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 AFT CARGO BAY SHIELD AFT OF CARGO DOOR HAS MULTIPLE AREAS AROUND NUT PLATE HOLES BS847 TO BS867 RBL22 WL163.5<[01] CORROSION ON SHIELD WAS FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS ARE GIVEN IN THE SRM.;[02] VERIFIED CORRECTIVE ACTION ITEM 1.;[03] REMOVED AFT CARGO BAY SHIELD BS 847-867 RBL 22 WL 163.5 PER SRM 51-40-02-0G-0.;[04] LOCATED; DRILLED; DEBURRED NEW SHIELD BS 847-867 RBL 22 WL 163.5 PER SRM 51-40-05-0G-0; DWG 146A0081. OK TO INSTALL.;[05] VERIFIED CORRECTIVE ACTION 4; OK TO INSTALL;[06] VERIFIED MEASUREMENT TABLE.;[07] INSTALLED SHIELD ACB BS 847-867 RBL 22 WL 163.5 PER SRM 51-40-02-0G-0; DWG 146A0081.;[08] VERIFIED CORRECTIVE ACTION STEP 7.;[09] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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