Service difficulty report · Shield · Boeing 7377H4

Difficulty date
April 24, 2020
Submitted
August 16, 2021
Operation
Air carrier
Aircraft
N472WN
Make and model
Boeing 7377H4
Aircraft serial
33831
Aircraft time
55,520 hours, 32,985 cycles
Part
Shield
Condition
Corroded
Location
Fwd Cargo
Stage of operation
IN
How discovered
V
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 SHIELD AT FCB BS500 - BS500A RBL23 WL157. / CORROSTION ON AFT SHIELD AT FCB BS500-BS500A RBL23 WL157 FOUND TO BE OUT OF LIMITS DUE TO NO SRM ALLOWABLE DAMAGE. THE STRUCTURAL ITEMS THAT DO NOT HAVE ENTRIES ARE CALLED REPAIRABLE BY REPLACEMENT. IAW SRM 51-10-02 PAR 9C. REMOVED AND REPLACED AFT SHIELD BS492-BS500A RBL23; PN#143A8126-19; PO#744069 IAW SRM 51-40-02 AND IAW DWG#143A0080

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