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H.P.
Guest
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 Posted: Tue Oct 12, 2004 4:27 am Post subject: Engine quits after landing |
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My instructor and I are landing full-stop the other day after practicing
slow flight
and about a second after I flare and touch down with the engine at idle, the
engine quits.
We're about 20 ft short of the
taxiway and behind us is a Citation on final. The tower has him go-around
while were trying to restart. A little excitement at that particular moment
but afterward I viewed the situation as quite hazardous.
I was in a fuel-injected 172 Skyhawk with less than 2000 hours on it. On the
run-up, the engine idled fine.
The instructor was told by the shop that the idle was set too low. I'm not
sure about that analysis.
Anyone have this happen to them?
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Gene Whitt
Guest
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| Posted: Tue Oct 12, 2004 4:36 am Post subject: Re: Engine quits after landing |
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H.P.
Many years ago I landed a fuel injected Arrow at an altitude of
7000 feet. on a 100-degree day. In habit I had enriched the mixture in an
obviously density altitude situation. The engine died as we rolled down the
runway. We had to use a tow bar to get off the runway.
Gene whitt
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Dale
Guest
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| Posted: Tue Oct 12, 2004 5:30 am Post subject: Re: Engine quits after landing |
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In article <C2Jad.11953$nj.5676 (AT) newssvr13 (DOT) news.prodigy.com>,
"H.P." <466666 (AT) email (DOT) com> wrote:
| Quote: | I was in a fuel-injected 172 Skyhawk with less than 2000 hours on it. On the
run-up, the engine idled fine.
The instructor was told by the shop that the idle was set too low. I'm not
sure about that analysis.
|
Sounds plausable. I've had that happen occasionaly in a 206 especially
if I have the power to idle for a while on final. Maybe some vapor
lock, or it "loads up" from the extended idle power time.
--
Dale L. Falk
There is nothing - absolutely nothing - half so much worth doing
as simply messing around with airplanes.
http://home.gci.net/~sncdfalk/flying.html
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Bob Noel
Guest
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| Posted: Tue Oct 12, 2004 11:14 am Post subject: Re: Engine quits after landing |
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In article <C2Jad.11953$nj.5676 (AT) newssvr13 (DOT) news.prodigy.com>, "H.P."
<466666 (AT) email (DOT) com> wrote:
| Quote: | I was in a fuel-injected 172 Skyhawk with less than 2000 hours on it. On
the
run-up, the engine idled fine.
The instructor was told by the shop that the idle was set too low. I'm
not
sure about that analysis.
|
When you say "idled fine" was that with the throttle completely
closed?
--
Bob Noel
Seen on Kerry's campaign airplane: "the real deal"
oh yeah baby.
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Peter R.
Guest
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| Posted: Tue Oct 12, 2004 11:47 am Post subject: Re: Engine quits after landing |
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H.P. (466666 (AT) email (DOT) com) wrote:
| Quote: | My instructor and I are landing full-stop the other day after practicing
slow flight
and about a second after I flare and touch down with the engine at idle, the
engine quits.
|
<snip>
| Quote: | The instructor was told by the shop that the idle was set too low. I'm not
sure about that analysis.
Anyone have this happen to them?
|
Yes.
In the case of my Bonanza, it was not that the idle was too low, but
rather that the mixture setting was incorrect for low idle. The end
result was the same, however: The engine would quit if the throttle
were retarded to low idle.
I learned to fly in a late model, fuel-injected C172SP a couple of years
ago. I recall a line item in the run-up portion of the checklist that,
after the run-up, required the throttle be momentarily pulled to idle to
test this specific condition.
If this is not in your checklist, perhaps you should add it?
--
Peter
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Ron Natalie
Guest
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| Posted: Tue Oct 12, 2004 1:50 pm Post subject: Re: Engine quits after landing |
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H.P. wrote:
| Quote: | My instructor and I are landing full-stop the other day after practicing
slow flight
and about a second after I flare and touch down with the engine at idle, the
engine quits.
The idle mixture is too rich. |
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H.P.
Guest
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| Posted: Tue Oct 12, 2004 3:01 pm Post subject: Re: Engine quits after landing |
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At run-up, the throttle control was pulled all the way back, per the
checklist.
"Bob Noel" <ihatessppaamm (AT) netscape (DOT) com.invalid> wrote
| Quote: | In article <C2Jad.11953$nj.5676 (AT) newssvr13 (DOT) news.prodigy.com>, "H.P."
[email]466666 (AT) email (DOT) com[/email]> wrote:
I was in a fuel-injected 172 Skyhawk with less than 2000 hours on it. On
the
run-up, the engine idled fine.
The instructor was told by the shop that the idle was set too low. I'm
not
sure about that analysis.
When you say "idled fine" was that with the throttle completely
closed?
--
Bob Noel
Seen on Kerry's campaign airplane: "the real deal"
oh yeah baby.
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H.P.
Guest
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| Posted: Tue Oct 12, 2004 3:01 pm Post subject: Re: Engine quits after landing |
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That's exactly what I did at run-up.
"Peter R." <prgroup3 (AT) twcny (DOT) rrX.com> wrote
| Quote: | H.P. (466666 (AT) email (DOT) com) wrote:
My instructor and I are landing full-stop the other day after practicing
slow flight
and about a second after I flare and touch down with the engine at idle,
the
engine quits.
snip
The instructor was told by the shop that the idle was set too low. I'm
not
sure about that analysis.
Anyone have this happen to them?
Yes.
In the case of my Bonanza, it was not that the idle was too low, but
rather that the mixture setting was incorrect for low idle. The end
result was the same, however: The engine would quit if the throttle
were retarded to low idle.
I learned to fly in a late model, fuel-injected C172SP a couple of years
ago. I recall a line item in the run-up portion of the checklist that,
after the run-up, required the throttle be momentarily pulled to idle to
test this specific condition.
If this is not in your checklist, perhaps you should add it?
--
Peter
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Ron Natalie
Guest
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| Posted: Tue Oct 12, 2004 4:26 pm Post subject: Re: Engine quits after landing |
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H.P. wrote:
| Quote: | That's exactly what I did at run-up.
|
It won't necessarily catch the condition if the engine isn't
hot. The common symptom of a too-rich idle setting is everything
works fine on the ground through run-up, flight, etc... and then
the engine dies with the throttle at idle on roll out (when the
prop stops getting help from the airstream).
Have a mechanic check the injection/carb settings.
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Ryan Ferguson
Guest
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| Posted: Thu Oct 14, 2004 9:57 pm Post subject: Re: Engine quits after landing |
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H.P. wrote:
| Quote: | The instructor was told by the shop that the idle was set too low. I'm not
sure about that analysis.
Anyone have this happen to them?
|
Maladjusted (grin) idle mixture is plausible and probable. Happened to
me a couple of times. It's a quick and simple adjustment for the
mechanic, and extremely unlikely to cause safety issues (unless you
consider it dangerous to be a sitting duck on the runway.)
-Ryan
ATP/CFII (airplanes and helicopters)
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Robert M. Gary
Guest
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| Posted: Fri Oct 15, 2004 9:50 pm Post subject: Re: Engine quits after landing |
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Ron Natalie <ron (AT) sensor (DOT) com> wrote
| Quote: | H.P. wrote:
That's exactly what I did at run-up.
It won't necessarily catch the condition if the engine isn't
hot. The common symptom of a too-rich idle setting is everything
works fine on the ground through run-up, flight, etc... and then
the engine dies with the throttle at idle on roll out (when the
prop stops getting help from the airstream).
Have a mechanic check the injection/carb settings.
|
When people ask me what the benefit of owning vs. renting I can't help
but think of these types of situations. A couple months ago I
overhauled the mags on my Mooney. There wasn't anything wrong with
them but it seemed like about time. Shortly afterwards I went to fly
with a student in an FBO Warrior. At run up we weren't getting
anything on one of the mags. I grounded the plane and wrote it up. The
write up came back and the A&P said the advance was out of adjustment.
Well, I've owned airplanes for a few years now and I've never had a
mag get out of adjustment for no reason. We flew the plane and a
couple weeks later someone wrote it up for the same problem. This time
the mag got overhauled.
So in a rental plane the mag must fail twice before the mag gets
overhauled. This could have been a renter in the middle of no-where,
at night with no ground transporation. That doesn't effect the ROI for
the FBO though. In my Mooney, I know the mags will work each time
because I just overhauled them.
That's the difference between renting and owning.
That and getting used to writing really big checks without blinking.
-Robert
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MichaelR
Guest
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| Posted: Sun Oct 17, 2004 10:24 pm Post subject: Re: Engine quits after landing |
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I had the same thing happen on a (then brand new) 1998 fuel-injected
Skyhawk.
On a later flight the engine quit when I reduced power entering the pattern.
I found that the engine would only run above 3/4 throttle, and then it would
run fine. Below that, no power at all. After gliding in to a landing, it
started up fine on the runway. Mechanic said he couldn't find anything
wrong, and the fuel all looked good.
"H.P." <466666 (AT) email (DOT) com> wrote
| Quote: | My instructor and I are landing full-stop the other day after practicing
slow flight
and about a second after I flare and touch down with the engine at idle,
the engine quits.
We're about 20 ft short of the
taxiway and behind us is a Citation on final. The tower has him go-around
while were trying to restart. A little excitement at that particular
moment
but afterward I viewed the situation as quite hazardous.
I was in a fuel-injected 172 Skyhawk with less than 2000 hours on it. On
the
run-up, the engine idled fine.
The instructor was told by the shop that the idle was set too low. I'm not
sure about that analysis.
Anyone have this happen to them?
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C J Campbell
Guest
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| Posted: Sun Oct 17, 2004 11:06 pm Post subject: Re: Engine quits after landing |
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"H.P." <466666 (AT) email (DOT) com> wrote
| Quote: | We're about 20 ft short of the
taxiway and behind us is a Citation on final. The tower has him go-around
while were trying to restart. A little excitement at that particular
moment
but afterward I viewed the situation as quite hazardous.
|
I would not regard the situation as all that hazardous. It is VFR and an
airplane sitting on the runway is quite visible. Night or reduced visibility
would be another matter.
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