SDR UPS02439733

Service difficulty report · Forging · Boeing 747SR46

Difficulty date: September 27, 2002
Submitted: October 14, 2002
Operation: Air carrier
Aircraft: N680UP
Make and model: Boeing 747SR46
Aircraft serial: 20923
Aircraft time: 63,455 hours, 32,969 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Forging
Condition: Cracked
Location: Bulkhead
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

INSPECTION TYPE: C CRACK FOUND ON LT BS 1241 BULKHEAD FORGING AT LWR KICK FITTING FASTENER HOLE BY APPROX 0.050" LONG RUNNING AT FWD DIRECTION. LH BS 1241 BULKHEAD KICK FTG ATTACH FORGING LOWER BOLT HOLE REPAIRED AS PER HX RS R-53-43-34916 & UPS EO B747-5310-17698-A. NOTE : L/R BS 1241 FAILSAFE STRAP TO BE INSPECTED PER SB 747-53-2283 'CRACKED STRAP' PROCEDURE EVERY 3000 FLIGHTS. THE SPLICE STRAPS & SOLID FILLERS TO CHANGE WITHIN 2 YEARS.

More about the Boeing 747-SR-46