Service difficulty report · Switch · Boeing 737724

Difficulty date
February 20, 2026
Submitted
February 25, 2026
Operation
Air carrier
Aircraft
N27724
Make and model
Boeing 737724
Aircraft serial
28791
Aircraft time
82,480 hours, 30,456 cycles
Part
Switch
Part number
285A17102
Part serial
D00688
Condition
Faulted
Location
Zone 200
Part time
82,456 hours, 30,442 cycles
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

EMERGENCY LIGHTS OPS CHK, CREW INDUCED FAULT. EMERGENCY LIGHTS STUCK ON. LOGIC IS OUT OF SEQUENCE IAW FIM 33-50, TASK 801, REMOVED & REPLACED PILOTS EMERGENCY EXIT LIGHT SWITCH S7 IAW WDM 33-51-11-. NO HELP, EXIT LIGHTS REMAIN ON WHEN SWITCH IS IN OFF. FOUND AFT ATTENDANT EMERGENCY LIGHT SWITCH STICKING INTERNALLY. NEEDS MODULE 285A1710-2 29-3326-9-9002. R & R LIGHTING MODULE AFT ATTENDANTS PANEL. IAW AMM 25-25-11-400-801. EMERGENCY LIGHTS OP CHKD NORMAL FROM FLIGHT DECK AND AFT ATTENDANTS PANEL.IAW AMM 33-51-00-720-801, & 33-51-00-710-80.