Hey Dom,
I certainly agree with you there are
issues with this subject. I was once asked by a flight attendant what would
happen if ALL of our hydraulic pressure for the flight controls was lost.
I just told her that was the day she was going to die; but not to worry because
I would die before she did. (Of course, the United Airlines crew of the DC-10
showed that there are possible exceptions).
I don’t think I am God’s gift
to anything (I hope that doesn’t mean I’m not really a pilot) (:
but I do have my opinions about many things. There is a time during departure
where few options are available. However as to your bet that the time
(distance) required to reach the right altitude for a return to the departure
airport puts that airport out of reach even if a 180 degree turn can be
successfully executed it, again, depends on several factors.
I can only speak for the capability of my
airplane but my “dead man zone is very brief. I have a climb rate of over
5,000 FPM at the following weight/airspeed/power:
Weight: 2224 lbs
Climb Speed: 140 Kts IAS
Power: 2700 RPM/38” MP
I can reach 1,000’ AGL in about 12
seconds. I will have traveled about 2,800’ down track. That doesn’t
put me beyond the departure airport. My rate of descent with the prop feathered
is about 600 FPM that gives me about 1 minute and 40 seconds to impact. I will
have traveled a little over 10, 000’ over the ground (at 135 kts).
My airport has three runways, which
reduces the number of degrees to turn to find a smooth surface for landing.
Even if you can’t get aligned with a runway, airports generally offer
more relatively flat surfaces than other places.
There is a “dead man zone” but
when you aren’t in it don’t act as if you are. It is for each to
determine the size of that “dead man zone” as it applies to his/her
situation.
Shoot, I like it better when I had an
ejection seat. I even still wear a parachute when I fly alone and I don’t
joust with Thor!
Lynn Farnsworth
Super Legacy #235
TSIO-550 Powered
Race 44
Feathering Prop
From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Dominic V Crain
Sent: Monday, May 19, 2008 2:31 PM
To: lml@lancaironline.net
Subject: [LML] Re: Turn back to
the Airport after engine failure
Lynn, me ol’ China –
no one is shouting the idea down.
There ARE issues with this procedure and
better they be aired herein, which, unless I’m mistaken, is set up for
this thread as much as anything.
ALL pilots think they are God’s gift
etc., to the business. We all think our ideas are the best. I happen to dispute
this procedure as being a wise mindset, as I think the evidence is that,
practice or not, the end result is more fatal than not.
But deny Bill or anyone else his right to
debate, is equally unwise.
Just on one point you made, what is the
right altitude? It is a fair bet that the right altitude puts you laterally
beyond reach of your departure airfield, in which case it might be better to
concentrate on what’s ahead in the splay.
Cheers
Dom
VH-CZJ