# Why is this chart called a Short Field Effort Takeoff Ground Roll and not simply a Short Field Takeoff Ground Roll?

What does the word 'effort' mean in this context?

• Although I don't know what it means, this is likely an expression used in tests and military operations. There is also the maximum effort take-off which leads to the associated minimum field length for maximum effort take-off, and the maximum effort landing. Other categories of efforts will include tactical effort from what I understand. You may see these wordings used here. – mins Jan 3 '16 at 2:23
• Without the "Effort" the name of the test would imply that the test was conducted on an actual short field. – A. I. Breveleri Jan 3 '16 at 17:42
• That makes the most sense @A.I.Breveleri, thanks – jskypilot Jan 4 '16 at 1:22

This can also be figured out from the charts themselves. For Pressure altitude of 680', OAT of 8$^{\circ}C$, 8kt headwind and 3430 lb TOW, the normal TO roll is 920', while the short filed effort TO roll is only 800'. For the same specifications, the total distance over a 50' barrier using normal procedures is 1750', while using short field effort, it reduces to 1280' (All figures from the manual).