dragon Posted April 18, 2003 Share Posted April 18, 2003 Followed a guy coming off the ocean at .80 a couple days ago, part way through Quebec the controller asking for a speed, " ah, .82 " busted, and violated as well. beware. RAC 11.8.2.c DOMESTIC CLEARANCES NAT WESTBOUND TRAFFIC Westbound turbojet aircraft which have preceded across the north Atlantic and have entered CDA shall maintain the last mach number assigned by ATC: unless, approval is obtained from ATC to make a change, or until the pilot receives an initial descent clearance approaching destination. MACH NUMBER Clearances to turbojet aircraft equipped with a mach meter may include an appropriate mach number. If the mach number cannot be adhered to, ATC is to be informed when the clearance is issued. Once accepted, shall be adhered to within .01 MACH, unless ATC approval is obtained to make the change. if a temporary in mach number is necessary [ie turbulence] ATC is to be notified as soon as possible.] Link to comment Share on other sites More sharing options...
cp fa Posted April 22, 2003 Share Posted April 22, 2003 A good point....Normally the assigned ocean mach speed and the econ speed at coast in are very close and no action is taken.. As the flight progresses west the econ speed of course continues to increase as the airplane becomes lighter, and will in some cases, exceed the ATC tolerance, thus generating the need to advise them. Cheers Dave Link to comment Share on other sites More sharing options...
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