Service difficulty report · Stiffener · Boeing 7572B7

Difficulty date
March 27, 2008
Submitted
March 28, 2008
Operation
Air carrier
Aircraft
N906FD
Make and model
Boeing 7572B7
Aircraft serial
27148
Aircraft time
46,574 hours, 19,051 cycles
Part
Stiffener
Part number
149N75232
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
9
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

RIGHT MLG WHEEL WELL, STIFFENER FOR FAIRING STRUCTURE BETWEEN STA 1128-1146, RBL 75 IS CORRODED. AFTER CORROSION REMOVAL FOUND STIFFENER TO BE OUT OF SRM 53-00-71, FIG 101, DETAIL VII LIMITS. ORIGINAL MATERIAL THICKNESS .050", AFTER CORROSION REMOVAL .036 INCH. REMOVED STIFFENER IAW SRM 51-40-02. FABRICATED REPLACEMENT STIFFENER ON MAE TRAVELER NR T8/729363 FROM 7075 - O .050", HEAT TREATED TO T6 IAW SRM 53-40-71. INSTALLED REPLACEMENT STIFFENER IAW SRM 51-40-05 AND 51-40-02.

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