Airworthiness Bulletins

An Airworthiness Bulletin (AB) is an advisory document that alerts, educates and makes recommendations about airworthiness matters. Recommendations in these bulletins are not mandatory.

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00-016
1
- Acceptance of Foreign Supplemental Type Certificates (STCs)

CASR 21.114 Foreign STCs states: A certificate (however described) for an aircraft, aircraft engine or propeller that is issued by or for the NAA of a recognised country and is equivalent to a STC that could have been issued by CASA (a foreign STC)…

Airworthiness Bulletins 00 - Documents and manuals

02-050
1
- Agricultural Aircraft Fatigue Lives

To highlight to agricultural aircraft operators the importance of ensuring the fatigue lives of any lifed aeronautical product or the aircraft is correctly calculated and recorded.

Airworthiness Bulletins 02 - Maintenance general

27-016
1
- Aileron Control Column Chains

To clarify the items that form the aileron control cable system and the associated Instructions for Continuing Airworthiness (ICA)

Airworthiness Bulletins 27 - Flight controls 27 - Flight controls and indicating

80-001
1
- Air Turbine Starters

Failure of Ground Power Unit (GPU) and APU thermocouples can cause failures of Air Turbine Starter drive shafts.

Airworthiness Bulletins 80 - Engine starting

24-002
2
- Aircraft Alternators and Generators

The purpose of this bulletin is to highlight to aircraft owners and maintainers, common issues encountered with alternators and starter/generators.

Airworthiness Bulletins 24 - Electrical power

27-012
1
- Aircraft Control Cable Systems

To alert maintenance personnel and operators to be vigilant whenever installing or adjusting any aircraft control system using the classic two cables in tension, closed–loop cable design, including primary flight control systems.

Airworthiness Bulletins 27 - Flight controls 27 - Flight controls and indicating

51-001
1
- Aircraft Fabric Coverings

This purpose of this AWB is to outline and define the airworthiness requirements for fabric coverings used as alternate approved materials and processes.

Airworthiness Bulletins 51 - Structures

28-003
1
- Aircraft Fuel

This AWB provides a summary of regulations related to aviation fuel and provides answers to many frequently asked questions (FAQ)

Airworthiness Bulletins 28 - Fuel systems

24-008
1
- Aircraft Lead Acid Main Battery Failures

CASA continues to receive reports describing serious safety issues including battery terminal separation, fire and explosion originating from the main battery and battery compartment or battery “box”.

Airworthiness Bulletins 24 - Electrical power

85-004
1
- Aircraft Piston Engine Calendar Time Overhaul

This AWB provides guidelines for procedures to be followed to ensure continued airworthiness of the engines that have exceeded the calendar time overhaul limits specified by the manufacturer. These guidelines are in addition to the recommendations by…

Airworthiness Bulletins 85 - Reciprocating engine

25-005
3
- Aircraft Seat Belts

Alert all operators and maintainers of aircraft with passenger seats equipped with “D-ring” type seat belt anchor fittings that passenger seat belts with hook ends and spring-loaded keepers have the potential to inadvertently release from the…

Airworthiness Bulletins 25 - Equipment and furnishings

25-001
1
- Aircraft Seats

The objective of this bulletin is to highlight to the maintainers, flight crew and operators the importance of meticulous inspection and maintenance of seats and seat adjustment mechanisms to prevent inadvertent operation of the seat, particularly…

Airworthiness Bulletins 25 - Equipment and furnishings

51-008
2
- Aircraft Tubular Structures - Inspection

To provide information to aircraft engineers and operators regarding detecting internal corrosion and fatigue cracking failures in typical aircraft tubular structures during periodic inspections.

Airworthiness Bulletins 51 - Structures

02-019
2
- Aircraft Washing

This Airworthiness Bulletin sets out to provide general guidance and warnings on the subject of aircraft washing and cleaning and also serves as a reminder that any work carried out on an aircraft, including washing and cleaning, is required to be in…

Airworthiness Bulletins 02 - Maintenance general

00-001
3
- Airworthiness Bulletins

An Airworthiness Bulletin (AWB) is issued to inform the aviation public, in a systematic way, of essential information not considered mandatory. The information contained in an AWB is for information only, and issued by CASA to disseminate…

Airworthiness Bulletins 00 - Documents and manuals

01-002
1
- Alemite Corporation Grease Fitting P/N 1992B1

The purpose of this Bulletin is to advise all aircraft owners, operators, maintenance organisations, manufacturers and parts distributors regarding the production and sale of non-conforming grease fittings.

Airworthiness Bulletins 01 - Suspected unapproved parts - notifications

62-006
1
- Alert - R22 Main Rotor Blade Cracking

The purpose of the AWB is to inform operators of a significant Main Rotor blade cracking event recently reported on an R22 Beta II helicopter fitted with A016-6 main rotor blades. This AWB is also published to gather more information on the extent of…

Airworthiness Bulletins 62 - Main rotor
Online version available at: https://www.casa.gov.au//search-centre/airworthiness-bulletins
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