Service difficulty report · Shield · Boeing 7377H4

Difficulty date
June 8, 2023
Submitted
July 17, 2023
Operation
Air carrier
Aircraft
N963WN
Make and model
Boeing 7377H4
Aircraft serial
36676
Aircraft time
38,123 hours, 23,431 cycles
Part
Shield
Part number
UNKNOWN
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 AFT CARGO BAY CUT-OUT FWD SHIELD FROM STA 767+2 TO STA 767+17; RBL 21 TO RBL 23; WL 156.<[01] DAMAGE FOUND AT AFT CARGO BAY FLOOR SUPPORT FWD SHIELD BS 767 TO BS 794; RBL 22; WL 156 FOUND TO BE OUT OF LIMIT DUE TO NO LIMIT STATEMENT ON SRM PARTS WILL BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02-0G-0 PARE.9C;[02] REMOVED ON AFT CARGO CUT OUT FWD SHIELD;IAW SRM 51-40-02.;[03] RECEIVED NEW ON AFT CARGO BAY CUT-OUT FWD SHIELD BS 767 TO BS 793 RBL23 P/N146A8127-12 PO#910166. LOCATED AND DRILLED IAW SRM 51-40-05 AND DWG 146A0081;[04] VERIFIED CORRECTIVE ACTION STEP #3. OK TO CONTINUE;[05] APPLIED TOP-COAT FINISH PAINT BMS10-11 TYPE2 ON NEW SHIELD IAW AMM 51-21-73-370-804;[06] UPDATE ITEM 5: TOP-COAT FINISH PAINT BMS10-11 TYPE2 APPLICATION TIME 15-JUN-2023 03:44 UTC;[07] VERIFIED STEPS #5 AND #6;[08] APPLIED CORROSION INHIBITING COMPOUND ON NEW SHIELD IAW AMM 51-21-91-620-802.<BR>15-JUN-2023 06:07 UTC;[09] VERIFIED STEP # 8;[10] OK TO INSTALL ON ACB FWD SHIELD BS 767 TO BS 793 RBL 21-23 WL 156;[11] VERIFIED CORRECTIVE ACTION 10 OK TO INSTALL;[12] INSTALLED ON AFC FWD SHIELD FROM<BR>BS 767 TO BS 793 RBL 21-23 WL 156 IAW SRM 51-40-02<BR>AND DWG 146A0081.;[13] VERIFIED CORRECTIVE ACTION 12 <BR><BR>VERIFIED MEASUREMENT TABLE

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