Welcome Guest. Sign in or Signup

2 Answers

RNAV Approach

Asked by: 2366 views Airspace, FAA Regulations


There is a note that says "GPS required" in the briefing section at the top of the chart.

What segment of this approach requires GPS ?

For the segment that requires GPS, why cannot a non-GPS RNAV navigator support the segment?

Thank you for the feedback.

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.

2 Answers

  1. Wes Beard on Feb 23, 2014

    Notice that this is a RNP approach and the aircraft is required to stay within 0.10NM 95% of the time.

    No RNAV system that does not rely on GPS has a RNP lower than 0.30NM. Notice, the second minima line shows 0.30NM so the FAA does not want a RNAV unit using DME-DME for its position report.

    From my understanding and John C. probably has better information, GPS is required for the whole procedure to +/- 1NM and 0.10NM or 0.30NM for the final approach segment which also requires GPS.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes

  2. Dan Chitty on Feb 24, 2014

    Thank you Wes.

    I used KCRQ as an example but as I look further at other airports with RNP as well as GLS approaches, I see the GPS Required note in the briefing section for all RNAV RNP and GLS approaches. Lets see what John says as you mention above.

    Thank you again for the feedback.

    0 Votes Thumb up 0 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.