Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
June 27, 2018
Submitted
May 13, 2022
Operation
Air carrier
Aircraft
N777QC
Make and model
Boeing 7377H4
Aircraft serial
30592
Aircraft time
63,466 hours, 37,367 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 328
Stage of operation
IN
How discovered
9
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

CORROSION ON B.S. 328 FLOOR BEAM (UPPER SURFACE) R.B.L. 37; BY FASTENER HOLE. / BS 328 FLOOR BEAM UPPER SURFACE RBL 37. REMOVED CORROSION 1.2' X 1.0' X 0.008'. IAW SRM 51-10-02. ORIGINAL THICKNESS 0.925'; REMAINING THICKNESS 0.117'. FOUND TO BE WITHIN LIMITS IAW SRM 53-10-51-1A-1. UPON INVESTIGATION. CRACK FOND AT FLOOR FLOOR BEAM BS 328 UPPER CHORD RBL 21.5. ACCOMPLISHED; FLOOR BEAM REPAIR UPPER CHORD BETWEEN RB 1.1 AND RBL 60 ON CC# T799656

More about the Boeing 737-7H4