Bill Prymak, radio experts analyze Amelia Earhart’s bizarre radio behavior during her last flight

When Amelia Earhart took off from Lae, New Guinea at 10 a.m. local time on July 2, 1937, the challenge she faced seemed clear-cut. Her stated destination was a landing strip on Howland Island, 2,556 statute miles distant, a speck in the wide Pacific, about 1,900 miles southwest of Honolulu and 200 miles east of the International Dateline. They would be crossing two time zones and the dateline, “flying into yesterday,” so to speak, scheduled to arrive July 2 at Howland several hours before the time they departed Lae on the same date. But though the flight had never before been attempted, Amelia seemingly had every reason to be confident of success.

First, she had the best airborne navigator in the world, Fred Noonan, a veteran of the historic round-trip China Clipper flight between San Francisco and Honolulu in April 1935, who had mapped Pan Am’s clipper routes across the Pacific Ocean, participating in many flights to Midway Island, Wake Island, Guam, the Philippines, and Hong Kong. Her Electra was loaded with 1,150 gallons of fuel and had an estimated range of 4,000 miles.  Her expected flight time ranged between 20 and 23 hours or so, depending on varying wind effects on the Electra’s average speed. Her radio equipment, though primitive by today’s standards, was the latest three-channel Western Electric equipment of the type then being used by the airlines to provide one channel at 500 kc and the other two at around 3000 and 6000 kc (kilocycles; 3105 and 6210 kc).

Perhaps the last photo taken before the fliers’ July 2 takeoff from Lae, New Guinea. Mr. F.C. Jacobs of the New Guinea Gold Mining Company stands between Amelia and Fred. Note that Fred looks chipper and ready to go, not hung over from a night of drinking, as has been alleged.

But Amelia had a history of being a bit cavalier about radio communications, and for still unknown reasons, she left her trailing antenna at Miami, which severely limited her ability to transmit with any significant power on the all-important 500 kc frequency. This severely limited the range at which the Coast Guard Cutter Itasca could obtain a fix on the Electra as it approached Howland, and was only the beginning of the entire weird chain of events leading to Amelia’s failure to reach Howland.

Much has been written about Amelia’s final flight, and since we have a detailed record of radio receptions and transmissions between  Itasca and Earhart (see Radio Transcripts – Earhart Flight”) before she disappeared, researchers have long sought the answers to the so-called Earhart mystery in the logs and other records. But though the “solution” has never existed in the air, and we already know where she landed and where she died, important clues that suggest what was actually going on during those final hours can indeed be gleaned by the discerning eye.

Amelia’s first intelligible message wasn’t received at Lae until more than four hours after her departure. At 2:18 p.m., Lae radio operator Harry Balfour heard, “HEIGHT 7000 FEET SPEED 140 KNOTS and a remark that sounded like “EVERYTHING OKAY.’” Balfour sent weather reports until 5:20 p.m., but none were acknowledged by Amelia. At 3:19 p.m., she reported, “HEIGHT 10000 FEET POSITION 150.7 east 7.3 south CUMULUS CLOUDS EVERYTHING OKAY.” At 5:18 p.m. (0718 GMT), her position was “4.33 SOUTH 159.7 EAST HEIGHT 8000 FEET OVER CUMULUS CLOUDS WIND 23 KNOTS.” This put the Electra just southwest of the Nukumanu Islands, on track about one-third of the way on course to Howland.

This was the official flight plan, 2,556 statute miles from Lae to Howland. The 337-157 line of position, or sun line passed through the Phoenix Islands, near Gardner, now known as Nikumaroro, and the popular theory, though completely false, is in part attributable to this phenomena.

This was the official flight plan, 2,556 statute miles from Lae to Howland Island. The 337-157 line of position, or sun line passed through the Phoenix Islands, near Gardner, now known as Nikumaroro. The massively publicized theory that the fliers landed there, though completely false, is in part attributable to this phenomena.

The plane had covered about 846 miles at a ground speed of just 118 miles per hour. At 6 p.m. Lae time, Earhart signed off with Balfour before she attempted to establish contact with Itasca, something that most agree never really happened. She told Balfour she was changing from 6210 to 3105, her nighttime frequency. “She told me that she wished to contact the … Itasca,” Balfour wrote, “so there was nothing we could do about it but pass the last terminal forecast to her and the upper air report from Ocean Island.” Balfour recalled Earhart’s last position as “somewhere in the vicinity of Ocean Island” and that she was “on course for Howland at 12,000 feet.”

In keeping with my previously stated theme of returning to some of the great articles published in Bill Prymak’s Amelia Earhart Society Newsletters from 1989 to 2000, the following analysis, written by Bill for the December 1993 AES Newsletter, is presented. In following posts we will continue to explore the complexities of the Earhart radio conundrum, and will examine the work of a few of the finest analysts to examine this always-perplexing riddle, including Paul Rafford Jr., the former Pan Am radio flight officer, and Almon Gray, the late Navy Reserve captain and PAA China Clipper flight officer.

Today we present Bill Prymak’s informative and amusing 1993 essay to give us a glimpse into the Electra’s cockpit that fateful morning. Instead of setting off his piece with distracting quotation marks throughout, I will simply indent it slightly, and will clearly indicate when today’s segment ends. Now, from the December 1993 AES Newsletter:   


The following are my thoughts on a subject that has been beaten to death by every researcher — real or armchair, but I’m taking an approach perhaps never looked at–or discussed, so bear with me, and try to follow my reasoning.  The radio log is looked at from a new perspective.

Study the FINAL RADIO LOG [see The Itasca Radio Logs].  A third-rate amateur back alley script writer with absolutely no aviation background could not have done a worse job, except for one perfectly executed objective: TRANSMIT SO THAT NOBODY, BUT NOBODY CAN CUT A FIX ON YOU! INDEED, THE TRANSMISSIONS PROVE THIS!

Hundreds have dissected to ad nauseam the words, the time logs, voice pitch, etc., but nobody to my knowledge has ever, as PIC (Pilot In Command) put themselves in her shoes and really chronologically played out the events and thoughts about how a frightened person, ABOUT TO DIE, would, and should have reacted. Am I qualified to make this analysis? You can bet your buppies I am. Twenty-five years ago, as PIC 20 miles off the coast of New England, I suffered a partial engine failure, and, yes, I felt that I could easily die right then and there. So I grabbed my only lifeline — the radio, and “maydayed” on 121.5 and got the Coast Guard. My most vivid memory of the incident was my refusing for even one second to let go (i.e. stop talking) with the voice at the other end of the line. I felt I was going to die without him! I thus regard myself qualified to interpret AE’s feelings during the time period of the ITASCA RADIO LOG.

Keeping the above mental frame of mind that a distressed PIC would have, let’s take a look at the TIME LAPSES BETWEEN HER TRANSMISSIONS: (Earhart’s messages are bolded and set off by quotation marks.)

A view of Howland Island that Amelia Earhart never enjoyed. The island, a property of the United States, remains uninhabited, but is quite poplar among various wildlife that nests and forages there.

A view of Howland Island that Amelia Earhart never enjoyed. The island, a property of the United States, remains uninhabited by humans, though it’s quite popular among various birds and other wildlife that nests and forages there.

0345 (Howland Island Time): BROADCAST ON 3105 KC ON HOUR AND HALF-HOUR – OVERCAST.”  (This is radio chatter totally unbecoming a pilot.)


ANALYSIS: She needs bearing, she is beginning to feel unsure of her position “Hey, this is getting serious. What the hell am I doing over this uncharted ocean without an absolute, positive fix? Can Fred really find that fly-speck of an island without a radio DF [direction finder] Fix? I better get cranking on that radio. ” And yet, after the above probable mindset, Earhart waits 63 minutes (over one hour), an eternity considering her plight, before she transmits again:

0615: “TAKE BEARING ON 3105 KC” Whistles briefly.

ANALYSIS:  Above totally incorrect, inappropriate, and certainly not what a lost (YES, she is lost because she is unsure of where she is!) pilot would be “’working” with what she may possibly feel is her last lifeline before death. I would expect a professional (and by now a very worried) pilot to say something like the following: “EARHART TO ITASCA … EARHART TO ITASCA … I DO NOT READ YOU … GIVING YOU A LONG COUNT … 1 2 3 4 5 6 7 8 9 10 … 10 9 8 7 6 5 4 3 2 1 … ANSWER ON 3105 KC REQUEST BEARING TO YOUR POSITION.”

And the above transmission, or words to that effect, would be repeated over and over again with never more than a minute break in between, and per Paul Mantz’s and Harry Manning’s teachings, she would have thrown in additional chatter to fill in more time to enable Itasca to get a good DF fix on her. She certainly would have asked “What are your local winds and weather? Can you push up some smoke to help us see you? Please respond, we are not hearing you. Our present flight conditions are … ”  She does none of the above, and is silent for another 31 minutes before the next recorded message.


ANALYSIS: She’s now tired, lost, with gas gauges creeping towards zero, and the above message is so casual and insubstantial that it makes you wonder if she didn’t spend the last 31 minutes manicuring her fingernails! Something is terribly cut of sync.

After the 0646 transmission we have no material or technical reason to suspect any degradation of her transmitting capability, in fact her signals to the ITASCA are getting stronger. So it is with utter disbelief that Earhart waits nearly one full hour before (0742) her next transmission. She’s now been more than 19 hours in a hot, cramped, noisy and smelly cockpit, she has no idea where she is, she hasn’t heard one peep out of the ITASCA, she must be dead tired, totally drained. It would be such a tremendous lift for her if she could hear a friendly and assuring voice from the outside world. And yet for one full hour … she says nothing! I can’t believe it! It would break the droning monotony, plus avail the only opportunity to reach the outside world (AND ULTIMATE SAFETY) if she would pick up the mike and TALK! It doesn’t cost one plug nickel or one drop of gas to talk on the radio, which at this time could be their only hope of avoiding very deadly consequences.


ANALYSIS: Does this sound like a coerced preplanned program she was obliged to follow, to be broadcast at a certain pre-determined time? Could Paul Rafford be correct in his statements that quite possibly this whole affair was pre-recorded? Note all of her transmissions were deliberately shortened to preclude the ITASCA from taking a DF fix on her. She knew the time required; certainly Fred knew the same time required for ITASCA to take a fix.


ANALYSIS: This message is totally non-conforming with the life- threatening saga unfolding before Amelia and Fred. They are lost. They are low on fuel. They’re both beat, and probably very frightened. The message from Earhart should have added: “FORGET THE HALF HOUR SCHEDULE: REPLY NOW AND CONTINUE TO REPLY UNTIL WE CONFIRM READING YOU. CAN YOU SEE OR HEAR US? ARE YOU SENDING UP SMOKE? CAN YOU GIVE US ANY CLOUD CLUES IN ANY DIRECTION?” Amelia would have continued transmitting, if only to give ITASCA more time for the DF fix. In her plight, growing more ominous by the minute, it is inconceivable that she did not constantly transmit to increase her chances of establishing a lifeline.

Finally, a small communication breakthrough is achieved. Earhart finally receives a signal but it is inadequate for her to get a direction fix. At 0803 she responds to ITASCA:


This was followed by a series of long dashes to ITASCA but they were unable to get a DF fix. See Captain Almon Gray’s excellent dissertation (elsewhere in this newsletter) for the best answer regarding why AE could not hear ITASCA. Note that there is a total absence of any urgency on the part of Earhart. Considering her situation, she should have been “’glued to her microphone” in a continuous attempt to establish two-way communications with ITASCA.

After the above transmission, strangely there is no further word from Earhart until some 40 minutes later. Forty minutes! That’s an eternity! What the blazes was she doing for 40 minutes, since it must be assumed, considering the strong signals, that any transmitting done by AE would have been received by ITASCA. Was she manicuring Fred’s fingernails? Or was a different, covert plan already put into action?


At 20 hours and 14 minutes after lifting off from Lae, Amelia Earhart transmitted her last officially acknowledged radio message. Let the [Rollin] Reinecks and other navigation gurus battle over the true meaning of the above words “LINE OF POSITION 157/337.” There seems to be colossal differences over the true meaning of the phrase.

Captain Gray’s analysis of the message received by Nauru (at noon Howland time, as reported by Fred Goerner in the first edition of The Search for Amelia Earhart) is convincing evidence that Earhart did set down on land. There has been much controversy over the Electra’s ultimate time-in-air before fuel exhaustion. Let me set the record straight. This issue was discussed at length with Art Kennedy, who had overhauled her engines prior to the second attempt, and who calibrated her engines with PRATT & WHITNEY factory test equipment.

We carefully went over his test cell engine records, and barring fuel-cell leakage and gross mixture-control mismanagement, she had between 4.5 and 5.5 hours of fuel remaining after her 0844 transmission. This calculation by Kennedy is superior to any Lockheed literature. Therefore, it is my conclusion that she had the range to reach either the Gilbert Islands, or the lower part of the Marshall Islands, notably Mill Atoll, where so many researchers have placed her landing site.

Based on the above it’s tough to convince any serious researcher that she really intended to land at Howland Island. Frankly, I would have trashed as garbage the above RADIO LOG if it had not achieved such notoriety from official government channels. It’s a much censored and doctored script that’s a sad imitation of what should have transpired between two professional entities — Amelia Earhart, the professional pi!ot and the well-trained and disciplined crew of the ITASCA.

1200: Received by Nauru Radio on 6210: “LAND IN SIGHT.”

Captain Gray gives good reason why this message is valid: It should be further noted that her 0844 message has AE going to frequency 6210, same as received by Nauru Radio. (End of Radio Log – Earhart/ITASCA.)

It should be noted that this alleged “LAND IN SIGHT” message has been widely disputed, and many believe it was an aberration or false report of a message received by Nauru radio the previous day.  In our next posting, we’ll look at Prymak’s summary and conclusions relative to the above, and consider that it all might mean in terms of trying to divine just what was actually occurring during the final hours of Amelia Earhart’s alleged approach to Howland Island.



18 responses

  1. The Japanese military used electronics to interfere w radio transmissions in that area during those years.


    1. Judy,
      You want to insist that the Japanese somehow interfered or jammed Amelia’s signals, but we have absolutely no evidence that this happened. They had the technology but the Itasca radio crew would have known if it was happening, at least that’s what I gather. Paul Rafford also told me recently that it didn’t happen. I asked you earlier to refer us to a source for your contention.

      Liked by 2 people

  2. Mike, I am not so sure the picture of Noonan and Earhart in your blog was taken just before their last takeoff. It could possibly have been taken upon their arrival, or the day before the last flight – not that it really matters.

    If you look closely at the clip of the last film of Earhart and Noonan at Lae, the clothing changes even in the clip; meaning the film was spliced together at some point prior to developing. Noonan at one point has a tie and then no tie. Noonan has on a light colored shirt and then a darker shirt. Noonan has an envelope stuffed in his shirt pocket and then no envelope. Earhart has a different blouse. on as well. There are several other noticeable differences as well

    Its all a moot point anyway.



    1. Mike, you know very well how much I respect you and your efforts with the Earhart research. But … you are KILLING me with these cliffhangers! Is there any chance we can find Prymack’s voluminous collection online? Is there a plan for that? That said, I agree that Earhart’s radio presence is oddly casual and limited. Anyone who was looking at a vast and mostly empty sea beneath them, along with a fuel gauge reading towards the low end, should have been more vocal about getting a fix on her location. What I read here so far leads me to wonder if she was doing reconnaissance and pretending to be lost.


      1. Wolfy,
        Thanks for your kind words. I don’t have the rights to Bill’s newsletters, but am certain the family doesn’t mind that I run pieces of them from time to time. Maybe someday.


    1. Judy,
      Thanks for sending this interesting document. Some of our readers might want to look at this closely. But this CinCPac (Commander in Chief Pacific) – Bulletin that was declassified in 1945 and is now part of the Navy Department Library online has no relationship to Amelia Earhart’s July 1937 flight, nor does it make any claims about any Japanese interference with Amelia’s radio messages, nor does it even describe Japanese abilities at all in 1937.
      The closest thing I could see was the below statement about Japanese “emphasis on radio security” in 1943:
      Japanese radio counter-intelligence measures involve the enforcement of radio security, jamming, and radio deception.
      A number of documents have illustrated the increasing Japanese emphasis on radio security. Probably the most authoritative statement yet captured is found in a security manual issued by the First Combined Communications Unit on 15 August 1943, based on a study of both U.S. and Japanese radio traffic.

      Thanks for sending.

      Liked by 1 person

      1. Judy, good find!

        This communication file was part of a captured cache found as stated on Saipan. It quickly found its way into a JICPOA bulletin that was disseminated during the war. It was highly classified at the time. I have copies of this file that I made at NARA. I had no idea this information was available from the Navy HistoryLlibrary and available online no less.

        All this reinforces my belief that no worth while treasures remain at NARA that has not been previously vetted by the Navy. (Sigh)

        I agree with Mike. I doubt there was any radio jamming by the Japanese in 1937 – unless it was in China. Were the Japanese following the progress of AE’s flight by monitoring radio traffic? I bet they were.


      2. Thanks Les, appreciate your learned input. I should have added, and agree with Les, that of course the Japs were likely tracking Amelia and listening to her messages throughout the flight, just not interfering in any way. They would certainly be interested in where she was for obvious reasons. Much more will be forthcoming in future posts.

        Liked by 1 person

  3. Mike, thank you for the great effort in uncovering the truth! When will our government come clean with the facts? What happened to government for the people by the people! Our fore fathers would be rolling over in their graves! I wonder what it’s going to take? Please keep up the great work AE and Fred deserve better from their nation!


    1. Thanks Gordon, your encouragement is very much appreciated. You are among the scant few enlightened souls who really care about what our government has done to the memory of Amelia and Fred.
      All the best,

      Liked by 1 person

  4. Wayne E Eades Ltc, USAF (Ret) | Reply

    The introduction to this article says we KNOW where Amelia Earhart landed and died. Could find no info on Wikipedia concerning this fact. What was her location? Should this info be sent to Wikipedia?


    1. Colonel Eades,
      You must be brand new to this blog and the Earhart matter in general. Wikipedia would be among the last to admit the truth in the Earhart disappearance, which it labels an “unsubstantiated rumor and myth” on its Earhart page. Rather than spoil it for you, I would strongly recommend that you invest a pittance in my book on Amazon, or failing that, do a minimal of reading of earlier postings on this blog. Seek and you will find soon enough. Welcome to the Truth.

      Liked by 1 person

  5. Noonan was a one time a crack navigator, but he started drinking and PanAm fired him. In Lae Earhardt complained about Noonan drinking heavily while the plane was repaired. Your references to manicures, etc. are demeaning and sexist. You should be ashamed.


    1. Why don’t you learn how to spell our heroine’s last name, Pete, before you jump in with your false accusations? Noonan was clean and sober when they took off from Lae, and the best evidence tells us he drank only once, two nights before July 2. You can take your PC sexist allegations and shove them where the sun don’t shine. You might try reading a bit too, instead of connecting Amelia’s last name with your favorite race car driver. You sound like a typical product of our public school’s self-esteem program, wherein one plus one equals three if it makes little Johnny feel good about himself. Sadly, we have not only far too much flat-out illiteracy in our nation, but also people who can read just enough to make fools of themselves by fracturing every detail of a story.

      Liked by 2 people

  6. I don’t know if you’ll see this post, Mike, since I’m late to the party 🙂 but I can’t get over Amelia’s odd radio behavior. After leaving Lae, she didn’t appear to have heard ANY incoming messages except for the one sent in Morse code by the Itasca. She certainly didn’t acknowledge hearing anyone or respond to their requests. Why didn’t she find that strange, 20 hours of radio silence? I’d have been broadcasting that fact repeatedly. Am I missing something here? Has anyone addressed this?


    1. George,
      I suggest that you need to get and read Truth at Last, wherein Amelia’s strange radio behavior is discussed at length, as it is in this blog. Do a search on “Radio” and you will find plenty of reading material.

      Late is better than never!



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