Commonwealth legislation

AD/B737/79 - Main Rudder Power Control Unit (PCU)

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

This AD mandates that owners/operators of Boeing 737s (production line numbers 1–2453) inspect, test, repair or replace the Main Rudder Power Control Unit per FAA AD 94-01-07 because internal PCU leaks can reduce or prevent rudder control. It affects all operators of the specified aircraft; technical guidance is in Boeing Service Letter 737-SL-27-82-B and Service Bulletin 737-27-1185. Compliance was required by 30 April 1994.

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Current sections

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AD/B737/79 - Main Rudder Power Control Unit (PCU)

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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/B737/79 Main Rudder Power Control Unit (PCU) 5/94

Applicability: Model 737 series, line position 1 through 2453 inclusive.

Requirement: Action in accordance with the technical requirements of FAA AD 94-01-07 Amdt 39- 8789.

Note: Boeing SL 737-SL-27-82-B and SB 737-27-1185 refer.

Compliance: As specified in the requirement document with a revised effective date of 30 April 1994.

Background: Reports of excessive internal leakage in the rudder PCU which could result in reduced controllability of the aircraft have been reported.

Source text

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