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To:  lml@lancaironline.net
Date: Thu, 06 Dec 2012 10:03:25 -0500
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From: jeffrey liegner <liegner@ptd.net>
Subject: re: overhead and engine out approaches (LIVP)
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My engine out procedure for landing is not an overhead approach, at least not as described recently here using the High Key Low Key technique.  With the Chelton system (and possibly the Garmin EFIS), I can create a glide slope into the airport that allows for a stabilized straight in none (9) degree glide to the runway.  

I can then fly OUTBOUND and intercept this glide slope and turn INBOUND and travel down it (120 KIAS, engine out) and even have the autopilot (Sorcerer with V Nav) track it.  At 10,000' engine out, at a fully feathered 20:1 glide ratio (I have actually programmed 15:1 to account for headwind on long final plus sloppy pilot skills), this might be a 10 mile outbound leg to turn on course towards the airport.

The High Key Low Key technique will not work effectively when the weather is IMC and ceilings are below 500' AGL.  WIthout orientation to the airport, making sharp turns (at thirty degree bank angle) in IMC and then popping out of IMC at 500 AGL and then trying to align to the runway could present a challenge greater than my skill set.

I have worked with HPAT and LOBO, and these instructors have been cooperative with this demonstrated ability and the logic of a stabilized engine out approach, particularly in IMC.

Just my opinion...

Jeff L
LIVP


From: Dr Andres Katz <bu131@swbell.net>
Subject: overhead and engine out approaches
Date: December 5, 2012 7:20:56 PM EST
To: lml@lancaironline.net


one last thing that needs to be clarified.
engine out approaches are overhead approaches
if your engine fails you want as much altitude over the field to ensure landing
if you are out of range you are out of luck
so overhead and engine out approaches are one and the same thing
there is a wonderful app that goes on the ipad called xavion 99 bucks 
and could save your life
its a computerized constantly changing nearest airport approach with engine out
is available on the mac store. It takes about 5 hrs to enter your engine glide and performance
then you can see the highway on the sky with the overhead approach to the closest airport available

highly recommended

ak