AD/B737/85 - Fuel Actuator Shutoff Valve
1AD/B737/85 - Fuel Actuator Shutoff Valve
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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).