Service difficulty report · Floorbeam · Boeing 737990ER

Difficulty date
October 12, 2024
Submitted
November 1, 2024
Operation
Air carrier
Aircraft
N440AS
Make and model
Boeing 737990ER
Aircraft serial
41705
Aircraft time
40,049 hours, 12,545 cycles
Part
Floorbeam
Part number
141A550226
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

FLOOR BEAM AT STA 294.5 HAS CORROSION AT BL0. GROUNDED - YES. REMOVED CORROSION AT STA 294 BL-0 FLOOR BEAM AND FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-10-51-1A-1. REPAIRED FLOOR BEAM AT STA 294 BL-0 IAW B737-900 SRM 53-10-51-2R-14W .090" O .094" R .072" L .5" D .022".