 sets the investigation procedure
  • Final report within 12 months, otherwise an interim statement each anniversary
  • Aim: prevention, not blame

Practice questions: Accidents, Incidents & Security

Tap “Show answer” after you have tried each one.

Q1An "accident" under ICAO Annex 13 occurs between:

  1. pre-flight and post-flight check
  2. the time any person boards the aircraft with the intention of flight until all persons have disembarked
  3. take-off and landing only
  4. engine start and engine stop
Show answer

Answer: B. the time any person boards the aircraft with the intention of flight until all persons have disembarked

During that time a person is fatally or seriously injured, the aircraft is damaged or lost, or missing.

Q2A "serious injury" in Annex 13 includes:

  1. fracture of any bone (except simple fractures of fingers, toes or nose) or injuries requiring hospitalisation for more than 48 hours within 7 days
  2. bruises only
  3. headache
  4. any minor cut
Show answer

Answer: A. fracture of any bone (except simple fractures of fingers, toes or nose) or injuries requiring hospitalisation for more than 48 hours within 7 days

Serious injury is defined in Annex 13 chapter 1.

Q3An "incident" is:

  1. a flight diversion
  2. a delay in departure
  3. an accident with fatalities
  4. an occurrence, other than an accident, associated with the operation of an aircraft which affects or could affect the safety of operation
Show answer

Answer: D. an occurrence, other than an accident, associated with the operation of an aircraft which affects or could affect the safety of operation

A serious incident has circumstances indicating that an accident nearly occurred.

Q4Under Annex 13, the final report should be made public within:

  1. 5 years
  2. 12 months, or an interim statement on each anniversary of the accident
  3. 3 months
  4. 30 days
Show answer

Answer: B. 12 months, or an interim statement on each anniversary of the accident

ICAO preliminary report within 30 days of the accident (to ICAO, for aircraft over 2 250 kg).

Q5A preliminary report of an accident involving an aircraft of over 2 250 kg is sent to ICAO within:

  1. 3 months
  2. 7 days
  3. 12 months
  4. 30 days of the accident
Show answer

Answer: D. 30 days of the accident

Preliminary Report within 30 days unless the Accident/Incident Data Report was sent.

Q6The sole objective of investigation of an accident or incident is:

  1. the prevention of accidents and incidents, not to apportion blame or liability
  2. to claim insurance
  3. to find the culprit
  4. to punish pilots
Show answer

Answer: A. the prevention of accidents and incidents, not to apportion blame or liability

Annex 13: not the purpose to apportion blame or liability.

Q7Aircraft wreckage after an accident should be:

  1. protected and preserved, not moved except to rescue persons, until released by the investigation authority
  2. removed immediately
  3. burned
  4. sold
Show answer

Answer: A. protected and preserved, not moved except to rescue persons, until released by the investigation authority

Preserving evidence is important.

Q8Flight recorders (FDR and CVR) are required to be:

  1. given to the airline only
  2. preserved and handed to the investigator, and not used for non-investigation purposes
  3. disclosed to the media
  4. erased after landing
Show answer

Answer: B. preserved and handed to the investigator, and not used for non-investigation purposes

Annex 13 protects recordings from use other than for investigation.

Q9Which of the following is a serious incident?

  1. a near collision requiring an avoidance manoeuvre to avoid a collision
  2. a delay of 10 minutes
  3. a passenger complaint
  4. a normal go-around
Show answer

Answer: A. a near collision requiring an avoidance manoeuvre to avoid a collision

Annex 13 attachment lists examples of serious incidents.

Q10The primary responsibility for implementation of aviation security measures lies with:

  1. the airline only
  2. ICAO
  3. the pilot
  4. the contracting state
Show answer

Answer: D. the contracting state

Annex 17 requires each state to establish a national civil aviation security programme.

Q11Carriage of weapons on board aircraft by passengers is:

  1. prohibited unless authorised and declared according to rules
  2. allowed in hand baggage
  3. permitted for everyone
  4. allowed in the toilets
Show answer

Answer: A. prohibited unless authorised and declared according to rules

Law-enforcement officers may carry weapons in accordance with state rules.

Q12A "pre-flight security check" of the aircraft is performed:

  1. once a month
  2. only by ATC
  3. by the operator to detect unauthorised items
  4. by the passengers
Show answer

Answer: C. by the operator to detect unauthorised items

Aircraft security search/check is part of the operator's programme.

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