AD/B737/74 - Thrust Reverser Actuator Piston Seal

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B02975 In force Legislative Instrument

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Boeing 737 Series Aeroplanes

 

AD/B737/74 Thrust Reverser Actuator Piston Seal 2/93

DM

Applicability: Boeing 737-300,-400 and -500 series aeroplanes as listed in Boeing Service Bulletin 737-78A1055, dated 2 April 1992.

 

Note: FAA AD 92-24-04 refers.

 

Requirement: Action in accordance with Boeing Service Bulletin 737-78A1055 dated 2 April 1992. Compliance:              By 1 January 1994.

Background:  Analysis by the manufacturer indicates that a potential exists for leakage across the piston seal in the thrust reverser actuator. The actions specified in this AD are intended to prevent uncommanded deployment.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.