SDR P5CA0200680

Service difficulty report · Mount · Boeing 747249F

Difficulty date: May 30, 2002
Submitted: June 3, 2002
Operation: Air carrier
Aircraft: N920FT
Make and model: Boeing 747249F
Aircraft serial: 22237
Aircraft time: 70,235 hours, 17,248 cycles
Engine: Pwa JT9D7Q
Engine time: 65,536 hours, 18,266 cycles
System (JASC): 7120 · Engine Mount Section
Part: Mount
Condition: Corroded
Location: Nr 2 Engine
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

LEVEL 1 CORROSION FOUND ON ENG UPPER REAR MOUNT BULKHEAD FITTING LOWER LUGS WHILE REMOVING NR 2 ENG REAR UPPER MOUNT FOR REPAIRS. ACCOMPLISHED SB 747-54A2200. COATED MOUNT W/ BMS 14-4, TYPE 2. COATING IAW 747-A2200 SERMATECH ENGINEERING BULLETIN 249.