Service difficulty report · Doubler · Boeing 7378H4

Difficulty date
June 18, 2024
Submitted
July 19, 2024
Operation
Air carrier
Aircraft
N8578Q
Make and model
Boeing 7378H4
Aircraft serial
64349
Aircraft time
19,610 hours, 10,120 cycles
Part
Doubler
Condition
Corroded
Location
Zone 100
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

MIDDLE FUSELAGE DRAIN DOUBLER HAS CORROSION AROUND FASTENERS AFT OF MLG WHEEL WELL DOT M334<[01] REMOVED CORROSION; ORIG. .063; REF BAC DWG 146A3239 REV -; MATERIAL LOSS .005; REMAINING .058 NO DAMAGED ALLOWED IN THIS AREA; REF B737-NG SRM 53-60-01-1A-1 TABLE 102; REMOVED AND REPLACED MIDDLE FUSELAGE DRAIN DOUBLER IAW B737NG-SRM 51-40-02 AND BAC DWG#146A3230 REV:-;[02] VERIFIED REMOVED CORROSION; ORIG. .063; REF BAC DWG 146A3239 REV -; MATERIAL LOSS .005; REMAINING .058 NO DAMAGED ALLOWED IN THIS AREA; REF B737-NG SRM 53-60-01-1A-1 TABLE 102; REMOVED AND REPLACED MIDDLE FUSELAGE DRAIN DOUBLER IAW B737NG-SRM 51-40-02 AND BAC DWG#146A3230 REV:-;[03] VERIFIED REMOVED CORROSION; ORIG. .063; REF BAC DWG 146A3239 REV -; MATERIAL LOSS .005; REMAINING .058 NO DAMAGED ALLOWED IN THIS AREA; REF B737-NG SRM 53-60-01-1A-1 TABLE 102; REMOVED AND REPLACED MIDDLE FUSELAGE DRAIN DOUBLER IAW B737NG-SRM 51-40-02 AND BAC DWG#146A3230 REV:-

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