Service difficulty report · Support · Boeing 7377H4

Difficulty date
March 31, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N475WN
Make and model
Boeing 7377H4
Aircraft serial
32474
Aircraft time
59,744 hours, 35,276 cycles
Part
Support
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 ON FLOOR SUPPORT AT AFT WET AREA BS947+13 LBL41 WL208. / [01] REMOVED CORROSION FROM SUPPORT AT BS 947+13 LBL41 MAX MAT. LOSS OF .025 FOUND TO BE OUT OF LIMITS USING TOOL ID # ATS1225 S/N UNK. CAL DATE 07/2021 DUE 07/2022 IAW SERM CH 53-70-51-1A-1.;[02] LOCATED AND DRILLED NEW SUPPORT FOR LBL41 BS947-967 IAW SRM CH 51-40-05 OK TO INSTALL.;[03] VERIFIED CORRECTIVE ACTION #1; 2;[04] INSTALLED SUPPORT AT BS 947- 927 LBL41 WL 208 IAW SRM CH 53-40-02 AND DRAWING #140A9870 SHT 11.;[05] VERIFIED CORRECTIVE ACTION #4;[06] VERIFIED CORRECTIVE ACTION #4

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