NavList:

   

Reply

Gary:

Thanks for jogging my memory by posting something Earhart related - I'd
meant to reply to this earlier, but it fell through the cracks...

> Another disagreement with him is that he marks out 90 degrees  of of the
> circle as having reduced visibility due to the glare of the sun. I
> measured the glare on the sea at sunset with my sextant and it is only
> 5 degrees wide.

I'll defer to your expertise on this one, since you have more experience
with overwater flights than I do - but my big question would be why they
planned to arrive at Howland in the early-morning hours when glare would
definitely be a problem while trying to locate a tiny speck of land in the
vast ocean.

Just seems to be another in a long series of mistakes, oversights,
miscommunications, etc. that led up to the accident. As Capt. Laurance F.
Safford (who was also responsible for the Mid-Pacific Strategic Direction
Finding Net, and the decoding of the Japanese PURPLE cipher) put it in his
analysis of the Earhart flight during the 1970s: "Poor planning, worse
execution."

http://en.wikipedia.org/wiki/Earhart

--
GregR


----- Original Message -----
From: Gary LaPook
To: NavList@fer3.com
Sent: Sunday, March 06, 2011 6:40 PM
Subject: [NavList] Re: Amelia Earhart Report


Long's book is the best one out there. He used the same methodology that I
did. I have some differences with him. He places the uncertainty of airborne
celestial LOPs at +/- 15 NM and I use +/- 7 NM which is in keeping with all
the text books and also with the Federal Aviation Regulation requirement.
His assumption ends with a larger area of uncertainty than mine. I also
disagree with his explanation of why they didn't land at Dakar, see my posts
last month about this.

http://www.fer3.com/arc/m2.aspx?i=115631&y=201102

http://www.fer3.com/arc/m2.aspx?i=115635&y=201102

http://www.fer3.com/arc/m2.aspx?i=115642&y=201102

Another disagreement with him is that he marks out 90 degrees  of of the
circle as having reduced visibility due to the glare of the sun. I measured
the glare on the sea at sunset with my sextant and it is only 5 degrees
wide.

As you can see, these are minor disagreements and don't change the
conclusions much.


Regarding the experimental high frequency DF equipment on Howland, there are
no documents showing that Earhart knew of its existence, it appears that it
was a last minute addition by Mr. Black when sailing out on the Itasca. You
would think that if she did know about a plan to have it installed on
Howland that in one of her radiograms to Itasca she would have asked to have
its installation confirmed before relying on it yet there is no mention of
it in her messages.


gl



--- On Sun, 3/6/11, Greg R.  wrote:


From: Greg R. 
Subject: [NavList] Re: Amelia Earhart Report
To: NavList@fer3.com
Date: Sunday, March 6, 2011, 4:12 PM


> Looks like it was a turtle bone that TIGHAR found Nikumororo.

LOL! What a surprise (not...). Though it probably still won't stop Ric and
his band of merry "explorers" from enticing even more people to help
bankroll their wild-goose chase expeditions. Has anyone ever really thought
about the fact that her radio transmissions were really strong (signal level
5, according to the Itasca radio log) up until the time she disappeared, and
if they'd managed to land anywhere that was above water the radio would
still be operable (granted with no fuel they couldn't run the plane's
generator(s), but the ship's batteries should have lasted at least long
enough for them to get out a distress call - or several).

I went back and looked at some of my Earhart source material, and it turns
out that the Itasca had set up a DF station on Howland that would work on
frequencies that she was using, but apparently the batteries went dead
before they were in range and could use the DF steer.

Have you ever read _Ameila Earhart - The Mystery Solved_ (Elgen and Marie
Long)? The authors make a very compelling case for their theory (also backed
by a ton of research, interviews, etc.) - no bizarre conspiracy theories,
just an honest reporting of the facts and the obvious conclusions (which
also happens to agree with my own theory about what happened to them, and
that the plane is at the bottom of the ocean somewhere NW of Howland).

http://www.amazon.com/Amelia-Earhart-Elgen-M-Long/dp/B003E7ET9O

--
GregR



----- Original Message ----- From: Gary LaPook
To: NavList@fer3.com
Sent: Thursday, March 03, 2011 10:49 PM
Subject: [NavList] Re: Amelia Earhart Report


Looks like it was a turtle bone that TIGHAR found Nikumororo.
http://au.news.yahoo.com/thewest/a/-/world/8953017/expert-scotches-png-earhart-claims/
gl
----------------------------------------------------------------
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
----------------------------------------------------------------

   

Reply