Hi everyone
Thanks for the replies.
niknak: When does the acft depart?
We, in our training enviroment record the seconds when the first acft rotates. The second acft can then start its roll after the 120 or 180 seconds.
This means the the separation is always a bit bit greater than required which could mean you are operating at less than 100% efficiecy.
There does not seem to be a laid down method of application??
HD: Times are usually recorded using the 30 second point as the minute changeover.??? Does this mean some countries record the current minute?
Cheers