Service difficulty report · Pressure Switch · Boeing 737990ER

Difficulty date
October 10, 2019
Submitted
October 22, 2019
Operation
Air carrier
Aircraft
N419AS
Make and model
Boeing 737990ER
Aircraft serial
41734
Aircraft time
26,070 hours, 8,455 cycles
Engine
Cfmint CFM567B27E
Part
Pressure Switch
Part number
QA07995
Part serial
RZ23353
Condition
Faulted
Location
Nr 2 Engine
Part time
16,009 hours, 5,208 cycles
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

RIGHT ENGINE FUEL FILTER BYPASS ILLUMINATED. GROUNDED - YES. REPLACED ENG NR 2 FUEL DIFFERENTIAL PRESSURE SWITCH IAW AMM 73-34-01/401. OPS GOOD PER AMM SUBTASK 73-34-01-840-004-F00. LEAK CHECK AT IDLE POWER GOOD PER TASK 71-00-00-700-801-F00.