Service difficulty report · Floorbeam · Boeing 737990

Difficulty date
December 1, 2023
Submitted
December 19, 2023
Operation
Air carrier
Aircraft
N319AS
Make and model
Boeing 737990
Aircraft serial
33679
Aircraft time
67,178 hours, 27,133 cycles
Part
Floorbeam
Part number
174A55068
Part serial
NSI
Condition
Corroded
Location
Unknown
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

AFT WET AREA STA 986 FLOOR BEAM EXISTING REPAIR CAP LBL 20 TO LBL 60 IS CORRODED. GROUNDED - YES. DAMAGE FOUND TO BE 100% THROUGH ON EXISTING REPAIR T-CAP REMOVED AND REPLACED REPAIR T-CAP IAW B737-900 SRM 51-40-02-0G-0, 53-70-51-2R-4W=2 O=.150 R=0 L=3 D=.150.