Service difficulty report · Pressure Switch · Boeing 76736N

Difficulty date
April 28, 2021
Submitted
April 30, 2021
Operation
Air carrier
Aircraft
N1093A
Make and model
Boeing 76736N
Aircraft serial
30111
Aircraft time
83,847 hours, 12,456 cycles
Part
Pressure Switch
Condition
Malfunctioned
Location
Fuel System
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

L AFT PUMP PRESS LT REMAINED ON WITH SWITCH ON BEFORE START. AFTER A/NC & CYCLING SWITCH BACK TO PRESS LIGHT WENT OUT. T/S PER FIM 28-22 FT 819, REMOVED LH AFT FUEL PRESSURE SWITCH TO BLEED PRESSURE SENSE LINE PER FIM. REINSTALLED LH AFT FUEL PRESSURE SWITCH AND OPS CHECKED IAW AMM 28-42-01. OPS CHECK GOOD, PRESSURE LIGHT FUNCTIONS CORRECTLY. THIS CLEARS DMI 146049, PLACARD REMOVED.

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