


The only data you've requested that I've found in any significant amount is the "distance on the ground before takeoff," or what is more commonly referred to as the takeoff field length. It varies depending on the model of the aircraft you are looking at, how fully loaded it is, the altitude you are taking off from, and the weather conditions (especially temperature). Some typical numbers are listed below (all at maximum takeoff weight).
Aircraft  Takeoff Weight 
Takeoff Distance (sea level) 
Takeoff Distance (altitude of 3,000 ft or 915 m, hot day) 

ATR 42300 
36,740 lb 16,700 kg 
3,570 ft 1,090 m 
3,410 ft 1,040 m 
ATR 42320 
36,740 lb 16,700 kg 
3,950 ft 1,205 m 
4,050 ft 1,235 m 
ATR 42400 
36,460 lb 17,900 kg 
3,950 ft 1,205 m 
4,820 ft 1,470 m 
ATR 42500 
41,005 lb 18,600 kg 
3,820 ft 1,165 m 
4,605 ft 1,405 m 
Dash 8100A 
34,500 lb 15,650 kg 
3,100 ft 945 m 
 
Dash 8100B/200A/200B 
36,300 lb 16,465 kg 
3,260 ft 995 m 
 
Dash 8300A/300E 
41,105 lb 18,645 kg 
3,605 ft 1,100 m 
 
Dash 8300B 
43,000 lb 19,505 kg 
3,865 ft 1,180 m 
 
Dash 8400A 
61,730 lb 28,000 kg 
4,050 ft 1,235 m 
 
So let's compare models at approximately the same weight and takeoff conditions:
Aircraft  Takeoff Weight 
Takeoff Distance (sea level) 

ATR 42300 
36,740 lb 16,700 kg 
3,570 ft 1,090 m 
Dash 8100B 
36,300 lb 16,465 kg 
3,260 ft 995 m 
ATR 42400 
36,460 lb 17,900 kg 
3,950 ft 1,205 m 
Dash 8200A 
36,300 lb 16,465 kg 
3,260 ft 995 m 
ATR 42500 
41,005 lb 18,600 kg 
3,820 ft 1,165 m 
Dash 8300A 
41,105 lb 18,645 kg 
3,605 ft 1,100 m 
From this comparison, we see that the ATR 42 requires a greater takeoff distance under the same conditions. It therefore seems likely that the ATR 42 has a slower acceleration, but we would need more information on the velocity profile and takeoff time to determine exactly what that acceleration is.
Some other tidbits of information I've managed to track down include:
Sorry we couldn't be of more help. Good luck to you on your flight.
 answer by Jeff Scott, 21 July 2002
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