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• The To/From indicator on the HSI flips momentarily to indicate that the midpoint of the turn has been crossed.
Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 190-00494-02 Rev. B
SYSTEM
OVERVIEW
FLIGHT
AUDIO PANEL EICAS INSTRUMENTS
& CNS
FLIGHT
MANAGEMENT
HAZARD
ADDITIONAL AFCS AVOIDANCE
INDEX APPENDICES FEATURES 522
Appendix D
When does the CDI scale change?
• When set to ‘Auto’ (default), the GPS CDI scale automatically adjusts to the desired limits based upon the current phase of flight.
• When a departure procedure is activated, the CDI is scaled for departure (0.3 nm).
• The system switches from departure to terminal CDI scaling (1.0 nm) under the following conditions:
- The next leg in the departure procedure is not aligned with the departure runway
- The next leg in the departure procedure is not a CA, CD, CF, CI, CR, DF, FA, FC, FD, FM, IF, or TF leg (see Glossary for leg type definitions)
- After any leg in the departure procedure that is not a CA or FA leg
• At 30 nm from the departure airport the enroute phase of flight is automatically entered and CDI scaling changes to 2.0 nm over a distance of 1.0 nm, except under the following conditions:
- When navigating with an active departure procedure, the flight phase and CDI scale will not change until the aircraft arrives at the last departure waypoint (if more than 30 nm from the departure airport) or the leg after the last departure waypoint has been activated or a direct-to waypoint is activated.
• If after completing the departure procedure the nearest airport is more than 200 nm away from the aircraft and the approach procedure has not yet commenced, the CDI is scaled for oceanic flight (2.0 nm).
• Within 31 nm of the destination airport (terminal area), the CDI scale gradually ramps down from 2.0 nm to 1.0 nm over a distance of 1.0 nm, except under the following conditions:
- When navigating with an active arrival route, the flight phase and CDI scale will not change until the aircraft arrives at the first waypoint in the arrive route (if within 31 nm from the destination airport).
• During approach, the CDI scale ramps down even further. This transition normally occurs within 2.0 nm of the Final Approach Fix (FAF). The CDI switches to approach scaling automatically once the approach procedure becomes active or if Vectors-To-Final (VTF) are selected.
- If the active waypoint is the FAF, the ground track and the bearing to the FAF must be within 45° of the final approach segment course.
- If the active waypoint is part of the missed approach procedure, the active leg and the preceding missed approach legs must be aligned within 3° of the final approach segment course and the aircraft position must be prior to the turn initiation point.
• When a missed approach is activated, the CDI scale changes to 0.3 nm.
• The system automatically switches back to terminal mode under the following conditions:
- If the next leg in the missed approach procedure is not aligned with the final approach path
- If the next leg in the missed approach procedure is not a CA, CD, CF, CI, CR, DF, FA, FC, FD, FM, IF, or TF leg
- After any leg in the missed approach procedure that is not a CA or FA leg
190-00494-02 Rev. B Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS EICAS AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE AFCS ADDITIONAL
FEATURES APPENDICES INDEX
523
Appendix D
Why does the HSI not respond like a VORVOR when OBS mode is active?
Unlike a VOR, the CDI scale used on GPS equipment is based on the crosstrack distance to the desired course, not on the angular relationship to the destination. Therefore, the CDI deflection on the GPS is constant regardless of the distance to the destination and does not become less sensitive when further away from the destination.
What is the correct missed apppproach procedudure? How is the missed apppproach holding point selected?
To comply with TSO specifications, the G1000 does not automatically sequence past the MAP. The first waypoint in the missed approach procedure becomes the active waypoint when the SUSP Softkey is selected after crossing the MAP. All published missed approach procedures must be followed, as indicated on the approach plate.
To execute the missed approach procedure prior to the MAP (not recommended), select the Active Flight Plan Page and use the ACT LEG Softkey to activate the missed approach portion of the procedure.
A
f
ter a missed apppproach, how can the same apppproach be re-selected? How can a new apppproach be activated? NOTE: Do not attempt to reactivate the current approach prior to crossing the missed approach point (MAP). If an attempt to do so is made, an alert message “Are you sure you want to discontinue the current approach?” appears. The G1000 directs the pilot back to the transition waypoint and does not take into consideration any missed approach procedures, if the current approach is reactivated.
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Cessna Citation Mustang Pilot’Guide 2(83)
