SDR UALA2012021700967

Service difficulty report · Heat Shield · Boeing 777222

Difficulty date: February 7, 2012
Submitted: March 12, 2012
Operation: Air carrier
Aircraft: N774UA
Make and model: Boeing 777222
Aircraft serial: 26936
Aircraft time: 65,303 hours, 12,403 cycles
Engine: Pwa PW4077
System (JASC): 5412 · Nacelle/Pylon, Bulkhead/Firewall
Part: Heat Shield
Condition: Worn
Location: Nr 1 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 1 ENGINE, NR 1, 2, 3, 4, 5 HEAT SHIELDS ARE BAD. PER MM HEAT SHIELDS 2, 3, 4, 5 ARE WORN BEYOND .005 LIMITS ON NR 1 NACELLE. REPLACED NR 2, 3, 4, 5 HEAT SHIELDS. NEW HEAT SHIELDS HAVE BEEN INSTALLED BULB SEAL ON NR 1 HEAT SHIELD ON NR 1 NACELLE IS BADLY DETERIORATED. BULB SEAL HAS BEEN REPLACED.