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A New York City firefighter reveals in Book "Behind the Scenes Ground Zero", reveals that at least three of the four black boxes from Flight 11 and Flight 175 were found by "Federal Agents" at the World Trade Center cite, during the clean-up efforts from Sept 2001 to March 2002.
Its extremely rare that we dont get the recorders back. I dont recall another domestic case in w hich we didnt recover the recorders. said Ted Lopatkiewicz, Spokesman for the NTSB.
Originally posted by Pilgrum
There were 4 planes involved and the 'black boxes' were recovered from 2 of them (Pentagon & Shankville) with the flight data recordings intact.
Funny how the voice recoreder could not be salvaged from Flight 77, even though its very rare for this to happen.
Originally posted by thedman
Try reading the new book FIREFIGHT - goes into detail about the
impact of Flight 77 into the building and the resulting destruction
and intense fires which followed.
As a matter of fact, ABC news reported on 9-13-2001 that “Although investigators look for an entire black box, sometimes the only parts of the device that survive are the recorder’s crash-survivable memory units (CSMU). The CSMU is almost indestructible. [A former NTSB source told us that only a direct hit from a nuclear blast can destroy it] ABC also said that “it is housed within a stainless-steel shell that contains titanium or aluminum and a high-temperature insulation of dry silica material.”
Well thats very funny according to my information the systems are almost indestructible.
The data, rather than the whole recorder, must survive the accident so the data storage medium (magnetic tape or microchips) is located within a crash-protected container. The container is designed to survive both high-speed impact and post-impact fire. Flight recorders are not, however, indestructible and sometimes they are destroyed and the data lost.
Flight recorder design has improved considerably since the devices were first introduced in the 1950s. However, no recording device is perfect. Black boxes are sometimes never found or too badly damaged to recover some or all of the data from a crash. To reduce the likelihood of damage or loss, some more recent designs are self-ejecting and use the energy of impact to separate themselves from the aircraft. Loss of electrical power is also a common event in aviation accicents, such as Swissair Flight 111 when the black boxes were inoperative for the last six minutes of flight due to aircraft power failure. Several safety organizations have recommended providing the recorders with a backup battery to operate the devices for up to ten minutes if power is interrupted.
Originally posted by thedman
There have been number of incidents over years where the "black
boxes: were damaged or destroyed to make the data on the tape
A homing beacon is located in the recorder, but the recent example of the Sharm el-Sheikh
catastrophe shows us that under violent impact the two blocks can split apart. This same example has shown
us how difficult search efforts can be when the recorders have been submerged 1 000 metres below water
surface. There are also examples of recorders destroyed by fire following a crash. Introducing an ejection
mechanism would facilitate their recovery.
In the only previous accidental crash of a 767, the flight data recorder was destroyed in a 1991 Lauda Air plunge into the Thailand jungle, but the cockpit voice recorder provided a vital clue.
But even if the black boxes "survive" the crash, they can be at the bottom of the ocean, where it can take days or weeks to locate and retrieve them. That delay can mean a time of great uncertainty in determining whether an air disaster was the result of a safety shortfall or a terrorist attack. For this reason, the SAFE Act calls for the installation of deployable recorders. Located flush on the tailfin, the spring-loaded data package with its satellite-linked locator beacon would pop off the aircraft, falling safely beyond the crash site. At sea, the deployable recorder would float on the water.
For its part, the FBI is still denying everything, though with curious bit of linguistic wiggle room. "To the best of my knowledge, the flight recording devices from the World Trade Center crashes were never recovered. At least we never had them," says FBI spokesman Stephen Kodak.
A 9-11 rescue worker recently came forward to say he was told by FBI agents to “keep my mouth shut” about one of the “black boxes” a fellow firefighter helped locate at ground zero, contradicting the official story that none of the flight and cockpit data recorders were ever recovered in the wreckage of the World Trade Center (WTC) towers.
I was going to add that the boxes have locators attached to them. They don't just come across them by accident.
Not sure how reliable these websites are but two quite powerful points if true?
"It wasn’t until two years later that we began getting complaints about him," Tinney said. "We have one honorary firefighter and that is a child from the Make-A-Wish Foundation. Aside from the child, it is normally the chiefs and those above who are made honorary firefighters and he (Bellone) isn’t one. He’s saying he was made an honorary firefighter by New York Fire Commissioner Nicholas Scoppetta. That’s a fallacy."911myths.com
Tinney was one of the fire marshals who arrested Bellone, 51, of Brooklyn, N.Y., on Sept. 27, for having an FDNY Scott air tank, harness, regulator and mask. He was charged with grand larceny, criminal impersonation and possession of stolen property, but the charges were later dropped after Bellone returned the items. 911myths