Service difficulty report · Pump · Boeing 7379

Difficulty date
May 30, 2022
Submitted
June 1, 2022
Operation
Air carrier
Aircraft
N920AK
Make and model
Boeing 7379
Aircraft serial
44086
Aircraft time
2,310 hours, 697 cycles
Engine
Cfmint LEAP1B28
Part
Pump
Part number
2566M05P04
Part serial
WYGM1709
Condition
Leaking
Location
#1 Engine
Part time
1,871 hours, 619 cycles
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

ENGINE #1 DRIPPING FUEL FROM FUEL PUMP PAD DRAIN. GROUNDED - YES. RAN #1 ENGINE AT IDLE FOR 5 MINUTES. FOUND LEAK RATE TO BE 40 DROPS PER MINUTE. LEAK RATE FALLS BELOW THRESHOLD LIMIT OF 60 DROPS PER MINUTE. NO FURTHER ACTION REQUIRED REF B737-9 AMM 71-71-00-200-801-G00. REF ASA TSR712206 - REMOVED AND REPLACED #1 ENG FUEL PUMP. NO LEAKS OR FAULTS NOTED REF AMM 73-11-01. OP'S CK GOOD. REF AMM 71-00-00.

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