Service difficulty report · Floor Support · Boeing 737990ER

Difficulty date
February 19, 2024
Submitted
February 29, 2024
Operation
Air carrier
Aircraft
N403AS
Make and model
Boeing 737990ER
Aircraft serial
41730
Aircraft time
42,009 hours, 13,349 cycles
Part
Floor Support
Part number
147A566021
Part serial
NSN
Condition
Corroded
Location
Bs 947-967
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

MAIN CABIN FLOOR SUPPORTS STA 947-967 LBL 50 CORRODEDPART RACK. GROUNDED - YES. REMOVED CORROSION, MEASURED ORIG THICKNESS 0.150, REMAINING THICKNESS 0.050 OUT OF LIMITS IAW B737-900ER SRM 53-70-51-1A-1. DRILLED TO FIT NEW INTERCOSTAL STA 947-967 LBL 50 IAW BAC DWG 147A5650 REV B B737-900ER SRM 51-50-05 PART INSTALLED ON NON ROUTIN 27940, CUST CARD NO. G1923940.