Service difficulty report · Floor Support · Boeing 737990ER

Difficulty date
January 5, 2024
Submitted
January 26, 2024
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990ER
Aircraft serial
41731
Aircraft time
41,970 hours, 13,088 cycles
Part
Floor Support
Part number
141A5410147
Part serial
NSN
Condition
Cracked
Location
Bs 344-360 Bl0
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

INTERCOSTAL BETWEEN FLOOR BEAM STA 344 AND 360 BL 0 HAS CRACK. GROUNDED - YES. REMOVED AND REPLACED INTERCOSTAL AT STA 344-360 IAW B737-900ER SRM 51-40-02 AND IAW BAC DWG 141A5400 REV:-