Service difficulty report · Plate · Boeing 7377H4

Difficulty date
September 10, 2023
Submitted
October 17, 2023
Operation
Air carrier
Aircraft
N448WN
Make and model
Boeing 7377H4
Aircraft serial
33721
Aircraft time
64,386 hours, 38,370 cycles
Part
Plate
Part number
UNKNOWN
Condition
Corroded
Location
Zn 300 Stabilize
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 BONDING JUMPER PLATE LOC. UPPER REAR SPAR BETWEEN HINGE 7AND 8 AT VERTICAL STABILIZER 2023-569575<[01] REPLACED BONDING JUMPER PLATE LOC. UPPER REAR SPAR BETWEEN HINGE 7AND 8 AT VERTICAL STABILIZER IAW B737-700 AND SRM 51-10-02 ITEM 9 AND DWG #175A1601 SHEET 18 REV A. SEE INDIVIDUAL SIGNSOFF BELOW.;[02] CORRECTED STEP 1:REPLACED BONDING JUMPER PLATE LOC. UPPER REAR SPAR BETWEEN HINGE 7AND 8 AT VERTICAL STABILIZER IAW B737-700 AND SRM 51-10-02 ITEM 9 AND DWG #175A1601 SHEET 18 REV A; AMM 20-10-37-120-801 AND SWPM 20-20-00; TEST IS OK. SEE INDIVIDUAL SIGNSOFF BELOW.;[03] REPLACED BONDING JUMPER PLATE LOC. UPPER REAR SPAR BETWEEN HINGE 7AND 8 AT VERTICAL STABILIZER IAW B737-700 AND SRM 51-10-02 ITEM 9 AND DWG #175A1601 SHEET 18 REV A; AMM 20-10-37-120-801 AND SWPM 20-20-00; TEST IS OK. SEE INDIVIDUAL SIGNSOFF BELOW.

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