The chairman of Douglas based airline Manx2 says investigations are continuing to try and establish what caused a fatal crash in Ireland.
The plane, which was travelling from Belfast, crashed in thick fog at Cork Airport on 10 February.
Six people died and six others were injured in the accident.
Noel Hayes said: "Manx2 has never experienced anything like this in our five year history and the tragedy has been a terrible shock to us all."
The company, based in the Isle of Man, currently leases eight aircraft for scheduled flights in the UK and the Republic of Ireland, and carries in excess of 100,000 passengers per year.
'Worst day of my life'
The Belfast Cork service was launched last winter and is the only route to use this model of plane.
Speaking at a Press Conference in Belfast yesterday, Hayes said: "I' can honestly say this is the worst day of my career and the worse day of my life.
"My heart goes out to the families of those who have been killed and injured."
The aircraft was on its third attempt to land when the accident. Eye witnesses said the plane flipped over on landing and caught fire.
The aircraft involved was a Metro Liner leased from Flightline BCN in Spain, and had just come out of maintenance a week before the crash.
When asked about the safety record of the plane Hayes said: "They are the most frequently used commuter aircraft in the US. There are hundreds of them flying and they have a very good safety record operating these short commuter routes. The aircraft manufactures flying into Cork.
Manx2.com is now working closely with aviation authorities and the aircraft manufacturers to find out exactly what caused the crash.
Two flight recorders have already been removed from the scene.