Service difficulty report · Pressure Switch · Boeing 7673Y0

Difficulty date
September 15, 2019
Submitted
September 16, 2019
Operation
Air carrier
Aircraft
N1181A
Make and model
Boeing 7673Y0
Aircraft serial
26206
Aircraft time
86,180 hours, 21,404 cycles
Part
Pressure Switch
Condition
Malfunctioned
Location
Fuel System
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

R FWD FUEL EICAS DURING DURING CLIMB. FUEL MIGRATION FROM R TO L FUEL TANK OF 3000 LBS. T/S EICAS R FWD FUEL PUMP MESSAGE PER FIM TASK 28-22 FT 819, SHEET 3, BOX #4. DEFERRED R FWD BOOST PUMP PER MEL 28-22-01. THIS OPENS MDDR 117781. MCC BOB NOTIFIED, ALL PLACARDS INSTALLED. LP 1076167 - M3: T/S IAW FIM 28-22 FT 819. REMOVED RT FWD FUEL PUMP PRESSURE SWITCH TO BLEED PRESSURE SENSE LINE PER FIM IAW AMM 28-42-01. REINSTALLED RT FWD FUEL PUMP PRESSURE SWITCH AND OPS CHECK GOOD. NO DEFECTS NOTED, MDDR 117781 CLOSED. PLACARDS REMOVED AND MCC NOTIFIED.`

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