Welcome Guest. Sign in or Signup

2 Answers

Circling approach using vertical guidance

Asked by: 3084 views , , ,
FAA Regulations, Instrument Rating

Is it okay to get down to circling MDA while following the GS if doing a ILS/LPV circling approach?

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. Best Answer


    John D Collins on Mar 13, 2015

    A circling approach requires a NPA procedure. If the approach has vertical guidance such as an ILS or LPV, but there is not a NPA procedure on the same chart, that is for an ILS there is not a localizer only option or for an LPV there is not an LNAV option, then circling minimums are not charted, If both a vertically guided procedure and an NPA procedure are charted and circling minimums are provided, the vertical guidance can be used as advisory information as long as all of the NPA minimum altitudes are complied with. There are cases of vertically guided approaches, particularly LNAV/VNAV whose DA is above the MDA of the circling minimums. With a DA, an altitude on the GS establishes the missed approach point, whereas with a NPA it is usually at the threshold or a waypoint. The threshold or waypoint for the MAP on a circling procedure is past the point of the MAP on the vertically guided procedure.

    So as long as you treat the GS as advisory only information and don’t bust any NPA procedure minimums, it is OK to follow the GS. Bottom line, circling is not done from a vertically guided procedure.

    +2 Votes Thumb up 2 Votes Thumb down 0 Votes



  2. Drew on Mar 13, 2015

    Thank you for your thorough answer.

    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.