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Last updated: 24 October 2020
Status:Final
Date:Wednesday 12 September 2007
Time:01:36
Type:Silhouette image of generic DH8D model; specific model in this crash may look slightly different
de Havilland Canada DHC-8-402Q Dash 8
Operator:Scandinavian Airlines System - SAS
Registration: LN-RDS
C/n / msn: 4035
First flight: 2001
Total airframe hrs:11366
Cycles:14224
Engines: 2 Pratt & Whitney Canada PW150A
Crew:Fatalities: 0 / Occupants: 4
Passengers:Fatalities: 0 / Occupants: 48
Total:Fatalities: 0 / Occupants: 52
Aircraft damage: Substantial
Aircraft fate: Written off (damaged beyond repair)
Location:Vilnius Airport (VNO) (   Lithuania)
Phase: Landing (LDG)
Nature:International Scheduled Passenger
Departure airport:København-Kastrup Airport (CPH/EKCH), Denmark
Destination airport:Palanga Airport (PLQ/EYPA), Lithuania
Flightnumber:SK2748
Narrative:
SAS flight 2748, a DHC-8-402Q Dash 8, took off from Copenhagen, Denmark, on a flight to Palanga, Lithuania. The flight proceeded uneventfully until the final approach to Palanga. At an altitude of 2000 feet, the flight crew selected the landing gear down. However, the right-hand main gear extended but did not lock down and the landing gear doors did not close. The approach was aborted and the aircraft was positioned for another approach. The landing gear was recycled, but the warning remained.
The flight crew decided to divert to Vilnius Airport. Before landing at Vilnius, another attempt was made to release the undercarriage using a backup system, but the undercarriage control panel still showed unsafe the same warnings.
The no.2 (right) engine was shut down and the propeller was feathered prior to landing at Vilnius. When the plane touched down, right-hand main gear automatically retracted after a second. The no.1 engine was shut down and the aircraft slid off the side of the runway and stopped about 40 m to the right of the runway at 1150 m from the runway threshold.

Probable Cause:

Cause
The aircraft accident was caused by the separation of the piston rod of the extension/retraction actuator from the rod end during right hand main landing gear extension due to thread connection corrosion. The freely falling landing gear broke the apex hinge lugs of the stabilizer sections, the right hand landing gear did not lock in the extended position and collapse occurred when the aircraft was rolling after landing.

Accident investigation:
cover
Investigating agency: 
Status: Investigation completed
Accident number: K 06-07
Download report: Final report

Classification:
Landing gear collapse
Forced landing on runway

Sources:
» SAS Media release 12-9-2007


Follow-up / safety actions
The entire SAS fleet of DHC-8-400 planes was grounded as of September 12 following two similar accidents on September 9 and 12. Following an extensive inspection program and parts replacement (actuators in the main landing gear),
SAS began returning planes to service as of October 4, 2007. All aircraft were back in service on October 14, 2007.

FAA issued 1 Airworthiness Directive
TC issued 1 Airworthiness Directive

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Photos

photo of DHC-8-402-Q400-LN-RDS
accident date: 12-09-2007
type: de Havilland Canada DHC-8-402 Q400
registration: LN-RDS
photo of DHC-8-402-Q400-LN-RDS
accident date: 12-09-2007
type: de Havilland Canada DHC-8-402 Q400
registration: LN-RDS
photo of DHC-8-402-Q400-LN-RDS
accident date: 12-09-2007
type: de Havilland Canada DHC-8-402 Q400
registration: LN-RDS
 

Video, social media

Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from København-Kastrup Airport to Palanga Airport as the crow flies is 525 km (328 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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