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NTSB Issues its latest update on the accident of Delta flight 1086 at LaGuardia Airport

NTSB logo

The National Transportation Safety Board (NTSB) (Washington) has issued this update report on Delta Air Lines flight DL 1086 at LaGuardia Airport in New York on March 5, 2015:

As part of its ongoing investigation into last week’s accident at LaGuardia Airport where Delta Air Lines flight 1086 veered off the runway shortly after touching down, the NTSB on March 9 released its second investigative update.

On Thursday, March 5, 2015 at approximately 11:18 A.M., Delta flight 1086, a Boeing (McDonnell Douglas) MD-88 flying from Atlanta, GA to LaGuardia, NY exited the runway and came to rest with its nose on an embankment. There were 127 passengers (including 2 lap children) and 5 crewmembers on board the flight. Twenty three passengers received minor injuries, and others were transported to the hospital for evaluation. All passengers have been released from the hospital. Since arriving on scene, the NTSB, with assistance from the FBI, has documented the runway markings and the airplane. Investigators have determined:

1. The airplane departed the left side of runway 13 about 3,000 feet from the approach end of the runway. The tracks were on a heading of about 10 degrees from the runway heading.
About 4,100 feet from the approach end of the runway, the airplanes left wing initially struck the airport’s perimeter fence, which is located on top of the berm, and the airplane tracks turn back parallel with runway 13.

2. About 5,000 feet from the approach end of the runway, the airplane came to rest with its nose over the berm,. The left wing of the airplane destroyed about 940 feet of the perimeter fence.

3. Significant damage to the airplane was noted, including:

A. Damage on the left wing’s leading edge slats, trailing edge flaps, and flight spoilers.

B. The breach of the left wing fuel tank was noted in the area of the outboard end of the outboard trailing edge flap.

C. Damage to the front radome, weather radar and to the underside of the fuselage from the front of the airplane all the way back to the area of the left front passenger door.

D. Damage was also noted in the nose landing gear well and main electronics bay.

4. The tailcone handle in the main cabin was actuated.

5. The autobrake selector switch in the cockpit was found in the “max” position.

As part of the investigative process, the following investigative groups have been formed: Operations and Human Performance, Airworthiness, Airports, Flight Data Recorder, Cockpit Voice Recorder, and Maintenance Records. Below is a summary of some their work, to date.

1. The Maintenance Records group began reviewing the maintenance records on Saturday and that work is ongoing.

A. Delta Air Lines is the original owner of the accident airplane and took delivery of it on December 30, 1987.

B. The aircraft had 71,195.54 flight hours and 54,865 flight cycles at the time of the accident.

C. The last major maintenance visit took place on September 22, 2014 in Jacksonville, Fla. This visit was part of the airplane’s regularly scheduled maintenance program, and included tests of the auto brake, antiskid and auto spoiler systems.

D. The last overnight service check was completed March 2, 2015 in Tampa, Fla.

2. Investigators with the Airworthiness group will continue to examine and test the antiskid, autobrake and thrust reverser systems today.

3. The Operations and Human Performance groups interviewed the flight crew on Saturday in Atlanta, Ga. The crew stated:

A. They based their decision to land on braking action reports of “good,” which they received from air traffic control.

B. That the runway appeared all white when they broke out of the overcast, moments before landing.

C. That the automatic spoilers did not deploy but that the first officer quickly deployed them manually.

D. That the auto brakes were set to ‘max’ but that they did not sense any wheel brake deceleration.

E. The captain reported that he was unable to prevent the airplane from drifting left.

4. An NTSB air traffic control specialist has gather the following information: another Delta Air Lines MD-88 airplane landed on runway 13 about 3 minutes prior to flight 1086 (the FDR has been sent to the NTSB recorder lab and investigators will interview this flight crew in the coming days) and confirmed that air traffic controllers relayed the braking action reports to the flight crew of 1086,which were based on pilot reports from two other flights that landed several minutes prior to flight 1086. Both earlier flights reported the breaking action on the runway as “good”.

5. A preliminary readout of the Flight Data Recorder found:

A. That the autopilot was engaged until the airplane was about 230 feet above the ground.

B. That the airspeed during the final approach was about 140 knots and touchdown occurred at about 133 knots.

C. That the airplane’s heading deviated to the left and it departed the runway shortly after touchdown.

D. That there are degradations in recorded signal quality around the time the airplane departed the runway and extraction and verification of the data is continuing.

6. The quick access data recorder on flight 1086 was also recovered and that recorder is being readout at NTSB headquarters on March 9.

7. An NTSB meteorologist is examining the weather conditions at the time of the accident.

8. The Cockpit Voice Recorder group plans on convening at NTSB headquarters Tuesday, to begin developing the CVR transcript.

The investigation is ongoing and any future updates will be issued as events warrant.

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Delta Air Lines MD-88 N909DL skids off the runway while landing at LaGuardia Airport

Delta MD-88 skids off runway at LGA 3.5.15

Delta Air Lines (Atlanta) flight DL 1086 from Atlanta to New York’s La Guardia Airport skidded off the runway this morning while attempting to land at LGA in winter weather conditions. The McDonnell Douglas MD-88 (N909DL, msn 49540) with 127 passengers and five crew members was attempting to land on runway 13 at approximately 11:05 am. The aircraft veered off the runway to the left and came to a stop up on a berm with the nose penetrating the security fence (approximate position marked X below). The right wing appears to have sustained some damage although this is unconfirmed. There was a minor leak of fuel.

LGA AIrport Map (FAA)(LR) copy

Map Above: FAA.

According the NYNJPA, two aircraft had just landed on the same runway before DL 1086 and reported “good braking action”.

Below Photos: New York Fire Department: The nose and underside of N909DL also sustained damage.

Delta N909DL Nose (NYPD)

Delta N909DL overhanding the berm (NYFD)(LR)

All passengers and crew members safely exited the aircraft from the over-the-wing exits. Two passengers have been transported to a local hospital with minor injuries.

LaGuardia Airport was closed but has now reopened runway 4-22.

Delta issued this statement after the accident:

Delta employees, including volunteers of the Delta Care Team in and en route to New York, are assisting passengers of Delta flight 1086. Aircraft maintenance technicians, investigators and other Delta specialists also will arrive in New York shortly to assist with the investigation.

Delta Air Lines Flight 1086, a MD-88 en route from Atlanta to New York-LGA, exited Runway 13 during landing. The incident occurred at approximately 11 a.m. local time Thursday. There were 127 passengers and five crew members on board. Passengers deplaned and moved to the terminal on buses. Minor injuries have been reported.

The MD-88 involved in today’s incident was delivered new to Delta in 1987. The aircraft last had a major maintenance overhaul in December 2010. These overhauls are performed every seven or eight years, depending on aircraft type. Its most recent maintenance service check was March 3, 2015.

Delta has had approximately 230 cancellations today at New York-LGA as a result of winter weather and the closure of one runway. The airline is proactively assisting customers with their travel.

On March 6 Delta issued this update:

The aircraft (MD-88 N909DL) of Delta Air Lines Flight 1086 on March 5 has been moved to a hangar where investigators continue their work. Delta is fully cooperating with the National Transportation Safety Board who is leading the investigation.

Delta is restricted from commenting on the investigation in order to ensure that this important work goes unimpeded.

Delta teams have worked through the night to begin returning belongings to customers. Road conditions are gradually improving in New York City which will speed up this effort. In the meantime, Delta has refunded each customer the full price of their airfare and remains in touch to assist customers with any other immediate needs.

Top Twitter photo by Sarah Wagner.

 

Delta N909DL at LGA