Another impossible turn?

[More_Flaps]

" On July 07, 2008, at 1755 eastern daylight time, an experimental,
Douglas A. Pohl, amateur built, Lancair IV-P, N488SD, crashed after a
loss of engine power at the North Perry Airport (HWO), Hollywood,
Florida. The pilot was killed and the airplane was destroyed. The
flight was operated by a private individual, under the provisions of
14 Code of Federal Regulations Part 91 as a personal flight. Visual
meteorological conditions prevailed and no flight plan was filed.

Witnesses stated to the responding Federal Aviation Administration
inspector that they observed the airplane depart from runway 9R. When
the airplane was at an estimated altitude of 150 feet above the
ground, the engine lost power; one witness stated, it sounded like an
18 wheeler down shifting, another stated, it lost power completely.
Immediately following the loss of power, the airplane was observed to
make a left turn. It continued the turn increasing the bank angle. The
airplane stalled when it reached about 80 degrees of bank. It impacted
the ground nose first. The airplane came to rest on a 20 foot tall
tennis court fence. A fire ensued moments later, which consumed most
of the airplane. "

http://www.ntsb.gov/ntsb/brief.asp?ev_id=20080719X01077&key=1

With all the houses at the end of the runway he probably couldn't
think what else to do but such a steep turn is a bad mistake.
Development within the takeoff/landing fans close to airports should
be limited to golf courses and parks IMO.

Cheers

[Gig 601Xl Builder]

More_Flaps wrote:
> " On July 07, 2008, at 1755 eastern daylight time, an experimental,
> Douglas A. Pohl, amateur built, Lancair IV-P, N488SD, crashed after a
> loss of engine power at the North Perry Airport (HWO), Hollywood,
> Florida. The pilot was killed and the airplane was destroyed. The
> flight was operated by a private individual, under the provisions of
> 14 Code of Federal Regulations Part 91 as a personal flight. Visual
> meteorological conditions prevailed and no flight plan was filed.
>
> Witnesses stated to the responding Federal Aviation Administration
> inspector that they observed the airplane depart from runway 9R. When
> the airplane was at an estimated altitude of 150 feet above the
> ground, the engine lost power; one witness stated, it sounded like an
> 18 wheeler down shifting, another stated, it lost power completely.
> Immediately following the loss of power, the airplane was observed to
> make a left turn. It continued the turn increasing the bank angle. The
> airplane stalled when it reached about 80 degrees of bank. It impacted
> the ground nose first. The airplane came to rest on a 20 foot tall
> tennis court fence. A fire ensued moments later, which consumed most
> of the airplane. "
>
> http://www.ntsb.gov/ntsb/brief.asp?ev_id=20080719X01077&key=1
>
> With all the houses at the end of the runway he probably couldn't
> think what else to do but such a steep turn is a bad mistake.
> Development within the takeoff/landing fans close to airports should
> be limited to golf courses and parks IMO.
>
> Cheers
If the Paul J Maxwell Park wasn't on the airport grounds he probably
could have made the turn North and landed it. Either that or go for SW
13th St.

http://maps.google.com/maps?ie=UTF8&q=North+Perry+Airport+(HWO),&near=Hollywood,+FL&fb=1&cid=0,0,1921053376121994681&t=h&ll=26.000019,-80.233401&spn=0.006528,0.009613&z=17

[[email protected]]

On Aug 6, 3:53*pm, Gig 601Xl Builder >
wrote:
> More_Flaps wrote:
> > " On July 07, 2008, at 1755 eastern daylight time, an experimental,
> > Douglas A. Pohl, amateur built, Lancair IV-P, N488SD, crashed after a
> > loss of engine power at the North Perry Airport (HWO), Hollywood,
> > Florida. The pilot was killed and the airplane was destroyed. The
> > flight was operated by a private individual, under the provisions of
> > 14 Code of Federal Regulations Part 91 as a personal flight. Visual
> > meteorological conditions prevailed and no flight plan was filed.
>
> > Witnesses stated to the responding Federal Aviation Administration
> > inspector that they observed the airplane depart from runway 9R. When
> > the airplane was at an estimated altitude of 150 feet above the
> > ground, the engine lost power; one witness stated, it sounded like an
> > 18 wheeler down shifting, another stated, it lost power completely.
> > Immediately following the loss of power, the airplane was observed to
> > make a left turn. It continued the turn increasing the bank angle. The
> > airplane stalled when it reached about 80 degrees of bank. It impacted
> > the ground nose first. The airplane came to rest on a 20 foot tall
> > tennis court fence. A fire ensued moments later, which consumed most
> > of the airplane. "
>
> >http://www.ntsb.gov/ntsb/brief.asp?ev_id=20080719X01077&key=1
>
> > With all the houses at the end of the runway he probably couldn't
> > think what else to do but such a steep turn is a bad mistake.
> > Development within the takeoff/landing fans close to airports should
> > be limited to golf courses and parks IMO.
>
> > Cheers
>
> If the Paul J Maxwell Park wasn't on the airport grounds he probably
> could have made the turn North and landed it. Either that or go for SW
> 13th St.
>
> http://maps.google.com/maps?ie=UTF8&q=North+Perry+Airport+(HWO),&near....- Hide quoted text -
>
> - Show quoted text -

Looks like he had two good choices, SW13 and SW14 streets. I'd go for
the one with the fewest parked cars.

[Peter Dohm]

> wrote in message
...
On Aug 6, 3:53 pm, Gig 601Xl Builder >
wrote:
> More_Flaps wrote:
> > " On July 07, 2008, at 1755 eastern daylight time, an experimental,
> > Douglas A. Pohl, amateur built, Lancair IV-P, N488SD, crashed after a
> > loss of engine power at the North Perry Airport (HWO), Hollywood,
> > Florida. The pilot was killed and the airplane was destroyed. The
> > flight was operated by a private individual, under the provisions of
> > 14 Code of Federal Regulations Part 91 as a personal flight. Visual
> > meteorological conditions prevailed and no flight plan was filed.
>
> > Witnesses stated to the responding Federal Aviation Administration
> > inspector that they observed the airplane depart from runway 9R. When
> > the airplane was at an estimated altitude of 150 feet above the
> > ground, the engine lost power; one witness stated, it sounded like an
> > 18 wheeler down shifting, another stated, it lost power completely.
> > Immediately following the loss of power, the airplane was observed to
> > make a left turn. It continued the turn increasing the bank angle. The
> > airplane stalled when it reached about 80 degrees of bank. It impacted
> > the ground nose first. The airplane came to rest on a 20 foot tall
> > tennis court fence. A fire ensued moments later, which consumed most
> > of the airplane. "
>
> >http://www.ntsb.gov/ntsb/brief.asp?ev_id=20080719X01077&key=1
>
> > With all the houses at the end of the runway he probably couldn't
> > think what else to do but such a steep turn is a bad mistake.
> > Development within the takeoff/landing fans close to airports should
> > be limited to golf courses and parks IMO.
>
> > Cheers
>
> If the Paul J Maxwell Park wasn't on the airport grounds he probably
> could have made the turn North and landed it. Either that or go for SW
> 13th St.
>
> http://maps.google.com/maps?ie=UTF8&q=North+Perry+Airport+(HWO),&near...-
> Hide quoted text -
>
> - Show quoted text -

Looks like he had two good choices, SW13 and SW14 streets. I'd go for
the one with the fewest parked cars.

---------new post---------

Given the combination of torque and wing loading, and the probable climb
angle, there could be much more in play than the "impossible turn" scenario.
Given the past reliability of publicly available eye witnesses, I think that
I might wait for a little more information from known sources before I add
my own pet hypothesis.

Peter

[Peter Dohm]

"Peter Dohm" > wrote in message
...
> > wrote in message
> ...
> On Aug 6, 3:53 pm, Gig 601Xl Builder >
> wrote:
>> More_Flaps wrote:
>> > " On July 07, 2008, at 1755 eastern daylight time, an experimental,
>> > Douglas A. Pohl, amateur built, Lancair IV-P, N488SD, crashed after a
>> > loss of engine power at the North Perry Airport (HWO), Hollywood,
>> > Florida. The pilot was killed and the airplane was destroyed. The
>> > flight was operated by a private individual, under the provisions of
>> > 14 Code of Federal Regulations Part 91 as a personal flight. Visual
>> > meteorological conditions prevailed and no flight plan was filed.
>>
>> > Witnesses stated to the responding Federal Aviation Administration
>> > inspector that they observed the airplane depart from runway 9R. When
>> > the airplane was at an estimated altitude of 150 feet above the
>> > ground, the engine lost power; one witness stated, it sounded like an
>> > 18 wheeler down shifting, another stated, it lost power completely.
>> > Immediately following the loss of power, the airplane was observed to
>> > make a left turn. It continued the turn increasing the bank angle. The
>> > airplane stalled when it reached about 80 degrees of bank. It impacted
>> > the ground nose first. The airplane came to rest on a 20 foot tall
>> > tennis court fence. A fire ensued moments later, which consumed most
>> > of the airplane. "
>>
>> >http://www.ntsb.gov/ntsb/brief.asp?ev_id=20080719X01077&key=1
>>
>> > With all the houses at the end of the runway he probably couldn't
>> > think what else to do but such a steep turn is a bad mistake.
>> > Development within the takeoff/landing fans close to airports should
>> > be limited to golf courses and parks IMO.
>>
>> > Cheers
>>
>> If the Paul J Maxwell Park wasn't on the airport grounds he probably
>> could have made the turn North and landed it. Either that or go for SW
>> 13th St.
>>
>> http://maps.google.com/maps?ie=UTF8&q=North+Perry+Airport+(HWO),&near...-
>> Hide quoted text -
>>
>> - Show quoted text -
>
> Looks like he had two good choices, SW13 and SW14 streets. I'd go for
> the one with the fewest parked cars.
>
> ---------new post---------
>
> Given the combination of torque and wing loading, and the probable climb
> angle, there could be much more in play than the "impossible turn"
> scenario. Given the past reliability of publicly available eye witnesses,
> I think that I might wait for a little more information from known sources
> before I add my own pet hypothesis.
>
> Peter
>
My local source stated that the aircraft had a reduction drive, which failed
catastrophically, and left the engine still turning.

Sorry about the long delay, and no other usefull information available.

Peter