Commonwealth legislation

AD/CESSNA 500/7 - Landing Gear Unlock Actuator and Control System

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 Airworthiness Directive mandates a mandatory safety fix for specific Cessna 500 (Citation) series jet aircraft.

Who is affected: Owners and operators of Cessna 500 models with these serial numbers:

500-0001 through 500-0142
500-0144 through 500-0156
500-0158

What must be done: You must follow the instructions in Cessna Service Bulletin SB 32-17, which deals with the landing gear unlock actuator and control system. This typically means inspecting, repairing, or replacing parts of the landing gear mechanism to prevent malfunction.

Deadline: Complete the work within 50 hours of flight time after 14 June 1974 or before 31 July 1974 — whichever comes first.

Why it matters: Landing gear failures can be catastrophic. This directive ensures potentially defective actuators are fixed before they can cause the gear to collapse or fail to deploy during landing.

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AD/CESSNA 500/7 - Landing Gear Unlock Actuator and Control System

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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 Cessna 500 (Citation) Series Aeroplanes

AD/CESSNA 500/7 Landing Gear Unlock Actuator

and Control System

7/74

Applicability: All models with S/Nos. 500-0001 to 500-0142 and 500-0144 to 500-0156 and

500-0158.

Document: Cessna citation SB 32-17.

Compliance: Within 50 hours time in service after 14 June 1974 or before 31 July 1974 whichever occurs first.

Source text

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