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 420
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 FWD SHIELD RBL23; BS420+17.3'; WL157 ; / [01] EVALUATED FCB FWD SHIELD RBL 23; BS 420+17.3; 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=0.507'' X W=0.135'' X D=0.009''; TOOL USED CALIPER P/N 505-675(ISOOO887) S/N 05946723; DEPTH GAUGE P/N 643JZ(ATS401); [02] REMOVED FCB FWD SHIELD RBL 23; BS 420 TO BS 440 WL 157 IAW SRM 51-40-02-0G-0; [03] VERIFIED EVALUATION OF FCB FWD SHIELD RBL 23; BS 420+17.3; 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=0.507'' X W=0.135'' X D=0.009''; TOOL USED CALIPER P/N 505-675(ISOOO887) S/N 05946723; DEPTH GAUGE P/N 643JZ(ATS401); [04] LOCATED AND DRILLED FCB FWD SHIELD RBL 23; BS 420+17.3; WL 157; IAW SRM 51-40-05 AND BOEING DWG 143A8126 REV A. OK TO PAINT; [05] VERIFIED FCB FWD SHIELD RBL 23; BS 420+17.3; WL 157 IS LOCATED AND DRILLED IAW SRM 51-40-05 AND BOEING DWG 143A8126 REV A; [06] OK TO INSTALL FCB FWD SHIELD; [07] OK TO INSTALL FCB FWD SHIELD; [08] INSTALLED FCB FWD SHIELD FROM BS 420 TO BS 440; WL 157; P/N 143A8126-21 IAW SRM 51-40-02-0G-0 AND BOEING DWG 143A0080; [09] VERIFIED INSTALLATION FCB FWD SHIELD FROM BS 420 - BS 440; RBL 23 WL 157; IAW SRM 51-40-02-0G-0 AND BOEING DWG 143A0080; [10] VERIFIED ALL WORK AND INSPECTION COMPLETE; INCLUDING PRIMER/FINISH; NO FAULTS RAISED

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