Service difficulty report · Sidewall Support · Boeing 7377CT

Difficulty date
October 13, 2022
Submitted
November 17, 2022
Operation
Air carrier
Aircraft
N569WN
Make and model
Boeing 7377CT
Aircraft serial
33656
Aircraft time
66,340 hours, 34,395 cycles
Part
Sidewall Support
Condition
Corroded
Location
Zn 100 Fus Lower
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 FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT LBL 24 BS 480+14; BS 480+18; BS 500+4; BS 500+10; BS 500+14; BS 500+18; BS 500A+6; BS 500A+10; BS 500A+14; BS 500A+18. / [01] VERIFIED APPLICABILITY FOR ALLOWABLE DAMAGE LIMITS PER SRM 53-00-53-1A-2.;[02] REMOVED CORROSION ON FCB FLOOR TO SIDEWALL SUPPORT AT LBL24;BS500+14;MEASURES:L=.9;W=.8;D=.015';ORIGINAL MATERIAL TICKNESS IS 0.040';REMAINING TICKNESS:0.025';FOUND TO BE OUT LIMITS;IAW SRM 53-00-53-1A-2;PARAG.4A(2)DETAIL D FIG.103 AND SRM 53-30-53-0I-2 IDENTIFICATION 2 TABLE 2.TOOL USED:ATS2677;S/N UNKNOWN;DUE:11/2022.;[03] COMPLETED STES#1-2-3-4-5-6-7-8-9-10.;[04] VERIFIED CORRECTIVE ACTION STEPS 1;2 AND 3.;[05] THIS FAULT WILL BE ACCOMPLISHED ON CARD # TTG8Q00FFLT4;[06] VERIFIED CORRECTIVE ACTIONS STEP 5.;[07] VERIFIED MEASUREMENTS TABLE.;[08] CERTIFY.

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