September 2019

Grand Central Fun Rally – 14 Sep 2019

By Rob Jonkers

This year’s SAPFA Fun navigation rally had its challenges in getting off the ground, the date initially set for the 7th September, where two other events entered the fray, that being the Children’s Flight and the SAAF Museum Airshow, and then the weather conspired to also be against us with foul weather on both the Friday and the Saturday.
In any event the date was moved by a week to the 14th September which coincided with the RV day and the Tedderfield Sling Fly-in, it seems everybody was getting into the spring feeling to hold events…. This Fun rally event is run in conjunction with Superior Pilot Services (SPS) who provide the facilities and sponsor a great breakfast at the Harvard, and an opportunity to allow their students to get to grips with rally flying.


The teams busy plotting the course from the task sheets.
For a number of years now Rob Jonkers planned and plotted the course for this event, catering for Open class and a Fun class, where the fun class introduces newbies to the sport. Entrants were planned to be around ten crews, with four from SPS and six from other airfields, and with the Protea teams still in Portugal having just completed the ANR World Championships were not available to take part. Eventually on the day only four teams could take part, thus it was a small field, with two in fun class and two in the Open class.

Most competitors arrived by 8.00 on Saturday morning to first enjoy the Harvard breakfast, thereafter briefing and plotting. The weather forecast looked promising with clear skies with 10+ kts wind later in the morning, which proved to become somewhat blustery closer to midday.

The route was planned to go out north, into familiar territory for the competitors as most of the legs were in their GF backyard. The start and finish points were just north of the N14 in the narrow Special Rules corridor between the Waterkloof & Lanseria airspace, and from there the route went out over the Hartebeespoort dam, across the Magalies ridge and into the scenic Crocodile river valley, then east across to Soshanguve and back across the ridge to the finish.


Matthew French & Mike Blackburn plotting their course.
From the GPS logger plot results, it could be seen the teams were struggling to slow down enough on the eastern & southern legs with many zig-zags being evident to counter the stronger wind at altitude.


The Apron of Grand Central with competitor aircraft.

There was one photo per leg that needed to be recognized, some of them were at least spotted by the crews, including a bonus photo which was one of those irresistible features (Stadium) that had to be found somewhere along the route, and which many crews did find in Attridgeville on the last leg.

Approaching the Crocodile Valley – Landscape still wintery.

After all the scores were tallied, first in Fun class was Matthew French with navigator Michael Blackburn in their very fast Mooney, second was father and son Jan and Max Coetzee in a C182. In this class the navigation accuracy allows 15 seconds at each gate before penalties are applied, one penalty per second.
In Open class in first place was Nick Christodoulou with navigator Andre Kluyts in a C172, and for this event a Route Planner class…. Rob Jonkers with his trusty navigator Martin Meyer in a C182, and being the route planner was expected to return with a perfect zero, but could not find the all the photos…., memory not that good it seems. In this class the navigation accuracy allows 2 seconds at each gate before penalties are applied, three penalties per second.


The navigation tracks – all seems fine until the eastern & southern legs.
This event was for sure enjoyed by all, getting an understanding of flying with more precision, especially in the slower flight regime, and having to deal with wind variation. Many thanks extended to SPS for making all the arrangements with Grand Central Management, and for the fantastic breakfast and for Franz Smit and Ashley Loynes for joining at the start and providing the teams with much needed water refreshments.


2nd FAI World Air Navigation Race Championship Santa Cruz

By Willie Bodenstein. Photos by Barbara Freibose and Jonty Esser

Air navigation racing is a relatively new aviation sport, with this year’s championship being only the second world championships. This year’s competition was organized by the Aeroclube Torres Vedras on behalf of the FAI and in cooperation with the Portuguese General Aviation Commission FPA (Portuguese Aeronautic Federation).
The opening ceremony featured the F-16s of the Portuguese Air Force as well as Yaks, Pitts and others. 

Santa Cruz Airfield (ICAO: LPSC) is located 60 km North of Lisbon, 15 Km of Torres Vedras City, just a few meters from the beach and village of Santa Cruz.

The World Air Navigation Race (WANR) is a knock-out competition where teams representing their respective countries fly in elimination heats against each other. Precision flying, navigation and landings define this competition. The pilots have to fly along predetermined narrow corridors with irregular shapes at a specific speed. No GPS or other navigation assistance allowed. Teams are only allowed to use a compass, clock and map. All aircraft must enter and exit the corridors at an exactly predetermined time and at the end, must land without engine thrust from downwind in a one-meter box marked on the runway, for no penalties. Crews are penalised for flying outside their corridors and for timing errors. Penalties are also awarded for the landing.

Forty-three crews from seventeen countries entered the competition that started on the 5th of September and concluded on 13the with a gala prize giving dinner held at the Quinta da Almiara Winery ten minutes from Torres Verdas.
Five teams from South Africa entered. 

Thys van der Merwe and Mary de Klerk 

Mauritz du Plessis and Sandi Goddard

Hans Schwebel and Ron Stirk

Jonty and Eugene Esser

Anthony and Pamela Russel

The weather throughout most of the championships boasted blustery winds, typical to coastal regions, but was not what the teams from South Africa were used too, as were the maps that they were issued for planning purposes. However, after the practice days, during which approximately 200 training flights were flown in which all competitors had the opportunity to practice navigation routes and precision landings, they were confident that they would do well.

Day one of the championships started with an early morning briefing as did all the other days.

Crews are handed their map with the printed corridor and are only given thirty minutes to plan their flight.

A typical daily task map.

Competitors have to fly along predetermined corridors with irregular shapes at a specific speed (normally 80 knots). The corridors are generated by sophisticated mapping software to ensure they are of equal length.


The South Africans hard at work planning their flights. 

Since aircraft was shared not only between the SA team members but also with members of the teams of other countries, start times were staggered to make provision for this. 
Images taken from the big screen of some of the tracks being flown.

GNSS loggers are used to log the flight track which provides accurate timing to the second. All flights could be tacked live and this brought a new dimension to the sport of air navigation races. In South Africa fellow racers and others were glued to their phones watching the races live.

The final day’s map showing the corridors in the shape of an aircraft that competitors had to fly in.
Instead of international rules, the championship was flown under local rules. Calculating the scores is a rather complicated system. For the navigation race scores only the first three routes were to be used to ensure that all crews had flown the same number of flights. The navigation score was then combined with the landing scores multiplied by ten which resulted in the final overall score.
First overall were B. Radomski and D. Lechowski of Poland followed by Y. Rabassay and M. Esteve of Spain with A. Scramm and A. Fuchs of France in third place.
Thys van der Merwe and Mary de Klerk finished in 12th place with Hans Schwebel and Ron Stirk in 15th place. Mauritz du Plessis and Sandy Goddard finished 17th, while father and son Jonty and sixteen-year-old Eugene Esser 21st and husband and wife Anthony and Pamela Russel 35th.
The landings were won by B. Radomski and D. Lechowski of Poland with M. Osset and D. Benito of Spain in 2nd place with Mauritz du Plessis and Sandy Goddard taking the bronze in 3rd.
Thys and Mary finished in 15th, the Essers 21st, Hans and Ron 24th and the Russels 39th.
Considering that no more than five air navigation races have been flown in South Africa over the last two years, the performance of our teams in stiff competition with teams that regularly flew this type of air racing was fantastic to say the least.
More races are being planned locally for next year and the idea is to promote air navigation races as a spectator sport.