- Difficulty date
- October 7, 2020
- Submitted
- October 20, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737790
- Aircraft serial
- 29751
- Aircraft time
- 65,736 hours, 32,227 cycles
- Part
- Channel
- Part number
- 654A00041073
- Condition
- Corroded
- Location
- Bs 277-351
- 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
L1 MOP SILL HAS CORROSION AT STA 344 & STA 312. GROUNDED-YES. REMOVED CORROSION & CHECKED LIMITS FOUND TO BE OUT OF LIMITS, IAW B737-700 SRM 53-10-15-1A-1 FIG 108 DETAIL D. REMOVED & REPLACED L1 MOP SILL (CHORD), IAW B737-700 SRM 51-40-05-0G-0 FIG 2 & B737-700 SRM 51-40-02-0G-0 PARA 4 & 7W-2.0 O-.090 R-.079 L-3.0 D-.011.