Local News

NTSB: Erratic Elevator May Have Contributed To Crash

Posted Updated

CHARLOTTE, N.C. — Federal Investigators of a commuter airplane crash that killed 21 people are looking at erratic behavior by a piece of equipment that controls the plane's lift, an investigator said Thursday.

Information from a flight data recorder shows the elevator onthe Beech 1900 that crashed Wednesday morning "moving up and downa lot" following routine maintenance Monday night at an AirMidwest facility in Huntington, W.Va., said John Goglia, a NationalTransportation Safety Board member.

Goglia said the motion may not have influenced flights the planemade Tuesday, if the plane was not loaded to capacity. The planewas at nearly full weight Wednesday, he said.

"We do know the elevator tab was replaced, and that would require cable tensions to be re-adjusted," Goglia said. "Those are significant events to the flight control system of this aircraft."

The flight data recorder shows US Airways Express Flight 5481took off from Charlotte/Douglas International Airport with its noseup seven degrees, which is normal takeoff pitch. The pitch was 52degrees by the time the plane reached 1,200 feet.

"Something occurred to drive that pitch angle to 52 degrees,"Goglia said. "That is abnormal."

Data indicates the plane was not overloaded. But the NTSB also is looking at whether the weight on the plane was properly balanced.

"If you add fuel, you add passengers, and you add freight, that's going to move," Goglia said. "You add all the bags in the back of the airplane after you balance the airplane, the plane is going to tip. So, in order for the airplane to fly properly, the balance has to be within a certain range."

Flight 5481, a twin-engine turboprop carrying 19 passengers andtwo crew members to the Greenville-Spartanburg airport in Greer,S.C., rolled to its right and dropped rapidly, clipping a corner ofa US Airways maintenance hangar before it hit the ground just 37seconds after takeoff.

No one on the ground was injured, though a portion of the hangarwas scorched and battered. Workers were stabilizing the structureThursday.

Goglia said the last of the victims was removed from the plane'swreckage early Thursday afternoon. He said family members had askedto visit the site, which they were expected to do Friday.

Jonathan Orenstein, chief executive of Mesa Air Group, whichoperates commuter flights for US Airways and other airlines, saidthe work done on the plane Monday in West Virginia was performed byRaytheon Air Services.

Orenstein said the airline was looking for otherplanes that may have been maintained by the same group of workers.

Goglia said workers replaced a tab that controls movement of theelevator, keeping the cockpit crew from having to physically movethe elevator themselves. They also adjusted the tension of thecable that controls the tab, he said.

Elevators are flaps that swing up and down from the rear of aplane's horizontal tail stabilizer, increasing or decreasing theplane's lift.

In the case of Flight 5481, Goglia said, the flight datarecorder showed "The elevator was moving. It was moving a lot."

Goglia said a team of NTSB investigators was headed for the WestVirginia maintenance facility.

"We need to know which procedures were followed," he said.

Goglia and Orenstein both said they knew of no reports ofproblems with the plane from any of seven flight segments it madeTuesday.

FBI agent-in-charge Chris Swecker has said there is nopreliminary indication that terrorism was a factor in the accident,the first commercial crash in the United States since AmericanAirlines Flight 587 went down in New York on Nov. 12, 2001, killing265 people.

Orenstein said the crash was the first in his company's37-year history. He appeared near tears as he addressed reportersand had to pause to compose himself at one point.

"I apologize," he said. "It is really with a very heavy heartthat I stand before you over this tragedy."

The FAA has issued nearly two dozen airworthiness directives onthe Beech 1900-D since 1994. The directives warn of problems thatmust be repaired if found in an aircraft.

A directive issued in November and scheduled to be effective intwo days warned that screws in the elevator balance weightattachment could come loose and interfere with the horizontalstabilizer.

The plane, built in 1996, was one of about 50 operated by MesaAir Lines, parent of Air Midwest, said US Airways. The plane hadbeen flown 15,000 hours and performed 21,000 takeoffs and landings.

FAA records showed the aircraft was involved in five in-flightincidents that the NTSB said could affect safe operations. Theaircraft also reported 10 lesser service difficulties.

Flight 5481 took off shortly before 9 a.m. Within seconds thepilot, Capt. Katie Leslie, reported an emergency to the tower.

The transmission was cut short before she could identify theproblem, said Greg Martin, a spokesman for the Federal AviationAdministration.

Sgt. David Marshall of the North Carolina Air National Guard wasarriving for work at the Guard's headquarters near the airport whenhe saw the plane at about 1,000 feet, its nose pointing into theair.

Marshall, who holds a private pilot's license but does not flyfor the Guard, watched in horror as the plane stalled.

"The nose came down, and it began to level off and it went intoa second stall," he said Thursday as he arrived at the airport tooffer his account to investigators.

Copyright 2024 by WRAL.com and the Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.