Jonker Sailplanes  Newsletter: DECEMBER 2016
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On the 12th of December 2006 history was made with the maiden flight of the JS1 Revelation. Ten years later we celebrated the anniversary of this memorable day by flying the JS3 Rapture for the first time. Completing the JS3 for this date seemed like an easy prospect for Jonker Sailplanes, but as months turned into days and days into hours, employees needed to work round the clock to ensure the glider was finished on time.
The maiden flight was carried out by Attie Jonker and the second flight by Uys. Both share their story:

Grand Prix World Final 2016

The 7th SGP World Final was hosted by Potchefstroom Airfield which is also the home airfield of Jonker Sailplanes. Great excitement rose as the world's top glider pilots gathered just around the corner of JS with the hope to claim the world champion title. 
A total of 18 pilots competed where 16 of the 18 pilots flew JS1's. Overall tricky weather, including rain and thunderstorms, meant a high level of skill was required from the pilots.
 The very first day of the championships delivered a surprise winner, with SGP Junior Champion Simon Schroeder taking nr 1 position the first day of his first SGP final. This win could probably be attributed to some bold choices from his side that paid off in the end.
From day three the weather started to improve and with the better gliding conditions the superior performance of the JS1 Evo above its older counterparts was evident with Evo taking 9 out of the top 10 places on the SGP final results. Although the weather was trying at times only one day needed to be cancelled and I think all the pilots will agree that it was a great competition overall.
The SGP 2016 Final World Champion
We asked Holger Karow, overall winner of the SGP 2016 Final, to share  his experience of the Grand Prix with us.
Congratulations to the following December and January birthday guys & girls working at the JS factory:

December 2016
- 15th Wynand Mogoiwa
- 23rd Danie Dahms
- 24th Lucky Kokwe,
         Maxwell Nkomo,
         Jeremia Thebe
- 26th Ronny Gumede
- 30th Rikus Theunissen

January 2017 
- 1st David Tselapedi,
       Patricia Dlomo
- 6th Michael Coelho,
       Trinity Kelehetswe
- 7th Phillip Boshoff
- 8th Attie Jonker
- 9th Boelie Cloete

Also congratulations to the following people in the extended JS family:

December 2016

- 1st  Peter Szabo
- 2nd Sébastien Infantolino
- 3rd Holger Karow,
       Richard A. Browne,
       Mannie McLauchlan,    
       Christa Hay
- 6th Bernd Schwehn, Ondrej Dupal
- 7th Sakkie Zuidmeer
- 9th Tim Markwald
- 10th Mike Young
- 12th Laurens Goudriaan
- 17th Mr G Dale
- 18th Dr Alistair Nunn
- 20th Henrik Bill
- 22nd Natalie Lübben, Primož Kolar
- 23rd Adam Czeladzki, Max Weber
- 26th Christophe Abadie
- 28th Cindy Coggins
- 29th Vladas Matüsa

January 2017
- 1st Erik Skov
- 3rd Max Heilmann
- 4th Jean-Denis Barrois
- 6th Maurits Dortu
- 7th Halasz Laszlo
- 8th Dr Gerd Wandel
- 10th Michel Soyez
- 11th Patrick Stouffs
- 16th Andy Sandhoefner
- 17th Jerzy Kolasiński
- 26th Matthew Scutter
- 27th Claudio Testa
- 29th Dr Bernd Hubka
- 31st Casey J. Lewis

114 Test Flight

 by AP Kotze
First Flight 1C 114
The flight test of serial number    1C-114 was for some reason more special than other maiden flights. I cannot attribute this to one thing in particular but rather a convergence of factors making the flight memorable.
The glider was flown in 21 m configuration with only the wingtips ballasted. This is the standard configuration for all maiden flights to ensure proper testing of the water system while reducing the risk for the flight as much as possible by not loading the glider to its MAUW on the first flight. The aerotow went smoothly and I released at approximately 600 m AGL into a beautiful 2 m thermal that turned into a 4.0 m closer to cloud base. During the climb most of the slow speed tests were completed and I ran along a cloud street completing medium speed and high speed tests before turning my attention to the engine. I cannot take any credit for climbing above cloud base using thermals only. I cheated by using the Jet Sustainer once close to cloud base, ensuring the engine parameters were within limits at altitude.
Cloud bases can be as high as 19000 ft in Southern Africa but the weather on the day was not exceptional, only reaching 2200 m AGL (11000 ft). This probably contributed to the amazing clouds and scenery as it seems that when the bases are lower the clouds tend to be a little closer together forming a very nice playground for someone dreaming of flying a “real jet”.
During the descend back to the runway the remaining high speed tests were completed followed by the standard low pass past the factory. The workers at the factory know that the number of low passes are inversely related to the number of snags found during the test flight and on this day there were plenty…...
Hope you enjoy your glider
Mr Eric Barnard
Jonker Sailplanes would like to express our appreciation to all our clients, employees and partners for your hardwork and support in 2016. We  wish you a wonderful festive season and a prosperous new year. 

JS Container - WGC

A great challenge was presented to the JS container packing crew as the normal requirements of 4 gliders was increased to 5 gliders. No challenge is too big for Gideon Coetzee, Willem Swart and their team, as this was successfully done with room to spare. A total of 5 gliders, two trailers, 3 extra sets of Evo tips and 1 extra set of 21m tips was packed. And if that is not enough a special shelf for  extra small items was built to utilise the open space above the gliders. Well done team!
JS Photo Competition
The Photo Competion winner for November is Robert Atkinson for his stunning picture taken of ZB flown by Mike Young during the SGP Final in Potchefstroom

34th World Gliding Championship

The 34th World Gliding Championships is drawing closer with less than a month left before the big events starts in Benalla Australia. A total of 32 JS1 Pilots will be competing in not only the 18m and Open Class categories but also in the 15m class category.
The South African Team will be presented by Uys, Attie, Pieter & Marcus Nouwens and  Oscar & Laurens Goudriaan. This is definitely going to be a memorable Championship for JS.
WGC 2017
CCopyright © 2016 Jonker Sailplanes PTY LTD, All rights reserved.

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Jonker Sailplanes PTY LTD · 1 Tiger Moth Street · Potchefstroom, North West 2531 · South Africa

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