SDR UALA2011051602408

Service difficulty report · Actuator · Boeing 777222

Difficulty date: May 15, 2011
Submitted: May 16, 2011
Operation: Air carrier
Aircraft: N211UA
Make and model: Boeing 777222
Aircraft serial: 30217
Aircraft time: 39,281 hours, 8,632 cycles
Engine: Pwa PW4077
System (JASC): 2710 · Aileron Control System
Part: Actuator
Condition: Faulty
Location: Flaperon
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

MSG 27-10302 FAULTING RT INBD FLAPERON ACTUATOR. REPLACED RT INBD FLAPERON ACTUATOR. ACP FIM 27-11 TASK 816, GND TEST 27-PRIMARY FLT CONTROLS, SYSTEM TEST, "RIGHT FLAPERON POSITION" TEST FAILS! SWAPPED ACE UNITS, NO HELP. THIS TEST GENERATED MAINT MSG 27-16039. REF 777 MT27-010R PG 2, AIRCRAFT SHOULD NOT BE DISPATCHED WITH MAINT MSG 27-16039! T-S REF FIM 27-11 TASK 878, ACP'D WIRING C (PA (PARTIAL). REPLACED FLAPERON ACTUATOR AGAIN; FIRST ONE BAD FROM STOCK PER MM. CHECKS GOOD.