topdrop,
Thanks. That all makes sense. I used to enjoy the 'black art.'
HD, as regards easy, I'll riddle you this one. And no disrespect - you obviously mastered APP when Moses still hadn't checked out on SMC, or whatever 'ground' is called over your way.
Two aircraft:
Aircraft A is a BE200 inbound to destination from the boonies and tracking west to east from an NDB at FL200 - the track-length is huge (300nm) and there's nothing else out there for IFR nav; no DME at departure point and too far away for a signal from the destination. We are running on estimates only and the next estimate is abeam an NDB 50 minutes away. The track is close enough to a dead-set 090/270 west to east.
Aircraft B is a military jet on the ground with UHF only and an ADF- disregard TACAN - no sites out that way. He is gas-challenged, had to land (planned) at this intermediate spot, and needs to get to FL 280 to reach his destination 450.nm away with the mandatory reserve. His track, SSW to NNE (say 200/020), will cut across that of the BE200 about 150nm from his departure point. There are no comms on the ground; he's 250nm away from Centre with UHF only and you are not going to have contact before departure plus 30 (or thereabouts) in the cruise.
He must get to FL280 or it's a no go. The only contact from the pilot of the jet is a phone-call on the ground prior to departure for clearance - you won't hear from him again till he's in the cruise. Your calculations tell you that there is a definite conflict and that you must have a standard to get the jet through the level of the BE200 - no radar, no comms and you can't hold him down.
What clearance do you issue on the phone to safely get him above the BE200 before crossing? He has a CLIAS of 220kts (military trainer) - apart from that, you've got zip, except for a good overhead map, a china-graph and the procedural 30deg 'spanner.' (protractor).
Last edited by Howabout; 1st Jun 2013 at 15:22.