SDR SWAA2021080289656

Service difficulty report · Stringer · Boeing 7377H4

Difficulty date: June 30, 2021
Submitted: August 2, 2021
Operation: Air carrier
Aircraft: N419WN
Make and model: Boeing 7377H4
Aircraft serial: 29824
Aircraft time: 64,912 hours, 38,308 cycles
System (JASC): 5313 · Fuselage Main, Longeron/Stringer
Part: Stringer
Condition: Cracked
Location: Bs 540 S27l
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 27L LOCATED BS 540 FWD CARGO COMPARTMENT ; 2021-295486 / REPAIRED STRINGER 27L LOCATED BTW 500D + 10 TO BS 540 FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 AND DWG 143A1215 SHEET 2 REV. D. THIS REPAIR IS CAT A NOT FURTHER ACTION OR INSPECTION REQUIRED. MATERIALS USED ALUMINUM SHEET 7075-0.056 P.O. 2021 127971; ALUMINUM SHEET CLAD 7075T0-0.063 P.O. 2021 129486; EXTRUSION BAC1493-574 P.O. 2020 189950; EXTRUSION BAC1493-248 2020 163847

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