Author Topic: Another Canopy Opened in Flight  (Read 1018 times)

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Offline True North

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Another Canopy Opened in Flight
« on: July 15, 2013, 07:54:06 AM »
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Cu Nim - the Glider Club at Black Diamond, Alberta  -  14 July

C-GAFO Damaged Not Airworthy
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The canopy came open early on tow. The pilot held the canopy down and
released at 500' but was unable to use spoilers because he was holding
down the canopy. He sideslipped to the runway, touched down 3 times
and initiated a ground loop to avoid hitting the fence
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York Soaring - the Glider Club at Arthur , Ont   _ 6 July

C-GQJZ  No Damage
From the tug pilot           .
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On tow, the glider canopy opened in flight at approx 100  agl ,  The glider made several serious deviations from standard  tow position,  The tug was subjected to several dangerous fluctuations of airspeed and attitude. The glider released at approx 500 agl,  at a downwind position for runway 14.  To avoid conflict, the tug continued to altitude. The glider was spotted in a field 2500 ft  west of the threshold of 14. The glider pilot was observe walking around the glider
             
« Last Edit: July 15, 2013, 08:04:56 AM by True North »
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Offline True North

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Re: Another Canopy Opened in Flight
« Reply #1 on: July 20, 2013, 07:35:07 AM »
CADORS

Quote
2013-07-18 While taking off, the Cu Nim Gliding Club LET L 33 SOLO (C-GAFO) for a local flight from Cu NIM, AB (CEH2), the canopy became unlatched. The pilot held it closed with one hand while flying a single circuit and was consequently unable to actuate spoilers for landing. After side slipping down the runway the aircraft bounced a couple of times and the pilot ground looped to avoid going through a fence. There was fuselage and wing damage.


UPDATE: TSB REPORT#A13W0097: The Cu Nim Gliding Club Let Kunovice L-33 Solo (C-GAFO) glider was being towed for a local flight at the Black Diamond / Cu Nim airstrip (CEH2). Shortly after lift off the pilot became aware of a buzzing sound emanating from the front cockpit area. The noise became pronounced by 100 feet above ground level (AGL) and canopy latch was visually checked and appeared full forward indicating the locked position. Air vent was cycled but no change in noise was detected. At approximately 300 feet AGL, the canopy opened to one third travel. The pilot caught the canopy and slammed it to the closed position. Unable to determine if the latch had failed, the canopy was held in the closed position while aborting the flight and returning to CEH2. Limited to flying with one hand, the flight spoilers would be unavailable for the descent and landing. The pilot conducted side slip maneuverers to lose altitude. Airspeed was above normal for the landing flare which resulted in several hard contacts with runway surface. Left rudder input was applied to avoid a fence beyond end of runway. The aircraft turned 90 degrees left and the right wing contacted and remained on the runway surface. The pilot was uninjured but the glider sustained substantial damage. The latch pins were found to be above the pin receivers
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Offline True North

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Re: Another Canopy Opened in Flight
« Reply #2 on: August 14, 2013, 10:30:22 AM »
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CADORS

Sunday, 11 Aug
  The pilot of a Sosa Gliding Club Pezetel SZD-50-3 (C-GCTE) on a local flight from Rockton, ON (CPT3) reported that the canopy of the glider ejected over a field. The aircraft landed safely with no injuries
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Offline True North

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Re: Another Canopy Opened in Flight
« Reply #3 on: February 25, 2014, 04:59:28 PM »
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Report from CuNim on the LET L 33 SOLO (C-GAFO) Writeoff
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L-33 Writeoff

Nothing unusual noted in the daily inspection. Aircraft washed and canopy
cleaned inside and out. Pre-take-off walk around and control checks were
nominal. The last item before signalling for take off was to close the canopy and
push the white latch lever forward. This I did, then closed the window vent.
Take off on tow behind C-GNJK from Runway 07 at approximately 13:39 pm in 3
to 4 kt wind with a very slight southerly x wind. Shortly after lift off a buzzing
noise started in the front area of the cockpit. This became pronounced by 100
feet. Canopy latch was fully forward as I checked this at that time. Tow plane
turned south at 100 feet then west at about 200 feet. At first I thought the
sound was something in the pitot tube or the vent in the front of the aircraft. I
closed the vent and opened it with no change. Spoilers were closed and locked.
At this point I was looking at options for aborting the flight, and then the canopy
came open at 300 feet, and I caught it at about 1/3 open and slammed it down. I
held it until we were at 500 feet then I let go of the stick for a second and
released. I called in a right hand circuit with canopy open incident and a no
spoiler landing on 07. I turned base and extended out until I was over the gravel
pit and then turned final. I side slipped as much as I could to lose height on final
but had a lot of airspeed when I flared and I wound up touching the runway
hard 3 times before settling down, but I still had a lot of speed on. The end of the
runway was approaching and the fence was up, so I turned left hard and the
right wing dug in, in a half ground loop. The glider turned 90 degrees and
stopped well short of the fence. Glider was facing north when it came to rest,
still on the runway.


Preventive Action Taken by Club
L-33 replaced with DG-303
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519 942-1775