NTSB: Plane Plunged Flat To The Ground

(CBS/AP)  Here in the Buffalo suburb of Clarence Center, the sadness and dismay linger on Saturday night as workers press their search for the cause of Thursday's deadly air crash, reports CBS News correspondent Jeff Glor.

Officials say the recovery of bodies and debris will take days, not hours, the focus of the investigation appears to be on ice buildup and on the plane's de-icing equipment, and more than 50 agencies are coordinating their efforts, including the National Transportation Safety Board and the FBI.

The commuter plane, which smashed into a house apparently plunged flat to the ground rather than nose-diving, ending up pointed away from the airport it was trying to reach, investigators said Saturday.

Investigators did not offer an explanation as to why the plane was pointed away from the Buffalo airport, but it does raise the possibility the pilot was fighting an icy airplane: Air safety guidelines says a pilot can try a 180-degree turn to rid a plane of ice.

Other possible explanations are that the aircraft was spinning or flipped upon impact.

Flight data showed the plane's safety systems warned the pilot that the aircraft was perilously close to losing lift and plummeting from the sky. The ensuing crash killed 49 people on the plane and one in the house.

Continental Connection Flight 3407 was cleared to land on a runway pointing to the southwest, but it crashed with its nose pointed northeast, said Steve Chealander, a National Transportation Safety Board member.

The Newark, N.J.-to-Buffalo flight didn't nose-dive into the house, as initially reported by some witnesses, Chealander said.

It will take as many as four days to remove human remains from the site, which he called an "excavation."

"Keep in mind, there's an airplane that fell on top of a house, and they're now intermingled," he said.

The plane - on its descent to Buffalo Niagara International Airport in a light snow and mist - plunged suddenly about six miles shy of the runway and exploded.

A "stick shaker" and "stick pusher" mechanism had activated to warn Capt. Marvin Renslow that the plane was about to lose aerodynamic lift, a condition called a stall. When the "stick pusher" engaged, it would have pointed the nose of the plane toward the ground to try to increase lift.

Crash investigators picked through incinerated wreckage Saturday, gathering evidence to determine what brought down the plane. Icing on the aircraft is suspected to have played a role, but officials have stopped short of calling that the cause.

Chealander said indicator lights showed that deicing equipment on the tail, wings and propeller appeared to be working and that investigators who examined both engines said it appears they were working normally at the time of the crash.

The news has left Western New York stunned, Glor reports. Most of the victims have local ties. And this afternoon family members were told they'd need to start the unspeakably difficult process of identifying remains, which are being taken to the county medical examiner's office.

As the families prepare to identify the remains of their loved ones, crash investigators and air safety experts also have a difficult task ahead: determining how frozen water could have brought down a brand new plane with high tech deicing equipment.

Experts were analyzing data from the black boxes, including statements by crew members about a buildup of ice on the wings and windshield of the plane, Chealander said.

If ice is a problem in flight, guidelines from the Aircraft Owners and Pilots Association Air Safety Foundation say pilots can take a number of steps, including changing speed, pulling the nose up or down, or trying a 180-degree turn.

On Friday, U.S. Sen. Robert Menendez, D-N.J., said Transportation Secretary Ray LaHood had told him he believes the aircraft made a 180-degree turn at 5,000 feet.

But there could be other explanations for why the plane was facing the wrong way.

Chealander said the NTSB would use data on the black boxes to determine whether the plane was in a flat spin before it crashed. Flight data indicated "severe" pitching and rolling before impact, so the violent nature of the crash also could have turned the aircraft around.

Other aircraft in the area Thursday night told air traffic controllers they also experienced icing around the time that the plane went down.

Icing is one of several elements being examined by investigators, Chealander said, adding that a full report will probably take a year.

DNA and dental records will be used to identify the bodies, he said.

One aspect of the investigation will focus on the crew, how they were trained and whether they had enough time to rest between flights. Other investigators focused on the weather, the mechanics of the plane and whether the engine, wings and various mechanics of the plane operated as they were designed to.

[mahdeealoo]

Initially, from my flight training, it sounded like a flat spin took place, but with the pitch and roll recorded before impact, it may be that the plane did not have time to actually go into a flat spin and lost lift, went into a stall and just plain fell out of the sky. A pilot''s skill in this instance is almost useless without altitude to recover by nosing down to regain lift.

My condolences to the families and friends of the victims of this tragedy.

[allzwell]

A flat spin. Must have been a horrifying last minute or so.

[jaywisch]

You could remove the part of this story that insinuates that a 180 degree turn will shed ice. That''s not only wrong, but stupid, and it shows your ignorance of aircraft. The reason you make a 180 degree turn is to get away from icing conditions. In other words, instead of continuing into conditions that will cause the aircraft to accrue more ice, you go back to where you have previously comme from where presumably there is no ice. As someone else pointed out, if you don''t understand aviation, call someone who does. Don''t show your stupidity.

[toolmangler-2009]

Yeah, gravity will do that....
Posted by MrSkidmark at 10:42 AM : Feb 15, 2009




Theres no such thing as ''gravity'', The Earth sucks...

[rjg771]

These turboprop planes have narrow wings. Eagle air had an ATR-72 crash in Indiana in 1994 with icing as the factor. (Wing design is same as plane in Buffalo crash) These planes were sent to warmer USA locations by the FAA.

[jw218389]

My heart goes out to the pilots and families.

I was referring to the corporate culture of Colgan and not that the copilot caused the crash.

[jw218389]

In mu opinion, maybe the problem with Colgan is their "fee to fly" training program - their copilots are not career pilots - they are paying to fly with Colgan in order to build hours and it is my understanding that they don''t pay their copilots a wage at all - I may be wrong but that''s the rumor in the aviation industry....

[Slrman-21001573651763300012869]

So we have experienced professional pilots saying that the 180%u02DA turn is total BS. I thought it was just me.

If the organizations like the NTSB and the FAA would focus on truly serving the public as they are supposed to do and not upon furthering their own agenda, perhaps some of these things would not happen.

[kenzico]

I hate how the media screws up aviation. I am a 7000 hour professional pilot that flys a corporate jet, I have instructed in jets for 8 years with a BS in Aerospace Technology. Not once have I heard that a 180 degree turn can rid an airplane of ice. Can the media get some aviation experts to write a story so it can be factually correct? Let me set the record straight, a 180 degree turn will not rid an airplane of ice. Raising the nose will expose he belly of the aircraft to collect more ice. Please consult a professional!

[yongamerica]

I saddened by any aviation accident, even the successful ditching in the Hudson. I hate to see a beautiful aircraft damaged or destroyed. It is more sorrowful to know that inures and deaths occurred.

Not much can be done to help the dead, but those they left behind need a lot to over come their loss. My heart goes to them.