Service difficulty report · Connector · Boeing 757222

Difficulty date
April 4, 2010
Submitted
April 9, 2010
Operation
Air carrier
Aircraft
N503UA
Make and model
Boeing 757222
Aircraft serial
24624
Aircraft time
66,872 hours, 25,131 cycles
Engine
Pwa PW2037
Part
Connector
Condition
Damaged
Location
Unlock Solenoid
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

RT GEAR DOOR OPEN. REPLACED SEQUENCE VALVE, RELEASE ACT, SAFETY VALVE, DOOR ACTUATOR, NO HELP. WILL CONTINUE TO TROUBLESHOOT. ABLE TO GET RT MLG DOOR UNLOCK LIGHT TO ILLUMINATE CONTINUOSLY, THEN DOOR WOULD MOVE CLOSE WITH SWITCH HELD BY DISCONNECTING NLG DOOR ACTUATOR UNLOCK SOLENOID & LT MLG DOOR ACTUATOR UNLOCK. BUT THE DOOR WOULD NOT COMPLETELY LOCK. RT MLG DOOR WOULD ONLY LOCK CLOSED BY CYCLING GEAR HANDLE (UP-OFF-DOWN WITH L-R HYD SYS PRESSURIZED. FOUND NLG DOOR ACTUATOR UNLOCK SOLENOID CONNECTOR D2454 DAMAGED. REPLACED CONNECTOR. FOUND RT MLG POSITION ACTUATOR BYPASSING, CAUSING EXTEND & RETRACT FUSES TO SET. REPLACED RT MLG POSITION ACTUATOR. BLED AND OP CHECKED GOOD. CHECKED VALVE FOR PROPER CONFIGURATION, VALVE IS PROPERLY CONFIGURED. OK FOR SERVICE.