SDR ASAA2026031965260

Service difficulty report · Floor Support · Boeing 737890

Difficulty date: March 19, 2026
Submitted: April 3, 2026
Operation: Air carrier
Aircraft: N532AS
Make and model: Boeing 737890
Aircraft serial: 36346
Aircraft time: 55,677 hours, 16,882 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 141A5690U1
Condition: Corroded
Location: Zone 200
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

FWD WET AREA FLOOR SUPPORT BS 294.5 - 312, LBL 12, CORRODED ON UPPER FLANGE AT LAV MOUNT. GROUNDED - YES. UPON FURTHER EVALUATION, 100% MATERIAL LOSS, FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED THE FLOOR SUPPORT IAW SRM 51-40-02-0G-0.