Service difficulty report · Pressure Switch · Boeing 7378H4

Difficulty date
October 6, 2026
Submitted
October 8, 2026
Operation
Air carrier
Aircraft
N8631A
Make and model
Boeing 7378H4
Aircraft serial
42385
Aircraft time
41,417 hours, 20,195 cycles
Engine
Cfmint CFM567B27E
Part
Pressure Switch
Condition
Faulted
Location
Eng Fuel
Stage of operation
CL
How discovered
O
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

NR 1 ENG FUEL FILTER BYPASS LIGHT ILLUMINATED, DRAINED FUYEL FILTER NO CONTAMINATION NOTED. FILTER TO BE REPLACED IN 1 CYCLE. OK TO CONTINUE ON MEL 73-4-01 SP1 MDDR 343842 REMOVED & REPLACED FUEL FILTER & FUEL FILTER DIFFERENTIAL PRESSURE SWITCH IAW MM 73-34-01 & 73-11-02 -RAN ENGINE OPS CHKD NORMAL & LK CHKD NORMAL

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