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The Black Boxes would reveal, what kind of flights, planes or other non commercial aircraft objects, really arrived in New York.
9/11 "black box" cover-up at Ground Zero?
Will Bunch/Philadelphia News -October 28
Two men who worked extensively in the wreckage of the World Trade Center claim they helped federal agents find three of the four “black boxes” from the jetliners that struck the towers on 9/11 - contradicting the official account.
Both the independent 9/11 Commission and federal authorities continue to insist that none of the four devices - a cockpit voice recorder (CVR) and flight data recorder (FDR) from the two planes - were ever found in the wreckage.
But New York City firefighter Nicholas DeMasi has written in a recent book -- self-published by several Ground Zero workers -- that he escorted federal agents on an all-terrain vehicle in October 2001 and helped them locate three of the four...
His account is supported by a volunteer, Mike Bellone, whose efforts at Ground Zero have been chronicled in the New York Times and elsewhere. Bellone said assisted DeMasi and the agents and that saw a device that resembling a “black box” in the back of the firefighter’s ATV.
Their story raises the question of whether there was a some type of cover-up at Ground Zero. Federal aviation officials - blaming the massive devastation - have said the World Trade Center attacks seem to be the only major jetliner crashes in which the critical devices were never located.
A footnote to the 9/11 Commission Report issued this summer flatly states: “The CVRs and FDRs from American 11 and United 175” - the two planes that hit the Trade Center - “were not found.”
And officials for the FBI - which oversaw the cleanup at Ground Zero - and the New York City Fire Department repeated this week that the devices were never recovered.
The “black boxes” - actually orange - could have provided valuable new information about the worst terror attack to ever take place on American soil.
The cockpit voice recorder uses two microphones to capture the sounds of the cockpit for the last 30 minutes of a doomed flight on a tape loop. In the case of the hijacked 9/11 jetliners, the devices should have captured any conversations or actions involving the hijackers, as well as radio transmissions.
The flight data recorder records things like airspeed, heading, and altitude. Both devices - located in the tail of the airplane - emit loud “pings” so they can be located even in ocean jetliner crashes, like the 1996 explosion of TWA Flight 800 off Long Island.
They are built to survive an impact of enormous force - 3400 Gs - and a fire of 1100 degrees Celsius for one hour, somewhat higher than official estimates of the World Trade Center blaze.
“It's extremely rare that we don't get the recorders back. I can't recall another domestic case in which we did not recover the recorders,” Ted Lopatkiewicz, spokesman for the National Transportation Safety Board, told CBS News in 2002. However, officials said little of the jets was recovered.
DeMasi was with now defunct Engine Company 261 in 2001. He wrote up his recollections of the Ground Zero recovery in a glossy book self-published by a group that calls itself Trauma Recovery Assistance for Children, or the TRAC Team. The book was published in 2003 but received little notice.
DeMasi, an all-terrain vehicles hobbyist - said he donated 4 ATVs to the clean-up and became known as “the ATV Guy.”
“At one point, I was asked to take Federal Agents around the site to search for the black boxes from the planes,” he wrote. “We were getting ready to go out. My ATV was parked at the top of the stairs at the Brooks Brothers entrance area. We loaded up about a million dollars worth of equipment and strapped it into the ATV...”
“There were a total of four black boxes. We found three.”
Efforts over several days to locate and interview DeMasi, who is now said to be with the FDNY’s Marine Unit, were not successful.
But his account was verified by another member of the so-called TRAC Team, recovery site volunteer Bellone. He recalled FBI agents arriving for the search one day in early October, setting up their equipment near Brooks Brothers. He said he didn’t go out with them on the ATV but observed their search.
At one point, Bellone said he observed the team with a box that appeared charred but was redish-orange with two white stripes. Pictures of the flight recorders on the NTSB and other Web sites show devices that are orange, with two white stripes.
“There was the one that I saw, and two others were recovered in different locations - but I wasn’t there for the other two,” Bellone said. He said the FBI agents left with the boxes.
If the account by DeMasi and Bellone is true, it’s not clear what motive federal authorities would have for claiming they weren’t found.
By the same token, however, it’s not clear what incentive either man would have to lie.
An FBI spokesman in New York, Jim Margolin, said after checking with the leader of the Ground Zero investigation that none of the boxes were recovered.
Frank Gribbon, the FDNY spokesman, also said “no one in the Department is aware of the recovery of any of the airline "black boxes" at the WTC site.”
Bellone has encounted some unrelated problems in connection with the TRAC group, however. In April, the New York Post reported (story not available online) that TRAC owned money to a number of creditors, including the company that published the book. Fire officials also told Bellone, who was made an honorary firefighter by a New York engine company, that he couldn’t wear an official uniform on school visits...
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How Black Boxes Work
HowStuffWorks
by Kevin Bonsor
After a Crash
Although they are called "black boxes," aviation
recorders are actually painted bright orange. This
distinct color, along with the strips of reflective
tape attached to the recorders' exteriors, help
investigators locate the black boxes following an
accident. These are especially helpful when a plane
lands in the water. There are two possible origins of
the term "black box": Some believe it is because early
recorders were painted black, while others think it
refers to the charring that occurs in post-accident
fires.
Underwater Locator Beacon
In addition to the paint and reflective tape, black
boxes are equipped with an underwater locator beacon
(ULB). If you look at the picture of a black box, you
will almost always see a small, cylindrical object
attached to one end of the device. While it doubles as
a handle for carrying the black box, this cylinder is
actually a beacon.
If a plane crashes into the water, this beacon sends
out an ultrasonic pulse that cannot be heard by human
ears but is readily detectable by sonar and acoustical
locating equipment. There is a submergence sensor on
the side of the beacon that looks like a bull's-eye.
When water touches this sensor, it activates the
beacon.
The beacon sends out pulses at 37.5 kilohertz (kHz)
and can transmit sound as deep as 14,000 feet (4,267
m). Once the beacon begins "pinging," it pings once
per second for 30 days. This beacon is powered by a
battery that has a shelf life of six years. In rare
instances, the beacon may get snapped off during a
high-impact collision.
In the United States, when investigators locate a
black box it is transported to the computer labs at
the National Transportation Safety Board (NTSB).
Special care is taken in transporting these devices in
order to avoid any (further) damage to the recording
medium. In cases of water accidents, recorders are
placed in a cooler of water to keep them from drying
out.
"What they are trying to do is preserve the state of
the recorder until they have it in a location where it
can all be properly handled," Doran said. "By keeping
the recorder in a bucket of water, usually it's a
cooler, what they are doing is just keeping it in the
same environment from which it was retrieved until it
gets to a place where it can be adequately
disassembled."
