Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: Amelia Earhart Report
    From: Keith Pickering
    Date: 2011 Mar 15, 01:36 -0700

    I agree. The most obvious answer is:

    1. The plan was to approach Howland at night (for celestial nav purposes) and
    land at dawn.
    2. Headwinds delayed the plane. NOAA/ERSL's 20th century reanalysis for that day
    puts zonal winds at 13 to 14 knots over most of the route. Thus the sun rose
    hours before Howland was reached, eliminating most close-in celestial nav -- and
    eating up the fuel reserve too.
    3. After sunrise, it would make sense that Noonan took sunlines. This would
    allow them to know if they had flown far enough to reach Howland, but not
    whether they were north or south of the island.
    4. Earhart's last message was that they were on a 157-337 line flying north and
    south. Clearly a sunline, since it is at right angles to the solar azimuth. So
    Noonan's sunline had finally reached Howland, but the island was not visible.
    They were flying along this line (probably in the wrong direction) searching for
    Howland when their fuel ran out shortly afterward.
    5. They were less than 50 miles from Howland (good radio reception implies
    line-of-sight at 1000 feet) but farther than 6 miles (or they would have been
    heard audibly). If you want to look for wreckage on the ocean floor, that's
    where to look.

    Keith Pickering

    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site