VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Model Specific > RV-12/RV-12iS
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 01-19-2021, 05:51 AM
N661DJ N661DJ is offline
 
Join Date: Feb 2006
Location: Winter Haven
Posts: 339
Default Canopy opened

I recently had my tip up canopy come open in flight, forgot to close the top latch.
On take off, full power, 800', 120KIAS. I thought I had been hit by a sidewinder missile, the canopy came open about 8".
I immediately grabbed the handle and tried to close it, it would only come down about 4" or so, pulling as hard as I could actually lifting myself out of the seat.
I realized that I needed to pull the power back but only had 2 hands and was reluctant to let go of the canopy handle, didn't know what that might of done, concerned that the canopy might come off and the results would not be good. After a second or two, I decided that my only option was to let go of the stick and pull the power. BAD decision, the airplane did an immediate, hard, nose down and left turn, by the time I had reduced the power and got my hand back on the stick I was at 400' looking straight at the ground. Not a good place to be. After getting the airplane under control, I was able to successfully land on the intersecting runway, mid field from 400' or so altitude.

I am 78 years old been flying for 40 year, several thousand hours of time, mostly in RV's, aside from an incident with ice in a Mooney, this is as close as I have ever come.

I have since sold the airplane and have related this story to the new owner in hopes that he will not make the same mistake. DOUBLE CHECK THE CANOPY LATCH. In closing, This is a fantastic airplane, the problem was with the pilot
not the airplane.

Fly safe,
Dick
Reply With Quote
  #12  
Old 01-19-2021, 06:59 AM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
Posts: 5,742
Default They can smell fear . . .

Quote:
Originally Posted by abwaldal@gmail.com View Post
Having been a beekeeper for 50 years, they usually don't bother stinging you unless you tick them off with a cap swing.
Art
That's what my Granddaddy told me, as he brushed red wasps off a nest to harvest the grubs for fish bait while I observed in the opposite end of a 12' jon boat. I later had a chance to practice with honey bees. Weird sensation when they cover your hands and arms. Like when a canopy/door pops open, a good time to remain calm.

Yellow jackets and hornets, very territorial unless accepted. Another story.

I put screen inside my air vent scat (7) to avoid issues. Formed the screen over some PVC, inserted and secured with RTV.
__________________
Bill

RV-7
Lord Kelvin:
I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.
Reply With Quote
  #13  
Old 01-19-2021, 08:09 AM
Piper J3's Avatar
Piper J3 Piper J3 is online now
 
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 2,228
Default

Quote:
Originally Posted by BillL View Post
I put screen inside my air vent scat (7) to avoid issues. Formed the screen over some PVC, inserted and secured with RTV.
Plenty of openings elsewhere. Airplanes are parked for long periods of time. Suppose a nest gets build in the tail cone and then you close the canopy, yell "clear prop", and fire up the engine?
__________________
-
Jim Stricker
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 633

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
Reply With Quote
  #14  
Old 01-19-2021, 09:42 AM
seagull seagull is offline
 
Join Date: Dec 2019
Location: San Bernardino
Posts: 199
Default

Quote:
Originally Posted by N661DJ View Post
I recently had my tip up canopy come open in flight, forgot to close the top latch.
On take off, full power, 800', 120KIAS. I thought I had been hit by a sidewinder missile, the canopy came open about 8".
I immediately grabbed the handle and tried to close it, it would only come down about 4" or so, pulling as hard as I could actually lifting myself out of the seat.
I realized that I needed to pull the power back but only had 2 hands and was reluctant to let go of the canopy handle, didn't know what that might of done, concerned that the canopy might come off and the results would not be good. After a second or two, I decided that my only option was to let go of the stick and pull the power. BAD decision, the airplane did an immediate, hard, nose down and left turn, by the time I had reduced the power and got my hand back on the stick I was at 400' looking straight at the ground. Not a good place to be. After getting the airplane under control, I was able to successfully land on the intersecting runway, mid field from 400' or so altitude.
Was this a RV-12?
__________________
Live as if you were to die tomorrow. Learn as if you were to live forever.
-- Walt --
Reply With Quote
  #15  
Old 01-19-2021, 09:50 AM
DaleB's Avatar
DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
Posts: 2,280
Default

I have had my RV-12 canopy come partially open a couple of times. Pro tip: Remember to fully latch the canopy before takeoff to avoid feeling like an idiot.

In both cases, the canopy latch was under the roll bar, but not latched. The canopy popped open a couple of inches. I had zero success in getting it to close without actually landing the airplane and doing it on the ground.

When the canopy pops open, the frame spreads enough from the air pressure differential that the guide plates on the back end of the frame (C-1206) will not go into the slots in the canopy support rails (F-1254). You can't pull the canopy down enough to latch it. I didn't try extreme slow flight or a sudden pitch down, thinking that I'd rather land and latch the thing than run the risk of looking really stupid in an NTSB report.

You can bet I make it a point now to include a thorough check of the canopy latch state just before doing the run-up.
__________________
Dale

Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
Reply With Quote
  #16  
Old 01-19-2021, 10:03 AM
AeroDog AeroDog is offline
 
Join Date: Aug 2011
Location: New London, NC (near Charlotte), Longmont, CO
Posts: 283
Default

Quote:
Originally Posted by N661DJ View Post
I recently had my tip up canopy come open in flight, forgot to close the top latch.
On take off, full power, 800', 120KIAS. I thought I had been hit by a sidewinder missile, the canopy came open about 8".
I immediately grabbed the handle and tried to close it, it would only come down about 4" or so, pulling as hard as I could actually lifting myself out of the seat.
<snip>
I have since sold the airplane and have related this story to the new owner in hopes that he will not make the same mistake. DOUBLE CHECK THE CANOPY LATCH. In closing, This is a fantastic airplane, the problem was with the pilot
not the airplane.

Fly safe,
Dick
Which RV do you have. Obviously not a -12.

Jerre
__________________
Empennage, fuselage and wing kits complete
Canopy in progress, engine in the hangar.
RV-12 120593 N42KJ reserved
http://webpages.uncc.edu/~hill
http://jerre-hill.blogspot.com
=VAF= dues paid 2021
Reply With Quote
  #17  
Old 01-19-2021, 10:34 AM
JBPILOT JBPILOT is offline
 
Join Date: Nov 2007
Location: Jesup, Iowa
Posts: 1,668
Default RV-12 related - -

Had a friend take off without latching tip up RV-12. Panicked, and turned and landed the best he could downwind. Totaled plane and bruised himself a bunch. Best not to try to close it. Slow down and land as soon as possible.
__________________
John Bender
Flying RV-12 - Serial #120036
Paid in May ( 5-2020 )
Reply With Quote
  #18  
Old 01-19-2021, 10:45 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,915
Default

I usually open my canopy slightly on rollout (PHX gets hot!). I find that the latch wont unlatch unit the speed slows to a brisk walk, leading me to believe it would be a bear to pull down and relaunch in flight.
Reply With Quote
  #19  
Old 01-20-2021, 04:40 AM
N661DJ N661DJ is offline
 
Join Date: Feb 2006
Location: Winter Haven
Posts: 339
Default

Sorry about the confusion, The airplane was an RV-6, Tip Up canopy.
Dick
Reply With Quote
  #20  
Old 01-20-2021, 05:59 AM
mike newall's Avatar
mike newall mike newall is offline
 
Join Date: Jan 2005
Location: Yorkshire, England
Posts: 2,094
Default

A 12 canopy coming open in flight is not a big deal at all. If it was unintentional, there is a startle factor, but the aeroplane continues to fly stably.

During initial testing some years ago for a client, I was increasing the speed range and it popped open. Turned out that unbeknown to me, the client had turned the latch handle round as he thought it was stiff ! As you may know, the latch is asymmetric in length and what used to latch, no longer did.

The canopy floated about 6" up, so I slowed the aeroplane down and decided what to do next.

Now, if you have ever seen comics doing "The Balloon Dance", you realise you are short of a hand to control everything !

I could hold the canopy and the stick - I could hold the throttle and stick, but not all three. Factor in, it was an early model 12 with a sprung throttle, you see where my problem lay.

The main thing to remember is FLY THE AEROPLANE !

In the end, got it to left base, closed and twist locked the throttle and used stick and canopy hands and landed without incident.

Would I deliberately open a 12 canopy in flight - no - it is not designed to do that and if you get turbulence, a sudden jolt or anything that compromises the canopy bubble - your day just got really bad indeed !

The whole incident was fully reported both to our LAA and to Vans and subsequently, changes were made to the latch system on the 12 to include warning lights.
__________________
"I add a little excitement, a little spice to your lives, and all you do is complain!" - Q

Donated in 2020
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 01:00 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.