Service difficulty report · Shield · Boeing 7377H4

Difficulty date
August 4, 2021
Submitted
August 23, 2021
Operation
Air carrier
Aircraft
N964WN
Make and model
Boeing 7377H4
Aircraft serial
36965
Aircraft time
32,901 hours, 20,020 cycles
Part
Shield
Condition
Corroded
Location
Bs 497
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 AFT SHIELD AT FWD CARGO BAY BS497 RBL24 WL157. ; / [01] REMOVED CORROSION ON AFT SHIELD AT FWD CARGO BAY BS 497; RBL 24; WL 157; WORK AREA 0.600' L X 0.600' W X 0.010' DEPTH ; NO ALLOWABLE DAMAGE ON SRM; [02] REMOVED CORROSION ON AFT SHIELD AT FWD CARGO BAY BS 497; RBL 24; WL 157; WORK AREA 0.600' L X 0.600' W X 0.010' DEPTH ; NO ALLOWABLE DAMAGE ON SRM ; IT WILL BE REPLACED; [03] REMOVED CORROSION ON AFT SHIELD AT FWD CARGO BAY BS 497; RBL 24; WL 157; WORK AREA 0.600' L X 0.600' W X 0.010' DEPTH ;ORIGINAL THICKNESS 0.032' REMAINING THICKNESS 0.022'; USING DIAL DEPTH GAUGE ID# NCX000697; S/N UNKNOWN ; DUE 07/2022; NO ALLOWABLE DAMAGE ON SRM ; IT WILL BE REPLACED; [04] VERIFIED; [05] VERIFIED REMOVED CORROSION ON AFT SHIELD AT FWD CARGO BAY BS 497; RBL 24; WL 157; WORK AREA 0.600' L X 0.600' W X 0.010' DEPTH ;ORIGINAL THICKNESS 0.032' REMAINING THICKNESS 0.022'; USING DIAL DEPTH GAUGE ID# NCX000697; S/N UNKNOWN ; DUE 07/2022; NO ALLOWABLE DAMAGE ON SRM ; IT WILL BE REPLACED; [08] REQ. OK TO INSTALL AFT SHIELD AT FWD CARGO BAY BS497 RBL24 WL157; [09] OK TO INSTALL AFT SHIELD AT FCB BS 497; RBL 24; WL 157; [10] INSTALLED F.C.B. AFT SHIELD BS 492.4-BS 500A; RBL 24; WL 157 PER DWG 143A0080; SHT 41 AND SRM 51-40-02.;

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