Commonwealth legislation

AD/A320/8 Amdt 1 - Angle of Attack Sensors

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

What this is: A safety directive requiring operators of Airbus A320 aircraft to fix a potentially dangerous fault with angle of attack sensors (devices that measure the angle between the wing and the air flowing over it).

What it requires: Airlines and aircraft operators must carry out specific modifications to the aircraft's sensor systems according to two Airbus Service Bulletins (technical instruction documents): SB A320-34-1012 and SB A320-34-1013.

Why it matters: Without this fix, there is a risk that two angle of attack sensors could move into the same position simultaneously. This could trigger an automatic flight control command that forces the aircraft's nose down unexpectedly — a dangerous situation during flight.

Deadlines:

First modification: Within 100 flight hours after 17 May 1990
Second modification: Before 31 August 1991

Key point: This directive upgrades an original temporary fix to a permanent solution, ensuring long-term safety for these aircraft.

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AD/A320/8 Amdt 1 - Angle of Attack Sensors

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Airbus Industrie A319, A320 and A321 Series Aeroplanes

AD/A320/8

Amdt 1

Applicability: All models A320.

Angle of Attack Sensors 10/90

Requirement: 1. Action in accordance with SB A320-34-1012.

Note: DGAC AD 89-198-004 (B) refers.

Action in accordance with SB A320-34-1013. Compliance: 1. Within 100 hours’ time in service from 17 May 1990.
Prior to 31 August 1991.

Background: To prevent a risk of simultaneous positioning of two angle of attack sensors which could lead to a pitch down command.

The original AD was a temporary fix for the problem. This amendment is issued to incorporate the permanent modification.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.