Welcome Guest. Sign in or Signup

1 Answers

HSI on a G1000

Asked by: 3336 views Aircraft Systems, Flight Instructor, Instrument Rating

When using a VOR or ILS in a G1000 equiped airplane, how many degrees does each dot on the HSI scale represent?

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

1 Answers

  1. John D. Collins on Jul 31, 2013

    On the G1000 implementation I am familiar with, there are two dots on either side of the course center. A VOR full scale deflection is 10 degrees, so each dot is 5 degrees. The localizer antenna array is located off the departure end of the runway for an ILS. For an ILS, the course width varies between 3 degrees and 6 degrees, depending on the length of the runway because the width of the ILS course is set at the threshold to be a fixed 700 feet. At 3 degrees the full scale deflection is +/- 1.5 degrees (for a 6 degree ILS it would be +/- 3 degrees) and each dot is half that, or .75 degrees on the low side and 1.5 degrees on the high side.

    +1 Votes Thumb up 1 Votes Thumb down 0 Votes

The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.