Service difficulty report · Pressure Switch · Boeing 737823

Difficulty date
November 20, 2025
Submitted
December 2, 2025
Operation
Air carrier
Aircraft
N926AN
Make and model
Boeing 737823
Aircraft serial
29527
Aircraft time
66,444 hours, 27,612 cycles
Part
Pressure Switch
Part number
21C13211
Condition
Inoperative
Location
Zone 100
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

AIRCRAFT WAS NOT GROUNDED: LEFT FORWARD FUEL PUMP LOW PRESSURE LIGHT DOES NOT ILLUMINATE WHEN FUEL PUMP IS TURNED OFF, LIGHT BULB TESTS GOOD WITH LIGHT TEST SWITCH IN THE TEST POSITION. VERIFIED LEFT FORWARD FUEL PUMP INOPERATIVE. REMOVED AND REPLACED LEFT HAND FORWARD FUEL BOOST PUMP PRESSURE SWITCH. PER AMM 28-42-11. OPERATIONAL AND LEAK CHECK GOOD.