SDR 2001UALA01924

Service difficulty report · Pcu · Boeing 777222

Difficulty date: August 28, 2001
Submitted: September 12, 2001
Operation: Air carrier
Aircraft: N798UA
Make and model: Boeing 777222
Aircraft serial: 26928
Aircraft time: 15,733 hours, 2,487 cycles
Engine: Pwa PW4090
System (JASC): 2760 · Drag Control System
Part: Pcu
Part number: B435407
Part serial: 0565
Condition: Leaking
Location: Spoiler
Part time: 15,733 hours, 2,487 cycles
Stage of operation: NR
How discovered: O
Nature of condition: K
Precautionary procedure: A

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

What was found

ACFT RETURNED TO FIELD DUE TO HYDRAULIC LEAK. FOUND NR 6 SPOILER, LEFT WING SECOND SPOILER FROM FUSELAGE LEAKING. THIS IS PART OF THE RIGHT HYDRAULIC SYSTEM JUST INBOARD OF LEFT PYLON. PANEL 552FB REMOVED AND HARDWARE IS BAGGED. MAINT REPLACED LEAKING NR 6 INBOARD SPOILER PCU. SHOP INSPECTION FOUND FLUID LOSS WAS FROM LOOSE SARD PLUG AN814-8TL ON PCU, REF CMM 27-60-08 ITEM 377. INSPECTION AND CORRECTION OF LOOSE SARD PLUGS IS BEING ACCOMPLISHED PER BOEING SERVICE LETTER 777-SL-27-021 AND MOOG SERVICE BULLETIN B43540-27-04.