IFR departures will be dealt with in accordance with the nature of the flight. A pilot joining airways should pass their estimate for the join point when requesting start.
Due to the procedural nature of the Air Traffic Service, an initial call is requested 10 minutes flying time from the initial approach fix in order to ensure correct sequencing and separation can be achieved. Cranfield currently operates a mixture of precision and non-precision approaches.
Cranfield instrument approach charts are available on the AIP.