Service difficulty report · Floor Support · Boeing 737990ER

Difficulty date
November 25, 2024
Submitted
January 8, 2025
Operation
Air carrier
Aircraft
N433AS
Make and model
Boeing 737990ER
Aircraft serial
41704
Aircraft time
39,644 hours, 12,471 cycles
Part
Floor Support
Part number
141A56901
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

LEFT SIDE STA 294.5 FLOOR SUPPORT STRUCTURE HAS CORROSION AREAS MARKED W/RED STREAMERS ATTACHED GROUNDED - YES. REOMVED CORROSION AS REQUIRED, ORIG THICKNESS IS .195", REMOVED .088", REMAINING .107", FOUND OUT OF LIMITS IAW B737-900 SRM 53-10-51. REMOVED AND REPLACED FLOOR SUPPORT IAW B737-900 SRM 51-40-02 AND BOEING DWG 141A5600 REV-.