Service difficulty report · Nut Plate · Boeing 7377H4

Difficulty date
April 21, 2024
Submitted
May 31, 2024
Operation
Air carrier
Aircraft
N470WN
Make and model
Boeing 7377H4
Aircraft serial
33860
Aircraft time
66,313 hours, 39,674 cycles
Part
Nut Plate
Part number
UNKNOWN
Condition
Cracked
Location
Lt Wing Le
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

CRACK INTERNAL CAVITY LEADING EDGE ON RAIL NUTPLATE LOCATED OFSS632 AT LT WING 2024-270037<[01] REPLACED INTERNAL CAVITY LEADING EDGE RAIL NUTPLATE LOCATED OFSS632 AT LT WING . IAW B737-700 SRM 51-40-02; DWG: 112A4402 SHEET: 14 REV:- AND IAW B737-700 SRM 51-10-02 STEP 9 ITEMS A.;[02] CORRECT STEP 1: REPLACED INTERNAL CAVITY LEADING EDGE RAIL NUTPLATE LOCATED OFSS632 AT LT WING . IAW B737-700 SRM 51-40-02; DWG: 112A4402 SHEET: 14 REV:- AND IAW B737-700 SRM 51-10-02 STEP 9 ITEMS A. MEASURE OF CRACK L:0.445' TOOL USED DIGITAL CALIPER P/N: 500-197-30<BR>DUE DATE 21-NOV-2024;[03] CORRECT STEP 2: REPLACED INTERNAL CAVITY LEADING EDGE RAIL NUTPLATE LOCATED OFSS632 AT LT WING . IAW B737-700 SRM 51-40-02; DWG: 112A4402 SHEET: 14 REV:- AND IAW B737-700 SRM 51-10-02 STEP 9 ITEMS A. MEASURE OF CRACK L:0.445' TOOL USED DIGITAL CALIPER P/N: 500-197-30<BR>DUE DATE 21-NOV-24;[04] REPLACED INTERNAL CAVITY LEADING EDGE RAIL NUTPLATE LOCATED OFSS632 AT LT WING . IAW B737-700 SRM 51-40-02; DWG: 112A4402 SHEET: 14 REV:- AND IAW B737-700 SRM 51-10-02 STEP 9 ITEMS A. MEASURE OF CRACK L:0.445' TOOL USED DIGITAL CALIPER P/N: 500-197-30<BR>DUE DATE 21-NOV-24

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