I'll try to shed some light here...
In 1916 the Belgian Aviation Militaire found it very difficult to replace its destroyed Nieuport aircraft... France wasn't to enthousiastic to sell their fighters to Belgium as there was some political struggle going on: the French Generals were desperately trying to annex the Belgian army but our King Albert I proved to be a hurdle they were never able to take.
This left the Belgian Aviation Militaire in dire need for new aircraft so they send Commandant Tournay on a scouting trip to purchase fighter aircraft. I guess much to the man's surprise, he was able to buy 30 Ponniers M1 for a scratch... He ought to have been suspicious about that but I guess he might have been so happy to have found aircraft that this clouded his better judgement.
What he didn't know was that the ponnier nearly killed Charles Nungesser when he took one out for a test-flight : the aircraft stalled and fell down like a brich breaking nearly every bone in Nungeser's body.
The joystick went straight through his jaw , dislocating it but... he lived.
After this incident every French pilot coldly refused to even enter the Ponnier which left the French with an aircraft they couldn't use. So when Tournay came looking for aircraft, not knowing this story he really was an easy target...it costed him dearly afterwards.
Jan Olieslagers did know about Nungesser and he went on a one-man crusade against the Ponnier and publicly doubted Tournay's sanity...which led to sanctions of course... But Jan held his ground and the Belgian pilots followed him.
The few Ponniers that flew only did so after substantial changes, such as an entire new rudder ( and I believe a change of engine...but I'm not sure of that
).
The Ponnier was a small and short aircraft with short wings of equal dimensions. Because of its small wing surface and underpowered 80pk Le Rhone engine it was easily stalled.
When on june 18 1916 Captain Jaquet crashed an "upgraded" Ponnier this meant the end of it : those that were left had their lower wings stripped and were send to the pilot training school in Etampes where students used them to learn how to taxi.
This is in short the story about the Ponnier...I'm afraid that there are no technical specs to be found...at least I didn't find them...
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