- 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
- Cracked
- Location
- Bs 540 S23l
- 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 23L LOCATED BS540 FWD CARGO COMPARTMENT / REPAIRED STRINGER 23L BTW BS500D AND BS540 FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 MATERIAL USED ALUMINUM SHEET 7075-TO/0.040' ANGLE (2EA) AND CHANNEL 7075-TO/0.036' STRINGER SECTION HEAT TREATMENT APPLIED 7075-T6 IAW BAC 5602 PO 2021-189926 AND 2020-214270