Is it better to shut down the engine(s) or leave it (them) running when a gear up landing is imminent?
I noticed that the pilot in this video chose to shut down his engine before touching down during a gear up emergency landing. However, in Pilot Operating Handbooks, the recommendations seem to be mixed. For example, the Cessna 210 POH, Page 3-11 says:
- Touchdown -- SLIGHTLY TAIL LOW.
- Mixture - - IDLE CUT-OFF.
- Ignition Switch -- OFF.
- Fuel On-Off Valve -- OFF (pull out).
On the other hand, the POH for the Piper Arrow III PA28R-201, Page 3-14 recommends shutting down the engine before touching down:
3.lSb Gear Up Emergency Landing (3.Sd) When committed to a gear up landing, CLOSE the throttle, move the mixture to idle cut-off, and shut OFF the ignition, battery master (BATT MASTR), and alternator(ALTR) switches.Turn OFF the fuel selector valve. Seat belts and shoulder harness should be tightened. Touchdown should normally be made at the lowest possible airspeed with full flaps.
What is the reason for this variation? Is there some advantage to touching down one way vs. the other?
I've have noticed this question:
However, I do not believe this question duplicates that one. While consideration of the propeller would be one factor in deciding whether or not to shut down the engine, it certainly would NOT be the only one.