Service difficulty report · Shield · Boeing 7378H4

Difficulty date
March 10, 2023
Submitted
April 13, 2023
Operation
Air carrier
Aircraft
N8527Q
Make and model
Boeing 7378H4
Aircraft serial
36946
Aircraft time
20,252 hours, 9,861 cycles
Part
Shield
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 FORWARD CARGO BAY SHIELD BS 500+9 TO 500+13 RBL 24 WL 156<[01] EVALUATED CORROSION ON SHIELD BS 500+9 TO 500+13 RBL 24 WL 156; FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0;[02] VERIFIED CORRECTIVE ACTION #1;[03] REMOVED FCB SHIELD BS 492-500A RBL 24 WL 156 PER SRM 51-40-02-0G-0.;[04] LOCATED; DRILLED; DEBURRED NEW SHIELD BS 492-500A RBL24; WL 156 PER SRM 51-40-05-0G-0 DWG 143A0080. OK TO INSTALL.;[05] VERIFIED MEASUREMENT TABLE.;[06] VERIFIED CORRECTIVE ACTION 4; OK TO INSTALL;[07] INSTALLED NEW SHIELD FCB BS 492-500A RBL 24 WL 156 PER SRM 51-40-02-0G-0; DWG 143A0080.;[08] VERIFIED CORRECTIVE ACTION STEP 7.;[09] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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