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ASN Wikibase Occurrence # 204945
Last updated: 22 October 2018
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Date:23-JAN-2018
Time:09:35 LT
Type:Silhouette image of generic AT76 model; specific model in this crash may look slightly different
ATR 72-500 (72-212A)
Owner/operator:NoRRA Nordic Regional Airlines
Registration: OH-ATO
C/n / msn: 977
Fatalities:Fatalities: 0 / Occupants: 64
Other fatalities:0
Aircraft damage: None
Category:Serious incident
Location:Helsinki-Vantaa-Airport (HEL/EFHK) -   Finland
Phase: Take off
Nature:International Scheduled Passenger
Departure airport:Helsinki-Vantaa (HEL/EFHK), Finland
Destination airport:Riga Airport (RIX/EVRA), Latvia
Investigating agency: AIB Finland
Narrative:
NoRRA flight AY1071, an ATR 72-500 was involved in a serious runway incursion incident on takeoff from runway 22L at Helsinki-Vantaa-Airport, Finland.
Visibility was good at the time of the incident and the snow clearance was being done following the previous day’s snowfall. Two vehicle operators noticed the take-off and stopped ahead of the runway on the link taxiways. The third vehicle was working so far ahead close to the other end of the runway that the turboprop aircraft in question managed to get airborne before that point. The flight proceeded to the destination, Riga Airport, Latvia.
The time-consuming snow clearance operation had not been agreed on in advance, as prescribed by the Memorandum of Understanding signed between the ATC and aerodrome maintenance. Rather, each vehicle operator had individually asked the ATC for permission to work on the runway. The runway was not closed for the duration of the maintenance, which would have been indicated by the colour red on the ground control radar screen and, thus, warned the air traffic controller. The controller issued the take-off clearance after having both looked outside and checked the ground control radar. Each vehicle happened to be off of the runway at that point in time, therefore, the runway appeared to be free. Nor did the vehicles’ ‘strips’ on the ATC system’s touch screen monitor, i.e. the ‘e-Strip’ display, sufficiently capture the controller’s attention because they were the same colour as all of the other ‘strips’ on the display.

Weather reported at the time of the incident:
EFHK 230750Z 25004KT 9999 BKN043 M13/M15 Q1020 NOSIG
EFHK 230720Z 23005KT 9999 BKN042 M14/M16 Q1019 NOSIG

Sources:

https://www.flightradar24.com/data/aircraft/oh-ato#1035068b
http://www.lentoposti.fi/uutiset/norran_atr_72_ja_kunnossapidon_ty_koneet_olivat_t_rm_t_helsinki_vantaalla_otkes_tutkii_tapausta
https://twitter.com/OTKES_SIAF
https://www.savonsanomat.fi/kotimaa/Vakava-vaaratilanne-Helsinki-Vantaalla/1098773
http://www.onnettomuustutkinta.fi/en/index/ajankohtaista/aloitetuttutkinnattiedotteet/l2018-02vakavatvaaratilanteethelsinki-vantaanlentoasemalla23.1.2018ja24.1.2018.html

Accident investigation:
cover
  
Investigating agency: AIB Finland
Status: Investigation completed
Duration: 9 months
Download report: Final report


Revision history:

Date/timeContributorUpdates
23-Jan-2018 18:09 dolly 564 Added
23-Jan-2018 18:11 harro Updated [Source]
23-Jan-2018 19:29 harro Updated [Time, Aircraft type, Operator, Location, Departure airport, Destination airport, Source, Narrative]
02-Feb-2018 18:29 harro Updated [Source]
21-Oct-2018 17:11 harro Updated [Narrative, Accident report, ]

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