What is an ATC instruction?

An ATC clearance or an instruction constitutes authority for an aircraft to proceed only in so far as known air traffic is concerned and is based solely on the need to safely expedite and separate air traffic.

Is it allowed to disobey ATC instructions in which cases?

4 Answers. In case of emergencies, yes. The pilot in command has the final authority and responsibility for safety of the flight and can disobey ATC commands in case of emergencies.

What is a non precision approach?

A non-precision approach is an instrument approach and landing which utilises lateral guidance but does not utilise vertical guidance. ( ICAO Annex 6)

What happens if you disobey ATC?

Consequences. Taking off without ATC clearance may lead to: Runway Incursion – The aircraft may have been cleared only to the runway holding point. Also, at relatively complex aerodromes, taking off may mean crossing other runways.

When can a pilot deviate from ATC instruction?

§ 91.123 Compliance with ATC clearances and instructions. (a) When an ATC clearance has been obtained, no pilot in command may deviate from that clearance unless an amended clearance is obtained, an emergency exists, or the deviation is in response to a traffic alert and collision avoidance system resolution advisory.

What are the different types of RNAV approaches?

Area Navigation RNAV approaches vary on capabilities. For example: LNAV (lateral navigation); LNAV +V (lateral navigation with advisory glide slope); LNAV/VNAV (lateral/vertical navigation). Some RNAV approaches will also have LPV (localizer performance with vertical guidance) known as APV approaches.

What happens possible pilot deviation?

Pilot deviations can occur in several different ways. Airborne deviations can result when pilots stray from an assigned, heading, altitude, or instrument procedure, or if they penetrate controlled or restricted airspace without ATC clearance. To avoid pilot deviations, follow these steps.

What are the consequences of pilot deviation?

Finally, there are pilot deviations that most likely will result in a suspension or immediate revocation of the pilot’s certificate, such as if you bust a temporary flight restriction (TFR), purposely fly recklessly or carelessly, or are caught flying under the influence of alcohol or drugs.

What happens when a pilot is uncertain of an ATC clearance?

When a pilot is uncertain of an ATC clearance, that pilot shall immediately request clarification from ATC. (b) Except in an emergency, no person may operate an aircraft contrary to an ATC instruction in an area in which air traffic control is exercised.

Do pilots have the right to break the ATC rule?

A pilot can break any rule in the book for the safety of the flight or those on the ground. Ultimately the safety of the flight rests with the pilot in command of the aircraft and therefore not just the right but the duty to diverge from ATC instructions if the situation warrants.

Can a pilot disobey ATC commands in case of emergencies?

In case of emergencies, yes. The pilot in command has the final authority and responsibility for safety of the flight and can disobey ATC commands in case of emergencies. The reasons for that and the results will decide the consequences.

Do pilots have to report deviation to ATC?

Obviously, it would be prudent for the the pilot (and required under FAR 91.123 (c), as @Pondlife points out) to report the deviation to the ATC as soon as possible. A pilot can break any rule in the book for the safety of the flight or those on the ground.