ICAO Flight Plan Box 13

[Gladiatoranc]

I've been reading about ICAO Flight Plan in Canada and how to fill it up properly and I am unsure of what time should go in the box 13.


According to Skybrary, it should be block off time.
Flight Plan Filling - SKYbrary Aviation Safety


My PPL Instructor always said box 13 was wheels off time, so now I am a bit confused.


Is there anyone who could shed some light on this?


Thanks

[peekay4]

It should be the estimated off-block time. See ICAO Doc 4444, Appendix 2.

[mustbeaboeing]

It used to be airborne, presumably 'wheels off' time in your original posting, but changed, over TWENTY years ago, to Estimated Off Blocks Time.

[Gladiatoranc]

Is there a default taxi+runup time that is usually used by ATC/FSS? For example if my block off time is 14:00 Zulu, would they assumed that I am airborne at a certain time if they no one hears from me?

[FragRad]

Each airfield has a taxi time allocated, presumably based on complexity and traffic levels. At my airfield (UK proceedures) it was 10 minutes, so if you filed for a 10:00 off blocks time on a regulated route, but were effectivly given 'no delay' a slot time of 10:10 would be issued.

[Gladiatoranc]

Thanks all for the answers!