Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
December 9, 2020
Submitted
January 13, 2021
Operation
Air carrier
Aircraft
N434WN
Make and model
Boeing 7377H4
Aircraft serial
32454
Aircraft time
60,441 hours, 35,783 cycles
Part
Stringer
Condition
Cracked
Location
Fwd Cargo
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

CRACK STRINGER 26L LOCATED BS 540 FWD CARGO COMPARTMENT. REPAIRED STRINGER 26L LOCATED BS 540 FWD CARGO COMPARTMENT, IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 THIS REPAIR IS CATEGORY A CRACK IS BEYOND THE ALLOWABLE DAMAGE LIMITS. REPAIR PERFORMED FROM BS 500D TO BS 540 MATERIAL USED ALUMINUM SHEETS PN: 7075-T0-0.050 AND 7075-0.045 AND HEAT TREATED AND CONVERTED FROM T0 TO T6.

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