Commonwealth legislation

AD/B737/85 - Fuel Actuator Shutoff Valve

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

This airworthiness directive mandates that operators of Boeing 737s fitted with J.C. Carter actuator P/N 40574‑2 in the listed fuel valve assemblies must perform the maintenance actions in J.C. Carter Service Bulletin 61163‑28‑08 to remedy clutch slippage observed below −20°C. The work must be completed by 31 May 1997; affected operators or their maintainers bear the cost and schedule the required downtime to comply.

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AD/B737/85 - Fuel Actuator Shutoff Valve

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Boeing 737 Series Aeroplanes

AD/B737/85 Fuel Actuator Shutoff Valve 6/95

Applicability: All model 737 series aircraft fitted with J.C. Carter actuator P/N 40574-2 used in any of the following J.C. Carter fuel system valves.

J.C Carter P/N	Boeing P/N
6563	10-60529-1
60128	10-60529-5
61163	10-60529-8
61183	10-60529-10
61185	10-60529-11

Note: The above valve assemblies are used on the 737 fuel shutoff and crossfeed positions.

Requirement: Action in accordance with J.C. Carter SB 61163-28-08. Compliance: By 31 May 1997.

Background: The valve manufacturer has advised that while functional testing a Boeing 737 gate valve, when the valve was selected to either the “open” or “close” position the actuator suffered a clutch slippage problem whenever the temperature dropped below minus twenty degrees C (minus five degrees F).

Source text

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

1 AD/B737/85 - Fuel Actuator Shutoff Valve