Delta 1086 Investigation
As noted in our March 5 post (refer to link), Delta Air Lines 1086 from Hartsfield-Jackson Atlanta International Airport (ATL) to New York City LaGuardia Airport (LGA) skidded off Runway 13, hit the fence about 4,100 feet to the end and stopped just short of Flushing Bay.
National Transportation Safety Board
The National Transportation Safety Board is conducting a routine investigation to determine the cause(s) of the March 5 accidet. There are 4 possible scenarios being considered at the moment:
1. Weather condition – there was snow and wind at the time of landing;
2. Braking system malfunctioned – this has not be proven as yet though communication between the control tower and the pilot did not indicate this was the case;
3. Pilot error – whether pilot misjudged the dryness of the runway and braked too much causing the skid. There was no indication that the aircraft landed too far into the runway and required heavy braking to meet the turnoff;
4. Runway – it may have been too icy on the runway. Two aircrafts landed safely prior to Delta 1086 and the runway was recently cleared of snow.
The NTSB issued an updated statement on March 9, 2015 regarding the accident (refer to link)
The cause is always a combination of many reasons. It usually take a couple of months for the report to be issued regarding the accident. As of writing, no one was reported to be seriously injured and Delta Air Lines is cooperating fully with the authorities.
Here are some key points noted by the NTSB so far:
- Maintenance – last major check occurred in September 2014 and last overnight check was conducted recently on March 2, 2015
- Crew – pilot indicated that he could not steer the aircraft back to the center once it started skidding to the left immediately after touchdown on Runway 13
- Brakes – auto brakes were on at “MAX” but the crew did not sense any wheel brake deceleration (i.e. that it was not working as intended)
- Airspeed of 140 knots on approach and 133 knots on touchdown – This is within normal range for the aircraft (though on the higher side)
- There was another Delta MD88 aircraft that landed just before Delta 1086 and did not report any problems