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ASN Wikibase Occurrence # 147906
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Time:03:42 UTC
Type:Silhouette image of generic AT72 model; specific model in this crash may look slightly different    
ATR 72-500 (72-212A)
Owner/operator:Flybe Nordic
Registration: OH-ATH
MSN: 769
Fatalities:Fatalities: 0 / Occupants: 31
Other fatalities:0
Aircraft damage: Minor
Location:Helsinki-Vantaa Airport (HEL/EFHK) -   Finland
Phase: Landing
Nature:Passenger - Scheduled
Departure airport:Tampere
Destination airport:Helsinki-Vantaa Airport (HEL/EFHK)
Investigating agency: SIAF
Confidence Rating: Accident investigation report completed and information captured
Veered off the runway during landing following a rudder control failure.
The Finnish Accident Investigation Board classified this as a serious incident and launched an investigation.

Probable cause and consequence
The serious incident was caused by the mechanically centred rudderís insufficient authority for directional control, which resulted in the aircraft veering off the runway.
Contributing factors
The rudderís Travel Limitation Unit (TLU) electric actuator broke and the TLU was left in the high speed (HI SPD) mode for the approach and landing, jamming the rudder.
Due to inadequate system awareness and the fact that the QRH did not clearly enough provide instructions for using the TLUís standby system, the flight crew did not switch on the TLUís standby system.
The right engineís propeller blade angles transitioned sooner into the BETA zone following the reduction of engine power at landing, which resulted in a large directional oscillation.


Accident investigation:
Investigating agency: SIAF
Status: Investigation completed
Duration: 1 year 1 month
Download report: Final report
Other occurrences involving this aircraft

31 Mar 2021 OH-ATH NoRRa 0 HEL/EFHK Helsinki-Vantaa Airport unk


Photo of OH-ATH courtesy

Helsinki - Vantaa (EFHK / HEL)
28 August 2020; (c) Pertti Sipilš

Revision history:

24-Aug-2012 08:48 harro Added
01-Nov-2013 19:13 harro Updated [Time, Total occupants, Nature, Departure airport, Source, Narrative]
31-Oct-2018 10:52 harro Updated [Source, Accident report, ]

Corrections or additions? ... Edit this accident description

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