#THREE FIVE ZERO ZERO FULL#
If you are in direct, two-way, VHF/UHF voice communication with the pilot and the aircraft is in radar contact, you may specify an elapsed time interval restriction, in full minute increments only, without any reference to the UTC clock. The requirement to issue a time check must be disregarded if the clearance is issued via Controller Pilot Data Link Communications (CPDLC).ĮXCEPTION. If you are relaying through an authorized communications provider, such as New York Radio, San Francisco Radio, FSS, etc., advise the radio operator to issue the current time to the aircraft when the clearance is relayed. Specify a time restriction reference the UTC clock reading with a time check. Instructions to climb or descend including restrictions, as required. Under those conditions, a cruise clearance without a crossing restriction authorizes a pilot to determine the minimum IFR altitude as prescribed in 14 CFR Section 91.177 and descend to it at pilot discretion if it is lower than the altitude specified in the cruise clearance. When an aircraft is issued a cruise clearance to an airport which does not have a published instrument approach procedure, it is not possible to satisfy the requirement for a crossing altitude that will ensure terrain clearance until the aircraft reaches a fix, point, or route where altitude information is available to the pilot. The crossing altitude must assure IFR obstruction clearance to the point where the aircraft is established on a segment of a published route or instrument approach procedure. Military aircraft are operating on random routes and prior approval is obtained from the facility concerned.įor meteorological conditions, take this action only if you obtain prior approval from other affected positions or sectors within your facility and, if necessary, from the adjacent facility concerned.įor aircraft operational limitations, take this action only if the pilot informs you the available appropriate altitude exceeds the operational limitations of his/her aircraft and only after you obtain prior approval from other affected positions or sectors within your facility and, if necessary, from the adjacent facility concerned.įor mission requirements, take this action only when the aircraft is operating on an MTR. See paragraph 2-3-10, Control Symbology, for control abbreviations and symbols to be used in conjunction with this paragraph.įor traffic conditions, take this action only if one of the following conditions exists:Īircraft remain within a facility's area and prior approval is obtained from other affected positions or sectors or the operations are covered in a Facility Directive.Īircraft will proceed beyond the facility's area and specific operations and procedures permitting random altitude assignment are covered in a letter of agreement between the appropriate facilities.
Odd cardinal flight levels at intervals of 4,000 feet beginning with FL 430Īny cardinal altitude or flight level below FL 410 or any odd cardinal flight level above FL 410įL 270, FL 280, FL 290, FL 300, FL 310, FL 410, FL 430, FL 450Īltitude blocks as requested. Odd cardinal flight levels at intervals of 4,000 feet beginning with FL 450 Odd cardinal altitude or flight levels at intervals of 2,000 feetĮven cardinal altitude or flight levels at intervals of 2,000 feet