Service difficulty report · Switch · Boeing 737823

Difficulty date
May 14, 2025
Submitted
May 17, 2025
Operation
Air carrier
Aircraft
N943NN
Make and model
Boeing 737823
Aircraft serial
31177
Aircraft time
33,752 hours, 13,632 cycles
Part
Switch
Condition
Faulty
Location
Zone 800
Stage of operation
NR
How discovered
O
Nature of condition
O
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: COCKPIT DOOR RED GUARDED SWITCH IS INTERMITTENT WHEN TURNED OFF, MUST PUSH UP HARD ON SWITCH TO DISARM DOOR. FOUND AUTOLOCK SWITCH BAD. REMOVE AND REPLACED CHIME MODULE. PER AMM 52-51-06. ALL OPERTIONAL CHECK GOOD.