Service difficulty report · Pressure Switch · Boeing 737823

Difficulty date
January 7, 2026
Submitted
January 10, 2026
Operation
Air carrier
Aircraft
N979AN
Make and model
Boeing 737823
Aircraft serial
29568
Aircraft time
49,103 hours, 20,787 cycles
Part
Pressure Switch
Part number
ASP4560
Condition
Faulted
Location
Fuel Sys
Stage of operation
IN
How discovered
V
Nature of condition
J
Precautionary procedure
K

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

What was found

AIRCRAFT WAS NOT GROUNDED: JUST AFTER TAKE OFF THE LEFT FORWARD FUEL LOW PRESSURE LIGHT ILLUMINATED AND REMAINED. REMOVED AND REPLACED PRESSURE SWITCH. ACCOMPLISHED OPERATIONAL TEST OF THE LEFT FORWARD BOOST PUMP. PER AMM 28-22-41-710-801 AND OPERATIONAL CHECKS NORMAL.