Service difficulty report · Floorbeam · Boeing 737890

Difficulty date
September 13, 2026
Submitted
October 15, 2026
Operation
Air carrier
Aircraft
N564AS
Make and model
Boeing 737890
Aircraft serial
35103
Aircraft time
71,758 hours, 21,866 cycles
Part
Floorbeam
Part number
147A550611
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

AFT WET AREA BS 986 FLOORBEAM CORRODED BETWEEN LBL 43 - RBL 43. GROUNDED - YES. 5EA SPOTS OF CORROSION FOUND ON FLOORBEAM TOP SURFACE BETWEEN RBL 43 & LBL 43. REMOVED CORROSION & FOUND IN LIMITS AT RBL 43, RBL 29, RBL 14.5, LBL 12 IAW SRM 53-70-51-1A-1, STEP 4H. CORROSION AT LBL 43 FOUND OUT OF LIMITS, REPAIRED FLOORBEAM LBL 43 IAW SRM 53-70-51-2R-6, STEP 4.