Service difficulty report · Support · Boeing 7378H4

Difficulty date
October 2, 2025
Submitted
November 5, 2025
Operation
Air carrier
Aircraft
N8620H
Make and model
Boeing 7378H4
Aircraft serial
42526
Aircraft time
39,975 hours, 19,262 cycles
Part
Support
Condition
Corroded
Location
Zone 100
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 LOWER SILL LOCATED BTW BS 794.3 TO BS 847 RBL 22 WL 156.1. REMOVED AND REPLACED LOWER SILL AND FASTENERS LOCATED BTW BSTA 794.3 TO BSTA 847. RBL 22 AND WL 156.1. AT AFT CARGO COMPARTMENT. IAW SRM 51-10-02 PARAGRAPH 9. SRM 51-40-02. AND DWG 146A8340. SHEET. 28. REV.-.REPLACED LOWER SILL LOCATED IAW SRM 51-10-02 PARAG 9; SRM 51-40-02 AND DWG 146A8340. SHEET 28 REV -.

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