SDR P5CA9701186

Service difficulty report · Bulkhead · Boeing 747122

Difficulty date: June 23, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N853FT
Make and model: Boeing 747122
Aircraft serial: 19753
System (JASC): 5412 · Nacelle/Pylon, Bulkhead/Firewall
Part: Bulkhead
Condition: Cracked
Location: Nr 3 Pylon
Stage of operation: IN
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

ON ENGINE CHANGE FIREWALL INSPECTION FOUND 2.5 INCH CRACK ON NACELLE FORWARD TORQUE BULKHEAD, 5 SHEARED FASTENERS ON PYLON LOWER FORWARD WEB, A 1.5 INCH AND 4 INCH CRACKS ON FORWARD LOWER WEB. REPLACED PYLON WITH SERVICABLE PYLON EEPER MAINTENANCE MANUAL 54-10-01 DUE TO TIME REQUIRED TO REPAIR TORQUE BULKHEAD AND WEB. REMOVED STRUT TO BE REPAIRED PER SB 747-54A2069.