Service difficulty report · Controller · Boeing 777222

Difficulty date
December 21, 2010
Submitted
December 22, 2010
Operation
Air carrier
Aircraft
N224UA
Make and model
Boeing 777222
Aircraft serial
30225
Aircraft time
36,586 hours, 4,479 cycles
Engine
Pwa PW4090
Part
Controller
Condition
Faulted
Location
Flap Slats
Stage of operation
NR
How discovered
9
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

FLAP-SLAT CONTROL 2 HIGH LIFT CONTROL LANE NR2 HAS A FAULT. FAULT MSG 27-20412. MAINTENANCE VERIFIED ALTN FLAPS OPERATE NORMALLY PER MEL 2703A. WORKING WITH FIM 27-52 TASK 804 PG213, FOUND RESISTANCE BETWEEN PINS 4 AND 14 READING 146.5 OHMS INSTEAD OF 56.5 PLUS OR MINUS 5 OHMS. BACKUP RINGS AND SEALANT NO STOCK IAD. REPLACED RETRACT SOLENOID. TESTED FLAP PRIMARY CONTROL VALVE, CHECKED GOOD.