Service difficulty report · Shield · Boeing 7377H4

Difficulty date
July 30, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Shield
Condition
Corroded
Location
Bs 431 Rbl 23
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 FWD SHIELD FWD CARGO BAY BS 431 RBL 23 WL 156 ; / [01] CORROSION FOUND ON FWD SHIELD FWD CARGO BAY BS 431 RBL23 WL156; P/N 143A8126-21; FOUND TO BE OUT OF LIMIT ON SRM PART WILL BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02-0G-0 PAR. 9.C.; [02] VERIFIED CORROSION FOUND ON FWD SHIELD FWD CARGO BAY BS 431 RBL23 WL156; P/N 143A8126-21; FOUND TO BE OUT OF LIMIT ON SRM PART WILL BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02-0G-0 PAR. 9.C.; [03] RECEIVED NEW FLOOR TO SIDEWALL SUPPORT WITH P/N 143A8126U21 LOT 1466561-1 LOCATED AND DRILLED BETWEEN BS 420 - 440 RBL 23 WL 156 I.A.W. SRM 51-40-05-0G-0 DWG 143A7500 DWG# 143A7505; [04] VERIFIED REPLACEMENT PART FOR SHIELD P/N 143A8126-21 DRILLED UP PER DWG 143A0080 AND SRM 51-40-05-0G-0.; [05] 0K TO INSTALL NEW FWD SHIELD AT FWD CARGO BAY FROM BS 420 TO BS 440 RBL 23 WL 156 ITEM# 143A8126U21; [06] CORRECTED MEASUREMENTS SECTION; [07] VERIFIED OK TO INSTALL REPLACEMENT SHIELD; [08] INSTALLED NEW FWD SHIELD AT FWD CARGO BAY FROM BS 420 TO BS 440 RBL 23 WL 156 ITEM# 143A8126U21 IAW SRM 51-40-02-0G-0; DWG#143A0080; [09] UPDATED PARTS INFORMATION; [10] VERIFIED INSTALLED NEW FWD SHIELD AT FWD CARGO BAY FROM BS 420 TO BS 440 RBL 23 WL 156 ITEM# 143A8126U21 IAW SRM 51-40-02-0G-0; DWG#143A0080

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