Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
March 23, 2021
Submitted
May 3, 2021
Operation
Air carrier
Aircraft
N408WN
Make and model
Boeing 7377H4
Aircraft serial
27895
Aircraft time
66,599 hours, 39,435 cycles
Part
Stringer
Condition
Corroded
Location
Bs 540 S26l
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

CORROSION STRINGER 26L LOCATED BS540 AND WBL 156 AT FWD CARGO COMPARTMENT / PERFORMED PERMANENT REPAIR STRINGER 26L LOC BTW 500D T10 TO BS 540 AND WBL 156 AT FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 AND MATERIAL USED:ALUMINIUM SHEET 7075-T0 '0.045' (STRINGER SECTION) AND 7075-T0 '0.050' (CHANNEL (1 EA); ANGLE (2EA) AND APPLIED HEAT TREATMENT AND CONVERTED FROM 7075-T0 TO CONDITION T6 IAW BAC5602

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