Welcome Guest. Sign in or Signup

2 Answers

Un-timed LOC approach

Asked by: 2031 views ,
Instrument Rating

 First I would agree with may other with if one component of the approach fail unexpectedly why would you trust that other components are stable.

Second, I am looking at the “ILS or LOC RWY 25” at Jamestown, NY (JHW) the current  plate provides no timing, and makes no mention of any other method to identify the MAP. I checked back in a 2014 TPP, and at that time, timing was provided. The minimum, and a few other small changes have been made on the plate, but nothing explains how to id the MAP, other than fly past the LOC.

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. John D Collins on Aug 28, 2018

    The Jeppesen chart has a timing table. DME can be used or the timing table. The FAA chart is missing the timing table and is probably in error. You can report this to the faa at https://www.faa.gov/air_traffic/flight_info/aeronav/chart_discrepancies/

    +1 Votes Thumb up 1 Votes Thumb down 0 Votes



  2. Mark Kolber on Sep 03, 2018

    I agree with John that it is likely a charting error. But I will point out that there is “nothing” that explains how to ID the MAP. There are three.

    1. 0.2 DME
    2. The MAP waypoint if you load the approach in an IFR certified GPS.
    3. 6.4 NM from the FAF at your groundspeed (if you want to do the math). The timing table is not regulatory; if is a convenience provided by the chart publisher based on the FAF to MAP distance. If you compare the Jepp and FAA timing tables for an approach, you’ll see they are different in terms of the groundspeeds they calculate for you.

    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.