Service difficulty report · Pressure Switch · Boeing 737823

Difficulty date
October 31, 2025
Submitted
November 3, 2025
Operation
Air carrier
Aircraft
N923AN
Make and model
Boeing 737823
Aircraft serial
29524
Aircraft time
73,342 hours, 30,910 cycles
Part
Pressure Switch
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 GROUNDED: LEFT AFT FUEL PUMP DOES NOT ILLUMINATE LOW PRESSURE IN THE OFF POSITION. REMOVED AND REPLACED LEFT AFT FUEL PUMP LOW PRESSURE SWITCH. PER MM 28-42-11. OPERATIONAL AND LEAK CHECKS GOOD.