Service difficulty report · Actuator · Boeing 777222

Difficulty date
January 30, 2013
Submitted
February 14, 2013
Operation
Air carrier
Aircraft
N777UA
Make and model
Boeing 777222
Aircraft serial
26916
Aircraft time
72,227 hours, 12,965 cycles
Engine
Pwa PW4077
Part
Actuator
Part number
B435416
Condition
Leaking
Location
Rt Wing Spoilers
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

RT WING OUTBOARD TRAILING EDGE ACTUATOR SHOWING LEAKAGE SIGNS. NO LEAKAGE STATICALLY WITH HYDRAULICS PRESSURIZED. LEAK SIGNS ON TRANSLATION OF FLAPS 2 DROPS PER MINUTE. CONFIRMED HYDRAULIC SYSTEMS FULL. OK TO CONTINUE FOR 75 HRS REF MM 29-11-00 PG641 TABLE 601. DAILY CHECK TO BE ACCOMPLISHED. FOUND NR 13 SPOILER ACTUATOR LEAKING DURING ACTUATION. REPLACED ACTUATOR PER MM. OPS CK GOOD. NO LEAKS.