SDR 9WGA2026040925801

Service difficulty report · Pump · Boeing 74747UF

Difficulty date: April 9, 2026
Submitted: April 10, 2026
Operation: Air carrier
Aircraft: N258SN
Make and model: Boeing 74747UF
Aircraft serial: 29258
Aircraft time: 94,698 hours, 15,226 cycles
System (JASC): 2830 · Fuel Dump System
Part: Pump
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

FUEL OVERRIDE JETTISON PUMP CENTER TANK-RIGHT M225 BEHIND OF THE BONDING JUMPER WAS FOUND CORROSION OF STRUCTURE. REPAIRED AREA AT FUEL OVERRIDE JETTISON PUMP CENTER TANK RIGHT M225, IAW B747-400 SRM 51-10-02, SRM 57-10-10, SOPM 20-10-03, WGN-WGN-26-0022-03B, D926U120-01, REV C, SRM 51-20-01 AND BMS-10-20, AMM 28-31-01,

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