Service difficulty report · Floor Panel · Boeing 737790

Difficulty date
September 14, 2017
Submitted
February 2, 2022
Operation
Air carrier
Aircraft
N557WN
Make and model
Boeing 737790
Aircraft serial
30166
Aircraft time
55,212 hours, 25,579 cycles
Part
Floor Panel
Condition
Corroded
Location
Fuselage
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*** FLOOR PANEL 120AF HAS CORROSION / EVALUATION FOUND FLOOR PNL # 120AF OUT OF LIMITS PER SRM 53-00-53-1A-1; ITEM 5.A.(1)(B). FABRICATED NEW PANEL #120AF MATERIAL I.D. 0.71 2024T-3 LOT# 1283496; DRILLED; COUNTERSINK & ALODINE PER DRWING 453A1610. DRILL / HOLES PER SRM 51-40-05-0G-0; COUNT / SINK PER SRM 51-40-08-0G-0; ALODINED PER BAC5619 CLASS B; AMM 51-21-41-37-801; APPLICATION. 1035C 19SEP17. 385INSP 09/19/17 PRIMED FLOOR PANEL # 120AF PER AMM 51-21-72-370-804. 88641U 19SEP17 1035C 19SEP17