Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: Notesfiles; site hpfcmt.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!qantel!hplabs!hpfcdc!hpfcla!ron From: ron@hpfcla.UUCP Newsgroups: net.aviation Subject: Re: Deadstick- Straight-Tail 150 Engine Failure Message-ID: <16900018@hpfcmt.UUCP> Date: Thu, 31-Oct-85 13:07:00 EST Article-I.D.: hpfcmt.16900018 Posted: Thu Oct 31 13:07:00 1985 Date-Received: Mon, 11-Nov-85 06:09:27 EST References: <322@ssc-vax.UUCP> Organization: 31 Oct 85 11:07:00 MST Lines: 45 Fuel stories.... At least most of you had semi-legit. excuses - LOST ! (It happens to everyone at least once) One student 'round here came home with -1 gallon of usable fuel left because he'd forgotten to lean the mixture ! Fortunately it was a moderately turbulent day and the tank ports didn't remain uncovered long enough to scare him (in flight). For those who are not "into it" yet, there's always a portion of fuel tank volume which cannot be -consistently- used by the engine. This is called "unusable fuel" and comes about because the fuel line usually doesn't drain the tank dry. As an example: the motorglider I fly has a tank capacity of 26.5 gallons of fuel. Its usable fuel is only 24.5 gallons. If I plan a cross-country flight based upon 26.5 gallons of fuel available,and I don't allow any margin, I may wind up doing a little more gliding and a little less motoring than I had planned ! Also note that there is a great deal of difficulty in planning for your student to receive a 'scare' without placing him (or her) in real danger. Simulations while receiving instruction are not nearly as effective as one would hope because the student knows that the instructor won't let him get TOO far into a problem. I delight in taking another instructors pre-flight-test student down to 10' of altitude in a forced landing simulation because they become unsure of whether we really will land or not. But even then, they know that I won't let them break the aircraft (if I can help it). Ron Miller CFI-G No one has ever gone broke UNDERestimating the intelligence of the American public ! FSD Service Engineering (Hardware Support) Hewlett-Packard Co. Ft. Collins Systems Div. Ft. Collins Colorado 303-226-3800 at: {ihnp4}hpfcla!ron