- Difficulty date
- August 30, 2025
- Submitted
- September 9, 2025
- Operation
- Air carrier
- Make and model
- Boeing 737790
- Aircraft serial
- 30344
- Aircraft time
- 75,247 hours, 39,997 cycles
- Part
- Stiffener
- Part number
- 111A1301U5
- Condition
- Cracked
- Location
- Zone 100
- Stage of operation
- IN
- How discovered
- V
- 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
VAPOR BARRIER STIFFENER P/N 111A1301-5 CRACKED EDGE TO EDGE NEAR INBD ATTACH HARDWARE. GROUNDED - YES. REMOVED AND INSTALLED NEW VAPOR BARRIER STIFFENER PN: 111A1301U5. BATCH# 0004423293 AT STA 650-STA663 LH MLG LOWER VAPOR BARRIER AT LBL 6.15 IAW B737-700 SRM 51-40-02-06-0 REV 86-10JUL2025.