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#11
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I have noticed several occurrences with either the spoilers, the gear or a
combination of those. Came up with a nice solution for our new Ventus 2cxT. Have a look at http://home.wxs.nl/~kpt9/gear.htm Karel Termaat NL "Janos Bauer" schreef in bericht ... My condolences... Just another spoiler accident: Last month (08.08) an IS29D2 preparing for xc took off with deployed spoilers. The tow pilot noticed it and tried to inform the pilot (there was no radio). The pilot didn't closed the spoilers and at the end the glider was released right over the airport. The pilot realized the higher than expected sink rate and tried to glide to the nearest thermal where other gliders were circling. At half distance he realized that he couldn't make it. Still not aware about the opened spoilers!! Turned back to the airport and because of the reduced l/d hit some buildings and finally landed on a road. There was no traffic on this road at that time... /Janos |
#12
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From the NTSB report:
"On September 19, 2003, at 1503 Pacific daylight time, a Schempp-Hirth Standard Cirrus glider, N71DA, collided with an electric transmission guy wire about 1.6 miles east of the Lone Pine Airport, Lone Pine, California. The glider was owned by the pilot and operating under the provisions of 14 CFR Part 91. The private pilot received fatal injuries, and the glider was substantially damaged. Visual meteorological conditions prevailed, and no flight plan had been filed. The local area personal flight originated about 1440 from Lone Pine Airport via a tow plane. The tow plane pilot reported that he observed a spoiler or spoilers during the initial tow. The tow pilot alerted the pilot by radio by stating "spoilers spoilers" glider on tow, with no response. The tow pilot gave the glider pilot a rudder wag as an additional signal that the spoilers were deployed rather than being stowed. Subsequently, the glider pilot stated on radio that he had a spoiler problem. The glider pilot released from the tow about 3,400 feet above ground level, and 3.5 miles east of the airport. The tow pilot stated on the radio that he would take the dirt runway, allowing the glider to land on the paved surface. Post accident examination of the glider revealed that the spoilers had not been connected prior to flight." No mention if a PCC was done, and if so, why the disconnect wasn't noticed. Also it is not clear how the glider lost over 3000 feet traveling only 2 miles (3:1 glide ratio) even with spoilers fully deployed. Hopefully someone can tell us more so we can all learn. Ramy The description I have heard is slightly different. During takeoff in a standard Cirrus, one spoiler deployed then shortly the other. (No report on weather either spoiler was found connected during post crash insp). During the tow the tow pilot was wagging his rudder and attempting to contact the glider by radio with no response (although the glider and tow plane had communicated prior to takeoff). When the tow plane initiated a turn back toward the airport, the glider pilot released (altitude at that time unreported). After the glider released he was heard on the radio stating that he had a spoiler problem. As reported the gliders wing tip struck a smaller lightning cable at the top of high tension poles and impacted below. It would be reasonable to assume that any of the following could have provided the the opportunity to break the chain of events that led to this accident. 1 the spoilers were not connected properly during assembly 2 if a positive control check was done, spoilers were missed 3 during pre takeoff check, apparently spoilers were not visually checked for full deployment travel and locking 4 the glider released during tow prior to being brought back over the runway with plenty of altitude for dealing with the problem. Our condolances go out to the family. And we mean no disrespect by attempting to understand and hopefully prevent similar accidents in the future. Soarin |
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