Service difficulty report · Nut Plate · Boeing 7377BD

Difficulty date
June 6, 2025
Submitted
July 11, 2025
Operation
Air carrier
Aircraft
N7721E
Make and model
Boeing 7377BD
Aircraft serial
34479
Aircraft time
61,888 hours, 33,237 cycles
Part
Nut Plate
Condition
Cracked
Location
Zone 500
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

CRACK ON RAIL NUTPLATE LOCATED LEADING EDGE INTERNAL CAVITY ON ORSS 483 AT LT WING 2025-363338<[01] REPLACED RAIL NUTPLATE LOCATED LEADING EDGE INTERNAL CAVITY ON ORSS 483 AT LT WING IAW B737-700 SRM 51-10-02 ITEM 9; SRM 51-40-02 AND DWG: 112A4402 SHEET: 13 REV: - .;[02] CORRECTED STEP 1.<BR>REPLACED RAIL NUTPLATE LOCATED LEADING EDGE INTERNAL CAVITY ON ORSS 483 AT LT WING IAW B737-700 SRM 51-10-02 ITEM 9; SRM 51-40-02 AND DWG: 112A4402 SHEET: 13 REV: - .<BR><BR>MEASURE OF CRACK: 0.448' TOOL USED: DIGITAL CALIPER P/N: 500-197-30. S/N: A23217620. DUE DATE: 21-APR-26.;[03] REPLACED RAIL NUTPLATE LOCATED LEADING EDGE INTERNAL CAVITY ON ORSS 483 AT LT WING IAW B737-700 SRM 51-10-02 ITEM 9; SRM 51-40-02 AND DWG: 112A4402 SHEET: 13 REV: - <BR>MEASURE OF CRACK: 0.448' TOOL USED: DIGITAL CALIPER P/N: 500-197-30. S/N: A23217620. DUE DATE: 21-APR-26.

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