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Important new information surfacing from P4911T, that a text message was confirmed RECEIVED long after UA 175 airplane was reported to have hit the South Tower. This evidence was tampered with in the 9/11 Omission Report, but due to the diligence of researchers, it provides further confirmation of what many of us have suspected for a long time: That the aircraft may have been switched in mid air.
Originally posted by spikey
The question is instead one of 'How does a telephone, smashed and incinerated in a crash, is in working order enough to receive a test message?'
The above log is an ACARS message received by UA27 at 10:32 EDT though the RGS of Minneapolis/St.Paul (MSP). Note how Sent and Received timestamps are visible.
The following is a failed ACARS message (not received by UA27):
HDQDD CHI68R
.HDQDDUA 111530/LIN
CMD
AN N447UA/GL MSP
- QUHDQDDUA 2
DDLXCXA
***UA27 ***
Again, no timestamp for the Received field, no counter #.
This message was sent from the ground at 11:30 EDT. The aircraft did not receive it, probably because it had already landed somewhere and its onboard ACARS MU had been turned off.
Originally posted by ProudBird
Now, if you want to provide evidence that UAL flight 27 landed at MSP after the Nationwide order to clear the skies, and that by 1530 Z (1130 EDT, 1030 in Minneapolis) the airplane had been completely de-powered (or, on External power, with only the Ground Service buses energized), then I will look forward to reading your proof.
Based on what the folks who are saying that the time stamp on the bottom is the time of receipt… well obviously not in this case as there isn't anything that it will be receiving it.
Originally posted by gman1972
Okay so I'll start off with the actual telex manual that I found which describes what the time stamps at the bottom mean
Mr. Ballinger stated that the ACARS messages have two times listed: the time sent and the time received. He stated that once he sends the message it is delivered to the addressed aircraft through AIRINC immediately. He is not aware of any delay in the aircraft receiving the message after he sends it.
Originally posted by ProudBird
I can retract the educated guess that the bottom time stamp must have come from ARINC. It was the only thing I could think of, since I knew that it certainly was NOT an "acknowledgement" from the airplane itself.
KNERR further advised that AERONAUTICAL' RADIO INCORPORATED ARINC serves as the network administrator for the communication data. According to KNERR, this is important to remember when reviewing data messages because uplink and downlink times may show a time delay when compared. This is caused by the/processing of multiple ACARS messages through the ARINC network at the same time. ARINC serves a substantial portion of the commercial airline industry operating within the Unites States. Depending on the time of day or region of the country that an aircraft may be operating over, ACARS traffic can be delayed.
KNERR advised that when an aircraft downlinks data to communication towers it does so by sending out messages over a large geographic area that it is flying. Depending on the area of the country, more than one communication tower may receive the aircraft's message. KNERR pointed this out to be the case during FLIGHT 93's flight over New Jersey, Pennsylvania, and Ohio on 09/11/2001.
Originally posted by gman1972
Obviously you complete ignore the subject. You don't read posts, you don't bother to read the links provided, you use more than questionable examples to refute a theory and yet you insist you have debunked the article?
KNERR further advised that AERONAUTICAL' RADIO INCORPORATED ARINC serves as the network administrator for the communication data.
According to KNERR, this is important to remember when reviewing data messages because uplink and downlink times may show a time delay when compared.
This is caused by the/processing of multiple ACARS messages through the ARINC network at the same time. ARINC serves a substantial portion of the commercial airline industry operating within the Unites States. Depending on the time of day or region of the country that an aircraft may be operating over, ACARS traffic can be delayed.
Originally posted by bubs49
reply to post by gman1972
Definitely you don't read the others' posts. Also, the fact that first you linked to a page with a list of ACARS decoded (probably by a radio amateur) through a non-proprietary decoding software (what remarkably you called "real ACARS", LOL) and now you claim to have disproved a theory based on one or two personal tests leads me to conclude that you completely ignore how the format changes from one airline to another. Unless you have the same proprietary decoding format as United Airlines, you'll never get the same output format!
So much work when the author of the referred ACARS already provided a complete explanation about what the timestamp at the bottom means?
Mr. Ballinger stated that the ACARS messages have two times listed: the time sent and the time received. He stated that once he sends the message it is delivered to the addressed aircraft through AIRINC immediately. He is not aware of any delay in the aircraft receiving the message after he sends it.
Aircraft Communications Addressing and Reporting System (ACARS) is a digital datalink system for transmission of short, relatively simple messages between aircraft and ground stations via radio or satellite. The protocol, which was designed by ARINC to replace their VHF voice service and deployed in 1978,[1] uses telex formats. SITA later augmented their worldwide ground data network by adding radio stations to provide ACARS service. Over the next 20 years, ACARS will be superseded by the Aeronautical Telecommunications Network (ATN) protocol for Air Traffic Control communications and by the Internet Protocol for airline communications.
Originally posted by ProudBird
reply to post by gman1972
I can retract the educated guess that the bottom time stamp must have come from ARINC. It was the only thing I could think of, since I knew that it certainly was NOT an "acknowledgement" from the airplane itself.
GAMBARANI was referenced in Baltimore RAPID START 1163 as the point of contact for obtaining any text messages sent by the four hijacked aircrafts in captioned investigation. GAMBARANI advised all text data messages retrieved from the four hijacked aircraft were stored without being analyzed by ARINC.
[...]
GAMBARANI advised the text messages from aircraft through 9/11 ARINC usually contain information such as time away from the gate, Workine-level time of take off, time of landing and time to the gate. Any administrative messages supplied by the airline to ARINC can be Employee uploaded to the aircraft. Occasionally, companies will monitor engine instruments and performance through the ARINC system automatically. GAMBARANI is not sure what monitoring status was maintained by American or United Airlines, the two companies involved in the hijacking.
DDLXCXA CHIAK CH158R
.CHIAKUA DA 111323/ED
CMD
AN N612UA/GL PIT -
QUCHIYRUA 1UA175 BOSLAX
- MESSAGE FROM CHIDD -
/BEWARE ANY COCKPIT INTROUSION: TWO AIRCAFT IN NY . HIT TRADE C NTER BUILDS... CHIDD ED BALLINGER ;
09111323 108575 0574