Service difficulty report · Doubler · Boeing 747451

Difficulty date
May 24, 2010
Submitted
May 25, 2010
Operation
Air carrier
Aircraft
N661US
Make and model
Boeing 747451
Aircraft serial
23719
Aircraft time
87,252 hours, 11,640 cycles
Engine
Pwa PW4056
Part
Doubler
Condition
Cracked
Location
Fuselage
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

DURING L-CHECK FOUND CRACK IN LT BS 1265 FRAME INTERCOSTAL DOUBLER CHORD HOLE A. REPLACED INTERCOSTAL DOUBLER IAW SRM 51-10-02 AND DWG 624U0060 AND ERA480444-14AD SECTION I. SECTION II REQUIRES REPETITIVE INSPECTIONS EVERY 1,000 CYCLES UNTIL PERMANENT REPAIR IAW SECTION III.