… The Airborne Experiments: Three experiments were carried out to see to what extent a cellphone calling from an aircraft might reach a cell tower. The aircraft used were a Diamond Katana ultralight aircraft, a Cessna 127-R and a Piper Twin Apache. All three experimental flights flew patterns that guaranteed coverage by a variety of cellphone makes for calls from a cellphone expert using several current makes. All calls were received by an operator at a ground station. The operator recorded the time of a call (if received at all) as well as its duration and audio quality.
The Outcomes: When data from all three flights are put together, we find a straight line regression of failure probability with altitude. It must be stressed that the “messages” mentioned in this summary lasted only 10 to 20 seconds. Thus the “success” of such calls applies only to such messages, longer messages having a much higher probability of failure. The regression analysis reveals a 100% probability of success at 1000 feet, dropping linearly to 50% at 4000 feet and a 10% probability of success at 6000 feet — with only the analog phone succeeding in this case. These probabilities can be used as a basis for assessing the success of longer calls at the same altitudes. For example the success of a one-minute call may be viewed as a simple compound probability of, say five 20-second calls. Thus leads to a more realistic assessment for ordinary cellphone calls: 4000 feet—3%; 6000 feet — 0.001%, essentially impossible. At the altitudes normally flown by passenger aircraft the situation is completely hopeless. Feedback from many airline passengers who left cellphones “on” (not calling) during flight recall signal loss shortly after takeoff, at barely 1000 feet. The reason is that large passenger aircraft create signal attenuation caused by their large metal mass. We note in passing that the power output of a standard cellphone is 0.2 watts, whereas the power output of a passenger aircraft may be anywhere between 30 and 40 watts.
Conclusions: Accounts of “cellphone” calls made from aircraft allegedly used in the 9/11 attacks simply cannot possibly be true. Checks made of AT & T records for the day reveal no calls made from the back-of-the-seat phones either. All official and unofficial claims of cell phone calls from the allegedly hijacked aircraft are false.
A. K. Dewdney
Reference: A. K. Dewdney, “Project Achilles: Low Altitude Cellphone Experiments,” Physics911, 2003.
DOC (1 Page): 911 POTUS Dewdney Cell Phone False Narrative