Author Topic: Stallion picture  (Read 2460 times)

Doug Johnson

Stallion picture
« on: April 24, 2016, 08:31:35 PM »
Here is a picture of a Stallion noticed in background of one of the pages at the Beaver site  If the photo was taken in 2001 it almost has to be c/n 1 N550AA or c/n 001 N550HE.

Interesting that this Stallion is at Viking Air without paint in what looks like pretty good condition.

Anyone know if N550AA or N550HE was painted at Viking air?

The beaver site is interesting it's what is needed for the HELIO Site a page for each Helio. It would be a lot easier to update and add pictures to.

                    http://dhc-2.com/cn170.html

« Last Edit: April 24, 2016, 08:52:18 PM by Doug Johnson »
Doug

farmerflyer

Re: Stallion picture
« Reply #1 on: April 25, 2016, 08:25:55 AM »
Hi Doug...I am fascinated by the picture of the Stallion at Viking in Victoria in 2001.  In  October 1998, I happened across Stallion 001 N550HE in the then Canadian Regional Airlines hangar at YVR Vancouver BC.  It appeared to be in perfect condition except for a couple of missing instruments. I have no idea why it was there.  Since 1998 was before the age of digital photography for my, I took some detailed videotape with a Handycam which I transferred to DVD and then played on my computer and took iPhone photos off the computer screen, so the quality is poor and I have attached some. I enjoy the continuing stream of information on this site!...Richard

Doug Johnson

Re: Stallion picture
« Reply #2 on: April 25, 2016, 02:48:33 PM »
Kind of interesting where pictures of Helios Stallions show up, the picture of it in Oct '96 possibly a visit to Canada ?  Since Maytag was located in WA at that time.
And the photo at viking air photo in 2001 is most likely c/n 001 N550HE just before James Turrell painted it, in the cammo paint scheme or possibly it has a newer paint scheme.

In 92, N550HE dereg export to Helio Enterprises WA (David Maytag #1 Helio LLC, Partner) used for skydiving sold '96, Startruck LLC (James Turrell) AZ (Helio LLC, Partner 2nd Helio of 3), repainted with military desert camouflage paint scheme
Doug

Louis

Re: Stallion picture
« Reply #3 on: August 31, 2019, 06:40:40 PM »
Iphone photo from old slides.  I will have them scan to have quality

« Last Edit: August 31, 2019, 06:43:49 PM by Louis »

tailhook

Re: Stallion picture
« Reply #4 on: September 01, 2019, 12:12:56 PM »
Here are a couple pics after the Stallion was re-painted in an urban "camo" scheme. The Stallion may have succeeded had there been a civilian sale, but in the long term the program only got a boost from the "Credible Chase" USAF contract for 15 units being produced, slated for South Vietnam and ultimately ending up in Cambodia flown by Khmer AF pilots. Helio Aircraft Corp. headed up by Robert Kimnach, Jr. and Lynn Bollinger as Chairman of the Board realized that the all the eggs in the basket approach caused Helio into bankruptcy. General Aircraft Corp in El Segundo, CA sold all the assets, and it was over in 1974.

As for performance, I'll say the Porter was the crate the Stallion came in. Both flying Stallion's now have been upgraded to the PT6A-34 (750 SHP)

None of them fly anymore

tailhook

Re: Stallion picture
« Reply #5 on: September 01, 2019, 12:29:19 PM »
At Oshkosh 2005

Doug Johnson 1

Re: Stallion picture
« Reply #6 on: September 01, 2019, 01:22:11 PM »
Louis, I look forward to the Higher quality photos especially because I think they are photos of prototype no. 2 which I only have one photo during restoration.

I don't  think the pictures posted by Louis are of c/n 001 N550HE the controls and panel shown are of Helio prototype No. 1 or 2 but the cowling is the same as N550HE.

When prototype no. 2 was being restored by Patrick Taylor the cowling from Helio c/n 006 was used which is the same as c/n 001.

link to Helio c/n 001 http://flyhelio.com/smf/index.php?topic=1206.msg6039;topicseen#msg6039


link to prototype no.2 http://flyhelio.com/smf/index.php?topic=1205.msg4669;topicseen#msg4669

Below is a picture of the flight controls and panel of Helio c/n 001 N550HE, note Tail # on panel.


Picture of prototype no. 2 during restoration by Patrick Taylor

« Last Edit: September 01, 2019, 02:14:22 PM by Doug Johnson 1 »

tailhook

Re: Stallion picture
« Reply #7 on: September 02, 2019, 09:57:40 AM »
Helio N550HE was originally the third prototype N9550A and the "demonstrator" that Larry Montgomery flew on a Nation sales tour in 1970 after the Reading Air Show appearance. The left hand throttle quadrant is visible in the photo since it was slated for the military evaluation at Eglin AFB for "PAVE COIN" however it received certification in August 1969 as the World's fastest fixed gear, single-engine, STOL transport under Type Certificate A4EA. N9551A, and N9552A were the units sent to Florida for evaluation. The AU-24A Stallion program was actually cancelled twice, then revived by a USAF 4-star General that promised a 300 airplane order that never went anywhere. the 15 airplane order for the military was a unit cost of $292,000.00

The Helio HST-550A was flown to 282 MPH, 7.3 G's to meet combat status requirements slated for the South Vietnamese AF. However FAA certification pilots were scared of the STOL transport when flown to high AOA, power on past 35 degrees. That is when they insisted on the S.F.A.S. Stick Force Augmentation System (Stick-Shaker) with a value of 50 pounds below 40 KTAS. The FAF price from the factory was $138,900.00 bare bones airplane. So, someone with deep pockets could go to Southeast Asia and find the remaining fleet of AU-24's and upon inspection perhaps containerize, ship, and install the Honeywell/Airesearch TPE-331-10 and make a real machine out of it.

Not a fan of the PT6A for back country, bush utility, type ops.   

Doug Johnson 1

Re: Stallion picture
« Reply #8 on: September 02, 2019, 11:27:39 AM »
A little more with my interpretation.

N9550A c/n 001 was built as prototype c/n 3 military model AU-24A s/n HST-3 with monocoque fuselage aft of wing carry through spar to save weight but retained that designation just long enough for modifications (primarily replacement of yokes with a stick control system) to be approved by the military before it was placed in the assembly line and built without the nearly 300 modifications that the military required, because of lack of these c/n 001 wasn't purchased by the military.

There are some good magazine articles on flying the stallion here.
link to Helio c/n 001 http://flyhelio.com/smf/index.php?topic=1206.msg6039;topicseen#msg6039

Is the current  scheme on N550HE urban camo or desert camo? Look at this link and tell me, I chose desert camo.
https://www.businessinsider.com/camouflage-planes-2016-3
« Last Edit: September 02, 2019, 03:06:52 PM by Doug Johnson 1 »

tailhook

Re: Stallion picture
« Reply #9 on: September 02, 2019, 01:34:13 PM »
Definitely not "desert camo" IMHO, but it is a matter of debate in some way.

I have all those articles, brochures, and factory handouts, since the day they were printed. Those 300 military modifications to meet the qualification for escort gunship status, were necessitated by DOD officials for the program to get the green light. They tried in vain to break that airplane, couldn't do it.

The Stallion flies better with aft CG, the tuna tanks give a bit better roll rate, pitch authority is outstanding. Note the photo of Patrick standing in front of the Stallion with the X-wind gear engaged.

Stephen

Doug Johnson 1

Re: Stallion picture
« Reply #10 on: September 02, 2019, 04:02:18 PM »
I looked in Wikipedia for urban camo vehicles came up with this tank.

If N550AA had some black in the pattern it might look like Arctic Camo.
« Last Edit: September 02, 2019, 04:06:12 PM by Doug Johnson 1 »

JamesCaird

Re: Stallion picture
« Reply #11 on: September 03, 2019, 06:28:13 AM »
Lost Stallions in Cambodia-  Several years ago I was working in Thailand for a bit and travelling back and forth from USA.  I  had some time to surf the internet looking for interesting things.  I was able to get into the Thai Military inventories and was looking for Helios and then eventually wanted to get into Cambodia and have a look for the 5 unaccounted-for Helios from the Kymer AirForce.  The process started with inventories and maps and Google Earth and then start searching by car. Days were spent chasing leads and eventually one get to the phase where you are drawing maps with drawings of airplanes and trying to ask for sites with old airplanes in the jungle.  Ultimately I was directed to some sites by young boys on bicycles.  They are the ones who know.  In one place I found 41 L-19's in a field along with some helicopters , a Pilatus PC-6, (some damage) F-86 and others.  The L-19's had been in covered strorage until 2007.  Last time I was there (2015) they had been out in the sun and rain and were pretty much gone to hell.  In Laos I found one Helio and it was pretty good but there were "complications".  It is still there and I am afraid the elements by now have ruined it.  It too was undercover for a long time until the owner fell out of favor with the military.   In Cambodia I was not able to pick up the trail of the Stallions.  My thinking is that they were taken to China.  That's my latest. Cheers/ JC