Regional Jet 700 ER/LR (CRJ700)
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Inflight Shutdown; Flight Crew Became Reoriented; General Maintenance Action
Aircraft; Human Factors
On short final I went to cancel the glideslope warning about 100-200 ft above touchdown and accidently pushed the left engine fire button. The guard on the button was stuck in the up position and the engine was shutting down as we were touching down. It was night time operations with low lighting and I did not see the guard was broken and stuck in the up position. A slight yawing [occurred] as the engine was spooling down. The broken switch guard which was not written up by previous crews or caught by maintenance. Proceeded to a normal landing. Wrote up the problem in maintenance log and discussed the issue with the maintenance personnel who picked up the plane at the gate. All guarded switches need to be checked during maintenance rotations for broken or weak springs and ensure they close properly.
After arriving at the gate; we turned the lights on; and [the] Captain pointed out that the guard for the LH Fire Push Light was not all the way down. It was stuck up at a 45 degree angle. This would make it possible to accidentally push the button in the dark flight deck. [The] Captain wrote up the guard in the maintenance logbook.
CRJ-700 flight crew reported the Captain accidentally pushed the left engine fire button instead of the glideslope warning cancel button on short final resulting in an unintended engine shutdown.