Service difficulty report · Stiffener · Boeing 747228F

Difficulty date
July 20, 2006
Submitted
July 21, 2006
Operation
Air carrier
Aircraft
N536MC
Make and model
Boeing 747228F
Aircraft serial
21576
Aircraft time
110,199 hours, 21,820 cycles
Part
Stiffener
Part number
BAC15171558
Condition
Cracked
Location
Zone 100
Stage of operation
IN
How discovered
E
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

NOSE WHEEL WELL, LT SIDEWALL STIFFENER BETWEEN FUSELAGE STATION 320 LT AND 340 LT, WL 180, WAS FOUND WITH CRACK DURING HFEC INSPECTION. REMOVED AND REPLACED STIFFENER WITH A NEW STIFFENER EXTRUSION P/N BAC1517-1558 IAW SRM 51-40-04 FIG. 2 AND SRM 51-30-02.