User Guide

GPS NAVIGATION
5-99190-00494-00 Rev. B
Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang
At minimum, an airway segment consists of two waypoints. The airway header is removed for any
transaction that would create an airway segment that is not at least two waypoints long. For example,
deleting UKW from the previous example creates ABI-BYP as an off-airway sequence ahead of a single V16
airway segment:
ABI
BYP
Airway – V16.PRX
PRX
What happens if a waypoint is deleted from within an airway and subsequently re-inserted it into the
original spot? The system does not restore the original airway arrangement. Continuing the previous
example, re-inserting UKW restores the original airway waypoint sequence, but the Airway header does not
get restored (the system sees UKW as just another off-airway waypoint that is being inserted):
ABI
UKW
BYP
Airway – V16.PRX
PRX
Airway “optional” waypoints can be inserted or deleted in airway segments without breaking the airway
into pieces. In addition, inserting or deleting a VNV ATK Offset waypoint is always allowed on an airway
without affect on the airway.
DIRECTIONAL AIRWAYS/INVERTING FLIGHT PLANS
Some airways have directional restrictions on all or part of the route. Airway “A2” in Europe has a directional
restriction over the whole route such that it can be flown only in the direction MTD-ABB-BNE-DEVAL.
Airway “UR975” in North Africa has more complicated directional restrictions within the list of airway
waypoints AMANO, VAKOR, LIBRO NELDA, DIRKA, GZO, KOSET and SARKI:
• Starting from AMANO, the airway can be flown only to LIBRO.
• Starting from SARKI, the airway can be flown only to LIBRO.
• Between NELDA and GZO, the airway can be flown in either direction.
The Airway Loading page will be smart about these directional considerations so that only correct airway
sequences can be inserted. If the pilot subsequently inverts that flight plan the system inverts the airway
waypoint sequence but remove all of the airway headers.
NOTE: In the US, airways that are “one-way” for specified hours of operation are not uncommon. These
airways will always be bi-directional in the G1000 database – this is an ARINC 424 limitation.