Service difficulty report · Shield · Boeing 7377H4

Difficulty date
September 10, 2021
Submitted
October 4, 2021
Operation
Air carrier
Aircraft
N225WN
Make and model
Boeing 7377H4
Aircraft serial
34333
Aircraft time
53,839 hours, 31,987 cycles
Part
Shield
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

AFT CARGO FLOOR STRUCTURE R/H SIDE REVEAL AT S-25R BETWEEN STA 767-787 WITH CORROSION ; / [01] REMOVED CORROSION ON AFT CARGO FLOOR STRUCTURE R/H SIDE REVEAL STA 767-787 AS PER B737-700 SRM 51-10-02-0G-0; [02] VERIFIED STEP 1; [03] PERFORMED UT THICKNESS INSP ON REWORKED AREA AFT CARGO FLOOR STRUCTURE R/H SIDE REVEAL STA 767-787 IAW B737 NDT P4 51-00-00 PROC.3 ; MIN THICKNESS NOTED 0.030' <BR>TOOL USED : MX-3 B/C 17049 CALDUE: 15-JUN-22; [04] ORIGINAL MATERIAL .05' MATERIAL LOSS .02' MATERIAL REMAINING .03' FOUND OUT OF LIMITS AS PER B737-700 SRM 25-52-01-201-801.; [05] LOCATED AND DRILLED NEW SHIELD P/N:146A8127U12 AS PER B737-700 SRM 51-40-05-0G-0.; [06] ORIGINAL MATERIAL .05' MATERIAL LOSS .02' MATERIAL REMAINING .03' FOUND OUT OF LIMITS AS PER B737-700 SRM 53-60-15-1A-1 AND SRM 53-60-15-1I-1; [07] REFERENCE TASK CARD TTG8Q004BYMK FOR SHIELD INSTALLATION.; [08] VERIFIED STEPS 4; 5; 6; AND 7

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