Double Release Failure on Tow

I have done three of them (simulated, not real failures). Stay in high tow position and these are dead easy and fun. The probability of an actual occurrence? Whatever number is closest to zero.
Paul
ZZ

On 4/9/2016 8:12 AM, ZZ wrote:
I have done three of them (simulated, not real failures). Stay in high tow
position and these are dead easy and fun. The probability of an actual
occurrence? Whatever number is closest to zero. Paul ZZ


Another topic worthy of more extended conversation???

Bruce Miller, the (now long) late glider FBO at Boulder, CO, used to regularly
demonstrate - and perhaps teach; I was never certain - landing on tow (one
natural outcome of a double release failure). His preferred approach was for
the glider (2-32) to land first, from low tow position, wait for the tug to
land, and then for the glider to do the (bulk of?) the braking. It usually
never took more than ~3/4 of the ~4,000' paved/gravel, 5300'msl, strip, with
two in the glider.

Did your simulated double release failures include landings? If so, could you
elaborate on the techniques used? Inquiring minds and all that...

Thanks!

Bob W.

I think we need to start practicing a lot more "possible" scenarios like actual bird strikes, landing with flat tires, actual fires in the cockpit, and take offs and landings while both pilots are testing or talking on their cell phones...

Boggs

Don't remember the details, but there was a double release failure at Calistoga, years ago. Sailplane couldn't release, so tow pilot pulled the gilitene (Sp?) but it had rusted and didn't sever the line. Next he (tow pilot), broke the mirror and took a piece of it and tried to reach around behind and cut that puppy manually!
I seem to remember the gyrations of the un-guided tow plane were so severe that the tow rope finally just broke its self.
Anyone remember more details on this one?
JJ

On Sunday, April 10, 2016 at 2:30:08 PM UTC-7, wrote:
Don't remember the details, but there was a double release failure at Calistoga, years ago. Sailplane couldn't release, so tow pilot pulled the gilitene (Sp?) but it had rusted and didn't sever the line. Next he (tow pilot), broke the mirror and took a piece of it and tried to reach around behind and cut that puppy manually!
I seem to remember the gyrations of the un-guided tow plane were so severe that the tow rope finally just broke its self.
Anyone remember more details on this one?
JJ

We checked our guillotine and found the cable frozen in the housing.

On Sunday, March 27, 2016 at 8:38:16 PM UTC-4, Piet Barber wrote:
I'm sure a few people here have practiced it... but I really need to know:

Has it ever actually happened? I mean, has there ever been a bona fide certified, verified example of both release hooks failing in flight? The glider can't release, the glider gives the signal, the tow plane can't release, gives the signal; both aircraft land in formation.

Has anybody ever heard of this actually happening? If so, how did it turn out? What was the proficiency level of the pilots who did this? Did anything get scratched or bent?

Best way for most pilots is to do a Slack line and recovery.....and,,,The rope breaks...