Service difficulty report · Shield · Boeing 7377H4

Difficulty date
May 20, 2021
Submitted
June 28, 2021
Operation
Air carrier
Aircraft
N207WN
Make and model
Boeing 7377H4
Aircraft serial
34012
Aircraft time
52,378 hours, 31,227 cycles
Part
Shield
Condition
Corroded
Location
Bs 500 Rbl 24.5
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 FCB AFT SHIELD RBL24.5; BS500+2.5'; WL157 ; / [01] EVALUATED FCB AFT SHIELD RBL 24.5; BS 500+2.5''; WL 157; AND NO FOUND ALLOWABLE DAMAGE ON SRM 53-30-15-1A-1; PART CALLED REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0 PART 9C; L=0.657'' X W=0.543'' X D=0.011''; TOOL USED CALIPER P/N 505-675(ISOOO887) S/N 05946723; DEPTH GAUGE P/N 643JZ(ATS401); [02] REMOVED FCB AFT SHIELD RBL 24.5; BS 480+12 TO BS 500A WL 157 IAW SRM 51-40-02-0G-0; [03] VERIFIED EVALUATION OF FCB AFT SHIELD RBL 24.5; BS 500+2.5''; WL 157; AND FOUND NO ALLOWABLE DAMAGE ON SRM 53-30-15-1A-1; PART IS REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0 PART 9C; L=0.657'' X W=0.543'' X D=0.011''; TOOL USED CALIPER P/N 505-675(ISOOO887) S/N 05946723; DEPTH GAUGE P/N 643JZ(ATS401); [04] LOCATED AND DRILLED NEW SHIELD P/N 143A8126-31 IAW SRM 51-40-05-0G-0 AND DRAWING # 143A8126; [05] SHIELD REPLACEMENT IS ACCOMPLISHED ON TASK CARD TC# TTG8Q0054EKT; [06] SHIELD REPLACEMENT TO BE ACCOMPLISHED ON TASK CARD TC# TTG8Q0054EKT; [07] VERIFIED STEPS 4 AND 6

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