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New RNAV Departure Procedures Implemented at Bozeman/Gallatin Field
August 2, 2012
To increase efficiency at Bozeman Yellowstone International Airport (BZN), multiple procedures such as the BOBKT and TEERX RNAV Departure Procedures (DPs) have been developed. The next step in this process is to assign those procedures to all aircraft that are capable of flying them. Over the past four weeks it has been noted that 97.6 percent of the 1,281 IFR aircraft that departed BZN were capable of flying the new RNAV procedures. These new Adapted Departure Routes (ADR) and Adapted Departure Arrival Routes (ADAR) are active as of Thursday, July 26, 2012.
Please note that the implementation and refinement of these procedures will be a continual process. If you notice areas where improvements can be made, please contact Wayne Vandegraaff at (801) 320-2530, fax (801) 320-2404 or firstname.lastname@example.org
Adapted Departure Route
An Adapted Departure Route (ADR) is a specific departure route from an airport or terminal area to an en route point where there is no further need for flow control. It may be included in a departure procedure (DP) or a preferred IFR Route.
If departing aircraft file a direct route out of BZN, or an airway that includes HIA, BIL, BOY, or DBS, one of the new ADRs will be applied and the aircraft will be assigned the BOBKT, the TEERX or the WHITEHALL THREE departure. All three of these departures route aircraft away from the BZN airport, so the option of using successive arrival/departure rules – such as the 3 minute rule - becomes available for the first time at BZN.
Adapted Departure and Arrival Route
An Adapted Departure and Arrival Route (ADAR) is a route between two terminals. ADARs are not synonymous with preferred IFR Routes but may be listed as such since they accomplish a similar purpose.
Several ADARs were adapted to standardize routings between BZN and the nearby destinations of BIL, HLN, GTF, and MSO.
|GTF||RNAV||BZN TEERX1 HIA V21 GTF|
|GTF||Non-RNAV||BZN HIA3 HIA V21 GTF|
|HLN||RNAV||BZN TEERX1 HIA V21 HLN|
|HLN||Non-RNAV||BZN HIA3 HIA V21 HLN|
|MSO||RNAV||BZN TEERX1 HIA V86 MSO|
|MSO||Non-RNAV||BZN HIA3 HIA V86 MSO|
|BIL||RNAV||BZN BOBKT1 BIL|
|BIL||Non-RNAV||BZN HIA3 HIA V86 BIL|
WHITEHALL THREE DP (HIA3)
The WHITEHALL THREE DP is the ‘catch-all’ for aircraft not capable of RNAV procedures, regardless of destination. In some cases, this means the departure will actually start the flight headed westbound when the destination is to the east. Aircraft can expect more expeditious routes and vectors to a point on the route of flight when the aircraft is above MIAs and clear of traffic.
Assignment of these ADRs is contingent on the proper filing of the flight plan.