Service difficulty report · Pressure Switch · Boeing 737823

Difficulty date
January 1, 2026
Submitted
January 7, 2026
Operation
Air carrier
Aircraft
N975AN
Make and model
Boeing 737823
Aircraft serial
29549
Aircraft time
68,200 hours, 29,005 cycles
Part
Pressure Switch
Part number
ASP4560
Condition
Faulty
Location
Zone 100
Stage of operation
CR
How discovered
V
Nature of condition
J, S
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: IN FLIGHT LEFT AFT FUEL PUMP LOW PRESSURE LIGHT DOES NOT ILLUMINATE WHEN PUMP TURNED OFF. **SUPPLEMENTAL REPORT FOR (AALA202601059132) SUBMITTED ON 1/5/2026 BY DFW: REPLACED NUMBER 1 TANK AFT LOW PRESSURE SWITCH. PER AMM 28-42-11**(CLOSED).