SDR CALA2023042101211

Service difficulty report · Pump · Boeing 737900ER

Difficulty date: April 21, 2023
Submitted: April 21, 2023
Operation: Air carrier
Aircraft: N37420
Make and model: Boeing 737900ER
Aircraft serial: 33457
Aircraft time: 47,364 hours, 16,490 cycles
System (JASC): 7311 · Engine Fuel/Oil Cooler
Part: Pump
Part number: 29731190001
Part serial: YA0138055
Condition: Faulty
Location: Eng #1
Part time: 29,433 hours, 10,585 cycles
Stage of operation: TO
How discovered: O
Nature of condition: O
Precautionary procedure: C

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

What was found

PUSHED TOGA FOR TAKEOFF AND THE NO.1 ENGINE WOULD NOT MAKE T.O. POWER. REMOVED #1 ENGINE HMU, REMOVED & REPLACED #1 ENGINE FUEL PUMP PACKAGE. R&R UNIT, HYDROMECH (29-7321-9-0012 0485). PERFORMED TEST 5 - POWER ASSURANCE CHECK PER AMM 71-00-00-700-813-F00. TEST PASS, NO FAULTS NOTED.

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