SDR UALA2012012400493

Service difficulty report · Seal · Boeing 777222

Difficulty date: January 24, 2012
Submitted: February 24, 2012
Operation: Air carrier
Aircraft: N780UA
Make and model: Boeing 777222
Aircraft serial: 26944
Aircraft time: 63,212 hours, 11,250 cycles
Engine: Pwa PW4077
System (JASC): 5420 · Nacelle/Pylon Miscellaneous Structure
Part: Seal
Condition: Worn
Location: Nr 2 Pylon
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

NR 2 ENGINE PYLON, NR 1 HEAT SHIELD SEGMENT BULB SEAL IS WORN ON FWD END OF SEGMENT. MAINT TEXT: THE COVER GAP STRIP ON NR 1 IS ALSO DAMAGED. REMOVED BULB SEAL AND COVER GAP STRIP FROM NR 1 SHIELD SEGMENT OF NR 2 ENGINE PYLON. ACP HFEC INSP OF HOLES AS NEEDED, NO CRACKS FOUND. REPLACED HEAT BLANKETS ON TOP OF NR 1 SEGMENT OF NR 2 ENGINE PYLON, SEALANT IS DRYING BLANKET IS TEMPORARILY SECURED, STARTED DRILLING GAP SEAL.