What was found
MAIN CABIN FLOOR SUPPORT STRUCTURE IS CRACKED AT STA 540 APPROX LBL2 (MARKED IN RED). GROUNDED - YES. REMOVED AND RELACED MAIN CABIN FLOOR SUPPORT STRUCTURE AT STA 540 IAW B737-900ER SRM 51-40-02 & IAW REF'S AIPC 53-42-11
- Difficulty date
- February 14, 2024
- Submitted
- March 6, 2024
- Operation
- Air carrier
- Aircraft
- N403AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41730
- Aircraft time
- 42,009 hours, 13,349 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Floor Support
- Part number
- 143A524063
- Condition
- Cracked
- Location
- Bs 540 Lbl 2
- 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.