Service difficulty report · Shield · Boeing 7377H4

Difficulty date
August 26, 2021
Submitted
September 13, 2021
Operation
Air carrier
Aircraft
N966WN
Make and model
Boeing 7377H4
Aircraft serial
36966
Aircraft time
32,714 hours, 19,999 cycles
Part
Shield
Condition
Corroded
Location
Aft Cargo Bay
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 FORWARD BAY SHIELD AT B.S. 494-500A; R.B.L. 24; W.L. 154. ; / [01] NO ALLOWABLE DAMAGE LIMITS IN SRM REPAIR BY REPLACEMENT IAW SRM 51-10-02-0G-0 RECEIVED NEW BAY SHIELD ITEM HFAB53-SHD-011; LOT:1467549-1; PO NUMBER: 835449. LOCATED AND DRILLED; COUNTERSINKED NEW FWD BAY SHIELD IAW SRM 51-40-05 AND DWG 143A8126. OK TO APPLIED PROTECTIVE FINISHED; [04] VERIFIED CORRECTIVE ACTION #3.<BR>OK TO APPLY ENAMEL.; [05] APPLIED CHEMICAL CONVERSION COATING AND PRIMER AND INSTALLED NUTPLATE IAW SRM 51-40-10 AND DWG 143A8126; SRM 51-20-01 AND SOPM 20-41-02. OK TO APPLY WHITE PAINT.; [06] VERIFIED CORRECTIVE ACTION 5. OK TO APPLY ENAMEL.<BR>CORRECTION TO CORRECTIVE ACTION 4: OK TO APPLY CHEMICAL CONVERSION COATING & PRIMER.; [07] APPLIED ENAMEL AT FORWARD BAY SHIELD B.S. 494-500A; R.B.L. 24; IAW SOPM 20-41-02; [08] VERIFIED ITEM 7 CORRECTIVE ACTIONS.; [09] APPLIED CIC AT FORWARD BAY SHIELD AT B.S. 494-500A; R.B.L. 24 IAW SOPM 20-41-05 UPDATED MEASUREMENTS; [12] VERIFIED CORRECTIVE ACTIONS 9 AND 10; OK TO INSTALL; [13] INSTALLED BAY SHIELD AT B.S. 494-500A; R.B.L. 24; W.L. 154 IAW SRM 51-40-02 AND DWG 143A0080 AND 143A8126; [14] INSTALLED BAY SHIELD AT B.S. 494-500A; R.B.L. 24; W.L. 154 IAW SRM 51-40-02 AND DWG 143A0080 ID;0038 REV:- AND 143A8126 ID:0018 REV

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