Service difficulty report · Module · Boeing 777222

Difficulty date
August 30, 2011
Submitted
September 22, 2011
Operation
Air carrier
Aircraft
N778UA
Make and model
Boeing 777222
Aircraft serial
26940
Aircraft time
62,252 hours, 11,106 cycles
Engine
Pwa PW4077
Part
Module
Part number
160300102
Part serial
28
Condition
Faulty
Location
Stabilizer
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

FLIGHT CONTROL SYS ANY CONDITION OF THE FLIGHT CONTROL SYSTEM OR IT'S SYSTEM INTERFACES WHICH WOULD PREVENT DISPATCH. FLIGHT CONTROLS SYSTEM BELOW MINIMUM DISPATCH REQUIREMENTS. STATUS MSG-2710003 ACTIVE CL HARD MSG-2710003 ACTIVE CL HARD. ACP'D REPLACED RIGHT STCM. REF CMC1 "FLIGHT CONTROL SYS" STATUS MSG. MAINT MSG 27-10003. RIGHT STAB TRIM RATE TEST FAILS IN THE NOSE DOWN DIRECTION. RATE = 2.9 DEG PER SECOND USING RT ENG HYD PUMP. OK NOSE UP. ACCOMPLISHED REMOVAL OF RIGHT STCM MODULE. ACP'D REPLACEMENT OF THE RIGHT STCM. SYSTEM TESTS NORMAL, NO LEAKS.