What was found
BS 727, BL 0, EXTERNAL SKIN AT PRESSURE DRAIN VALVE WAS CORRODED AT RIVETS. REMOVED AND REPLACED PRESSURE DRAIN VALVE DOUBLER BS 727, BL 0, WL 148 IAW SRM 51-40-02, AND DWG 146A3230 REV -.
- Difficulty date
- May 16, 2026
- Submitted
- June 23, 2026
- Operation
- Air carrier
- Aircraft
- N8646B
- Make and model
- Boeing 7378H4
- Aircraft serial
- 36935
- Aircraft time
- 39,772 hours, 19,344 cycles
- System (JASC)
- 5330 · Fuselage Main, Plate/Skin
- Part
- Doubler
- Condition
- Corroded
- 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.