SDR UALA2012012400498

Service difficulty report · Bolt · Boeing 777222

Difficulty date: January 24, 2012
Submitted: February 14, 2012
Operation: Air carrier
Aircraft: N788UA
Make and model: Boeing 777222
Aircraft serial: 26942
Aircraft time: 65,154 hours, 9,310 cycles
Engine: Pwa PW40903
System (JASC): 7250 · Turbine Section
Part: Bolt
Condition: Sheared
Location: Nr 2 Engine
Stage of operation: IN
How discovered: B
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 ENG REF EG6601 HPT HUB BORESCOPE FOR SLIGHT HOC. REMOVED 5 EA BOLTS FROM LOWER AP41 LINE. NEED TO CONT REMOVING 1 EA BOLT AND 4EA NUTS, CLAMP 792 (MIDSPAN, 4EA BOLTS THAT CONNECT AP41 TO TURBINE COOLING VLV. SPRAYED CLAMP BOLTS WITH PENETRANT TO LOOSEN. REMOVED ATTACH HARDWARE BAGGED ON TO ENGINE. REMOVED AP41 LINE FOR ACCESS FOR BORO. NR 2 ENG. REF SMC8 FOR TWO SHEARED BOLTS. REPLACED BRACKET AND INSTALLED ALL LINES AND BRACKETS.