Commonwealth legislation

AD/B737/18 Amdt 1 - Take-Off Warning

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

3/10 complexity

This amendment requires operators of all Boeing 737s to regularly test the Take-Off Configuration Warning System (TOCWS), the alarm that warns if the airplane isn’t configured correctly for takeoff. Operators may follow the original FAA method (checks every 200 flight hours) or, for aircraft fitted with a specified warning module (P/N 69-78214-1) and after one initial original-method check, use Boeing Service Letter 737-SL-31-034 to inspect every 500 hours. It reduces maintenance burden while keeping a critical safety check in place.

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Direct links to the current provisions in AD/B737/18 Amdt 1 - Take-Off Warning.

AD/B737/18 Amdt 1 - Take-Off Warning

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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 Boeing 737 Series Aeroplanes

AD/B737/18

Amdt 1

Applicability: All model 737 aircraft. Requirement: Either:

Take-Off Warning 6/96

Action in accordance with FAA AD 88-22-09 Amdt 39-6054; or

2. Where a Take-off Configuration Warning System (TOCWS) Aural Warning Module part number 69-78214-1 is installed on the aeroplane, perform an operational and functional check of the TOCWS in accordance with Boeing Service Letter 737-SL-31-034 dated 31 May 1995.

Compliance: For Requirement 1 - This compliance remains unchanged as `Within 200 hours time in service from 9 December 1988 and thereafter at intervals not exceeding 200 hours time in service’.

For Requirement 2 - Effective 23 May 1996, initially within 500 hours time in service from a check in accordance with Requirement 1 and thereafter at intervals not to exceed 500 hours time in service.

Background: A significant number of take-off configuration warning systems were discovered to be inoperative during a one-time inspection of all Boeing 727 aircraft. This amendment introduces an alternate method of compliance, with an extension of the repetitive check period.

Source text

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