Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
January 7, 2021
Submitted
May 13, 2021
Operation
Air carrier
Aircraft
N401WN
Make and model
Boeing 7377H4
Aircraft serial
29813
Aircraft time
68,079 hours, 40,102 cycles
Part
Floorbeam
Condition
Corroded
Location
Bs 947
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 FLOOR SUPPORT LOWER SIDE OF AFT FLANGE AT BS 947.5+3; RBL 46- RBL 48; WL 207 / CORROSION ON FLOOR SUPPORT BS947.5+3 RBL46-RBL48; WL207 REMOVED IN A 1' X 1' X .015' ORIGINAL THICKNESS .072' FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-1A-1 REMOVED AND REPLACED FLOOR SUPPORT PER SRM 51-40-02; SRM 51-40-05 AND DWG# 147A5760 REV - 88911U JAN12-21

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