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2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:00:00 UTC
by Tad Eareckson
http://vimeo.com/68791399
2013/06/15 hang gliding tow release fail with parachute deployment
Lin Lyons - 2013/06/20 18:38 UTC

http://vimeo.com/68791399
Possibly the most spectacular publicly viewable hang gliding disaster video of all time, one rather low successful parachute deployment away from pretty much certain instantaneous death. 720 resolution, great image quality and lighting.

Discussed at:
http://www.kitestrings.org/post4586.html#p4586
Releases
http://www.hanggliding.org/viewtopic.php?t=29415
Holy Crap
http://ozreport.com/forum/viewtopic.php?t=32776
Can't release the tow line

Not discussed at:
http://www.hang-gliding.com
Mission Soaring Center

Mission student:
Linwood Lyons - 93088 - H2 - 2013/06/05 - Patrick Denevan - FL ST 360 FSL
Fifteen days (and maybe half a dozen flights?) into his Hang Two at the time. Age at time: 72, Wills Wing Falcon 4.

Incident precipitated by an improperly sequenced state-of-the-art three-string release:

Image:
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Went nuts and harvested 201 stills of the action which I've broken up into nine posts to make scrolling less painful.
---
Edit - 2015/03/05

Belatedly/Yesterday found a high resolution continuation of this recording at:

http://vimeo.com/69927112


and harvested an additional eighteen frames, the first a duplicate from the last one from the "2013/06/15 hang gliding tow release fail with parachute deployment" video, depicting the aftermath of the landing. I've rotated the images from the mostly upside down camera 180 to make them mostly topside up.

Also note that I've translated the frame numbers of the stills from the second video to make them consistent with what they'd be if the first video had encompassed the extra footage. Frame 00001 in the second video is the same as 22727 in the first and successive ones are calculated accordingly. On the off chance that anybody would find this useful the rotated stills appear in the second video as:

201-00001 - 202-00201 - 203-00422 - 204-00521 - 205-00701 - 206-00823 - 207-00905 - 208-00916 - 209-01026
210-01109 - 211-01122 - 212-01714 - 213-13109 - 214-13206 - 215-23607 - 216-24101 - 217-24207 - 218-24426

I was aware of:

http://www.youtube.com/watch?v=wwobNbDaXuA


posted the day of the incident showing the same footage plus two minutes and one second but it's 240 rez and I'd decided not to bother with it. The Vimeo version was posted three weeks and two days later.

So revised total: 219 (218 unique).
---
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement (This one - don't click if you can read this.)
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

Images displayed at 800x600. Use the URLs for full rez 960x720.

001-00001
- 001 - chronological order
--- 0 - minutes
-- 00 - seconds
-- 02 - frame (25 fps)

Hooked in, state-of-the-art towing equipment, an appropriate weak link with a finished length of 1.5 inches or less, no launch dolly to complicate things, wind checked, wings level and down out of the turbulent jet stream six inches above, nose down, ready to run like hell...

001-00001 - launch
http://farm9.staticflickr.com/8621/16673600031_18afe652a9_o.png
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Good. Now stomp your left foot to signal that you're good to go...

002-00123
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003-00204
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005-00610
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006-00803
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Note that we're hooked up at lower chest level and over the bar.

007-00905
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008-00927
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'Bout time to do a hook-in check...

009-01013 - hook in check
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Nailed it again.

010-01127
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Wing stabilized in the turbulent jet stream... After you've mastered the foot launch we'll move you on up to dollies.

011-01228
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There...

012-01314
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Now you have your hands on the CONTROL bar where the really skilled dolly launch pilots start out with them.

And now our tow angle is steep enough to have our state-of-the-art bridle in solid contact with the bar.

013-10109
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Now it's bending over the bar, trimming the glider nose low, reducing climb rate...

014-10122
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015-10200
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...catching on the grips as the glider moves laterally with respect to the pulley, winch, tow vehicle...

016-10219
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We COULD be using a Koch two stage but, since it started going up over thirty years ago, we couldn't refer to it as "state-of-the-art".

Time to disengage the state-of-the-art Birrenator - that clever device of Peter's which automatically blows the glider off tow if the nose pops up. Does an excellent job of taking the pilot out of the equation - even better than an Infallible Weak Link.

017-10801
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018-10806
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019-10811
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020-10819
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022-10823
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023-10827
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Got it! Those things have saved so many lives at Tres Pinos - it's nothing short of criminal that they're not used at ALL towing operations.

024-10900
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Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:00:36 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts (This one - don't click if you can read this.)
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

OK, time to start thinking about making the easy reach to our state-of-the-art release lanyard.

025-12318
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(Note Birrenator streaming back just below the keel.)

026-12323
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027-12401
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028-12404
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029-12406
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OK, now give it a good sharp tug...

030-12407
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031-12409
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No joy, huh?

032-12425
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Give it another shot...

033-12427
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034-12428
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035-12429
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036-12500
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Well...

037-12509
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Again...

038-12514
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Nope.

039-12524
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Again...

040-12527
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Nope.

041-12611
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Again...

042-12618
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Nope.

043-12626
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Try getting a wrap of it around your hand...

044-12700
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045-12709
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046-12714
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Nope.

047-12718
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048-12722
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Still nuthin', huh?

049-12920
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050-12922
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051-12929
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Just not happening. Well, you gave it your best.

052-13007
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Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:00:57 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity (This one - don't click if you can read this.)
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

Don't know what's going on here...

053-13016
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Maybe sees what the problem is.

054-13019
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Looks like he's clearing something with his right hand...

055-13114 - signal - arm
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056-13118
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Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:01:17 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston... (This one - don't click if you can read this.)
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

Houston...

063-13217 - signal - legs
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064-13304
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066-13315
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We have a problem.

067-13410
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075-13711
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Seriously Houston... Little help?

076-13716
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Got a hook knife? Anybody around down there got a Swiss army knife you can borrow for a second or two?

077-13724
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Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:01:39 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what? (This one - don't click if you can read this.)
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

Hands moving in to speed section of the speedbar.

078-13727
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081-13813
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082-13820 - hands out
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Hands returning to normal positions.

083-13823
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Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:01:55 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482[/url]
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh. (This one - don't click if you can read this.)
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

VERY steep tow angle. Bridle seriously bent over the control bar, no freakin' way to push out. Pitch attitude dropping accordingly.

089-14019
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Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:02:12 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly. (This one - don't click if you can read this.)
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

Tow angle starting to go aft, pitch attitude horizontal, things about to get really ugly.

097-14616
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Any thought of turning it back around and flying towards the pulley?

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Nice look at the release here.

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Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:02:27 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment (This one - don't click if you can read this.)
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

Might be a good time to start thinking about your parachute...

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As soon as you can. Your shadow's starting to get a bit sharp.

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Now toss it either between your side and tail wire or between your tail wires. You don't wanna risk cutting the bridle with a wire.

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You're wasting valuable time here.

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No, not in front of your nose wire. (Anybody know where I can get a "wince" smiley?)

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Check out the tow angle while we're waiting.

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Guess I don't need to tell you that if that thing doesn't open you're a statistic.

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Bag's off. Note where it is with respect to the horizon.

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Keep watching the bag.

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Check out the shadows. (Pretty good feel for how high he is.)

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Good job missing the keel with your head.

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See how high the deployment bag's gotten over the horizon? Gives ya a pretty good feel for just how fast we're still dropping.

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Parachute bridle has gotten about everything there is to get: nose wire, tow bridle (we're still under tension, remember), vario mount.

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If you come straight down from the center of the speed bar to the bottom edge of the frame and look carefully you can see the deployment bag about to vanish from view:

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Open the URL for full rez if necessary.

Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/02 23:02:49 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown (This one - don't click if you can read this.)
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath
http://www.kitestrings.org/post7491.html#p7491

Got a little squidding action going on with the parachute. Oh well, got another fifteen seconds of float time for things to work themselves out.

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This is the last frame in which we're still under tension. The towline is a thirtieth of a second away from being cut by a hose clamp holding the starboard wheel in position.

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You can see the recoil of the release and remaining towline section in the next seven frames:

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Port sidewise:

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just went slack. We're pretty much down.

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Re: 2013/06/15 - Tres Pinos - jammed release

Posted: 2015/03/04 01:42:06 UTC
by Tad Eareckson
Sequence:
01 - launch - hook-in check - proning out - bar contact - Birrenator disengagement
http://www.kitestrings.org/post7482.html#p7482
02 - release attempts
http://www.kitestrings.org/post7483.html#p7483
03 - mystery activity
http://www.kitestrings.org/post7484.html#p7484
04 - Houston...
http://www.kitestrings.org/post7485.html#p7485
05 - And now what?
http://www.kitestrings.org/post7486.html#p7486
06 - Uh-oh.
http://www.kitestrings.org/post7487.html#p7487
07 - Things get ugly.
http://www.kitestrings.org/post7488.html#p7488
08 - deployment
http://www.kitestrings.org/post7489.html#p7489
09 - descent - splashdown
http://www.kitestrings.org/post7490.html#p7490
10 - aftermath (This one - don't click if you can read this.)
http://www.kitestrings.org/post7491.html#p7491

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Check out the powerlines. (Caution: Objects in the wide angle lens are closer than they appear.)

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Great job, Mission Soaring Center. Looking forward to the write-up in the magazine.

Jump to top:
http://www.kitestrings.org/post7491.html#p7491