Service difficulty report · Pump · Boeing 7377BD

Difficulty date
January 30, 2024
Submitted
January 31, 2024
Operation
Air carrier
Aircraft
N7720F
Make and model
Boeing 7377BD
Aircraft serial
33922
Aircraft time
58,205 hours, 31,113 cycles
Part
Pump
Part number
UNKNOWN
Condition
Faulted
Location
Fuel Boost
Stage of operation
CL
How discovered
O
Nature of condition
K
Precautionary procedure
A

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

What was found

ON CLIMBOUT RT CTR PUMP LOW PRESSURE LIGHT ILLUMINATED RESULTING IN RT MAIN IMBALANCE OF 800-1000 LBS. OPENED CROSSFEED AND BALANCED MAIN TANKS BY TURNING OFF LEFT CTR PUMP AND RT MAIN PUMPS. NO OWL NO OVERWEIGHT LANDING NOTED.<[01] PERFORMED FIM TASK 28-41 TASK 814. FQIS BITE PASSED PER TASK 28-41 TASK 801. PERFORMED RT MAIN TANK COMPARISON CHECK PER AMM 28-41-00 AND VERIFIED ACCURATE QUANTITY WITH FUEL MEASURING STICKS. RT CTR TANK FUEL PUMP OK TO CONTINUE ON MEL 28-2-05 SP1 AND SP 2. AUTH # 177675;[02] TRANSFERRED APROX. 3500LBS OF FUEL IN CNTR TANK. R/H CNTR BOOST PUMP TRANSFERRED FUEL BACK INTO BOTH WINGS WITH NO FAULTS NOTED. NO ABNORMAL QUANTITY IND WHILE MOVING FUEL. OPS CHK GOOD PER AMM 28-22-41 & AMM 28-26-00.

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