SDR AALA202012089012

Service difficulty report · Floorbeam · Boeing 737823

Difficulty date: December 2, 2020
Submitted: December 9, 2020
Operation: Air carrier
Aircraft: N819NN
Make and model: Boeing 737823
Aircraft serial: 31083
Aircraft time: 33,443 hours, 13,552 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Zone 100
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

AIRCRAFT IN BASE MAINTENANCE. CORROSION OF FLOORBEAM AT SCREW HOLE NEAR STA 986 AND RBL 4, MEASURING L=0.575 IN, W=0.575 IN, D=0.15 IN. ACCOMPLISHED PERMANENT REINFORCING DOUBLER REPAIR, IAW SRM 53-70-51-2R-6 AND 51-40-02 AND EA310144.