A friend of mine summed up what was in the text of Philippe RICCO's article on CAO 200:
First flight of the CAO 200 on January 30th 1939, flown by Pierre Nadot.
It reached 489 km/h after February 8 (unknown date) with a 860 PS Hispano-Suiza 12Y-31.
Towards July (unknown date) 545 km/h at 6.000 m with exhaust thrust giving an extra 16 km/h, indicating that the aircraft had been fine-tuned and possibly improved aerodynamically (new propeller?) and reached 530 kph without exhaust thrust.
The "spec sheet" gave the following details
446 km/h at SL (500 km/h with 1200 PS 12Y-51)
490 km/h at 2.000 m
535 km/h at 4.000 m
550 km/h at 4.500 m (resp. 610 km/h)
540 km/h at 6.000 m
500 km/h at 8.000 m
367 km/h at 9.300 m
2.000 m in 2 min 27 s
4.000 m in 4 min 50 s
4.500 m in 5 min 35 (5 min with 12Y-51)
6.000 m in 7 min 50 s
8.000 m in 13 min 45 s
9.300 m in 20 min 45 s
The accuracy of the figures given would indicate that they were genuinely measured, but possibly not with the armament as the pictures don't seem to show the cannon until the last trimester of 1939. The estimates given with the 12Y-51 are misleading as 1200 PS was only a takeoff setting which was actually reduced to 1100 PS in the end, while the actual altitude power was 1000 PS, giving a theoretical max of about 578 kph.
People who described CAO-1000's wind tunnel model say that it no longer had the small rudders, which were originally added because the main rudder had been found insufficient. This shows that CAO understood the issue and fixed the main rudder at some point.
In any case, I don't think this aircraft is worth discussing here as it was not a light fighter by any means.
