What was found
MAIN CABIN UNDER FLOOR STRUCTURE INTERCOSTAL HAS CRACK AT BS321LBL44. GROUNDED - YES. REMOVED AND REPLACED INTERCOSTAL IAW B737-900ER SRM 51-40-02 AND BOEING DWG141A5400 REV -.
- Difficulty date
- March 20, 2020
- Submitted
- March 24, 2020
- Operation
- Air carrier
- Aircraft
- N408AS
- Make and model
- Boeing 737900ER
- Aircraft serial
- 41732
- Aircraft time
- 29,059 hours, 9,335 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Intercostal
- Part number
- 141A541012
- Condition
- Cracked
- Location
- Fuselage
- 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.