SDR DALA2023011200235

Service difficulty report · Hmu · Boeing 737832

Difficulty date: January 10, 2023
Submitted: January 12, 2023
Operation: Air carrier
Aircraft: N3750D
Make and model: Boeing 737832
Aircraft serial: 32375
Aircraft time: 70,089 hours, 26,526 cycles
Engine: Cfmint CFM567B262
Engine time: 63,330 hours, 28,991 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Hmu
Condition: Faulted
Location: Rt Engine
Stage of operation: TO
How discovered: O
Nature of condition: J
Precautionary procedure: C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PERFORMED ATO AT 60 KNOTS DUE TO RIGHT ENGINE SLOW TO ACCEL. CORRECTIVE ACTION: FOUND FUEL PUMP IMPELLER SHAFT SHEARED. REPLACED RIGHT ENGINE FUEL PUMP PER B737 AMM 73-11 AND REPLACED RIGHT ENGINE HMU PER B737 AMM 73-21. ENGINE RUN UP OK, AIRCRAFT RETURNED TO SERVICE.