Service difficulty report · Pressure Switch · Boeing 757200

Difficulty date
February 4, 2022
Submitted
February 9, 2022
Operation
Air carrier
Aircraft
N773FD
Make and model
Boeing 757200
Aircraft serial
24872
Aircraft time
81,543 hours, 32,124 cycles
Part
Pressure Switch
Part number
7G1105
Condition
Failed
Location
N/A
Stage of operation
CR
How discovered
V
Nature of condition
J
Precautionary procedure
A

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

What was found

JUST PRIOR TO LEVEL OFF, RECEIVED L CTR FUEL PUMP EICAS MESSAGE. COMPLIED WITH QRH. WITH MEL 28-22-02-A ALREADY ON AIRCRAFT FOR RIGHT CENTER PUMP, WE DID NOT HAVE SUFFICIENT FUEL TO CONTINUE TO DESTINATION. DIVERTED TO KMCI PER GOC REQUEST. UPON FURTHER INVESTIGATION FOLLOWING B757 FIM 28-22 FT 804, NOTED RH FUEL PUMP AT 3.3 OHMS BETWEEN PINS 1&2, 2&3 AND 1&3 WHILE LEFT PUMP 19 OHMS BETWEEN PINS 1&2, 2&3 AND 1&3. RH FUEL PUMP IS WEAK AND RECOMMEND REPLACEMENT. REMOVED AND REPLACED LH CENTER FUEL OVERRIDE PRESSURE SWITCH PER B757 AMM 28-42-01-4-1. OPS/LEAK CHECK OF PRESSURE SWITCH GOOD. RH FUEL OVERRIDE PUMP REQUIRES REPLACEMENT PRIOR TO CLEARING OF MEL. PARTS ON HAND IN IND. REMOVED AND REPLACED CTR TANK RIGHT HAND OVERPUMP I. A.W. 28-22-03-04 - OPS CHECKED GOOD .

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