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msn 642
DHC-6 Twin Otter Series 300
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Series 300



• Registration • Activity and details of Owner/Operator and other historical information

• OH-KOG de Havilland Canada Inc., Downsview, Ontario. Rolled out date 22-Sep-1979. First flight 22-Sep-1979.

• OH-KOG Delivered to Kar-Air, Helsinki, Finland. 23-Oct-1979.

Arrived Helsinki 29-Oct-1979 on delivery.

• OH-KOG Leased to Altaflight, Details unknown. Jan-1983.

• OH-KOG Returned to Kar-Air, Helsinki, Finland, Apr-1983.

• OH-KOG Zimex Aviation, Glattbrugg, Switzerland, 30-Nov-1984.

• OH-KOG Returned to Kar-Air, Helsinki, Finland, 28-Feb-1985.

• OH-KOG Zimex Aviation, Glattbrugg, Switzerland Nov-1985.

• OH-KOG Returned to Kar-Air, Helsinki, Finland, 13-Mar-1986.

• OH-KOG Leased to Zimex Aviation, Glattbrugg, Switzerland, 02-Dec-1990.

• OH-KOG Returned to Kar-Air, Helsinki, Finland, Apr-1990.

• OH-KOG Transferred to Finnair Cargo, Vantaa, Finland, 28-Mar-2001.

• OH-KOG Finnair Cargo, Helsinki [Finnish Aircraft Finance, Helsinki] 23-Dec-2003.

• OH-KOG Sold to Finnish Aviation Academy, by-Oct-2004.

• C-GSGF Sold to Sander Geophysics Ltd., Ottawa, ON. Regd 01-Sep-2010. Re regd 26-May-2015.

Flew 25-Jul-2012 Dublin, Ireland - Reykjavik, Iceland Narssarssuaq, Greenland. 26-Jul-2012, Narssarssuaq, Greenland - Goose Bay, NL. 27-Jul-2012 Goose Bay, NL - Ottawa, ON.

Flew 01-Jul-2013 Ottawa, ON - Sept-Iles, QC - Goose Bay, NL 05-Jul-2013 Goose Bay, NL - Narsarsuaq, Greenland. Final destination unknown.

Flew 07-Sep-2013 Carthage, Tunisia - Lyon-Saint Exupery, France. 09-Sep-2013 Lyon-Saint Exupery - Glasgow-Abbotsinch, UK 10-Sep-2013. Glasgow-Abbotsinch, UK - Reykjavik, Iceland. Detail currently missing. 19-Sep-2013 Sondre Stromfjord, Greenland - Iqaluit, NU 20-Sep-2013. Iqaluit, NU - Wabush, NL. 21-Sep-2013 Wabush, NL - Ottawa, ON.

Flew 25-Oct-2013 Ottawa, ON - Watertown, NY 27-Oct-2013 Watertown, NY - Pittsburgh-Int'l., PA) - Indianapolis, IN. 28-Oct-2013 Indianapolis, IN - Kansas City, MO.

Flew 21-Jun-2015 Reykjavík, Iceland - Dublin-Weston Executive, Ireland for the Tellus Project for the Geological Survey of Ireland.

Accident: Weston, Dublin. 16-Aug-2015. The aircraft, which was on a geological survey flight, departed Weston Airport, Ireland, at 08:50 hrs local time. Just after take-off, Weston Tower advised the aircraft that it appeared that the nose cone had fallen from the aircraft. The Flight Crew checked the aircraft and realised that the nose cone which had been reported falling from the aircraft had come from the right-hand Electro Magnetic (EM) pod fitted to the tip of the right wing. The crew levelled the aircraft at 1,500 feet at which time they noted that aircraft control was being adversely affected by a significant amount of yaw to the right; this effect was felt through the flight controls. The Flight Crew transmitted a “PAN” call and advised Weston Tower that they would like to divert to Dublin Airport. The aircraft was transferred to Dublin ATC and was cleared to land on runway 28. On landing the aircraft was met by Airport Fire Seriesvice vehicles and was escorted to a parking location.

On 14 August 2015, the day before the event, in accordance with the maintenance instructions prescribed in the STC, the aircraft underwent a 125-hour Supplementary Inspection. This inspection called, inter alia, for the removal of “the EM pod nose and tail cones” and inspection of “the pod internal frames for cracks or other damage”. The personnel who carried out this check advised the Investigation that the Operator’s standard practice calls for the fitting of flagging tape when parts are removed and that the flagging tape should only be removed following re-installation of the removed part(s). On this occasion the personnel involved advised the Investigation that flagging tape was not fitted.

It was reported that during the EM Pod maintenance, while the nose cone was being reinstalled, a fault was detected with its sensor system. Re-installation of the nose cone was halted pending identification of the cause of the fault and consequently only the top two nose cone retaining screws were re-installed. Troubleshooting subsequently traced the origin of the sensor problem to a location inboard of the pod and the fault was rectified. The Inspection was then completed but the 14 remaining nose cone retaining screws were not re-installed.

Note: 17-Apr-2017. Departed base in Ottawa, ON heading to St. John's, NL.

• Current •


OH-KOG on survey flights from Prestwick - EGPK, Scotland.
Photo: Andrew Caldwell © 2004 - Aird Archives
OH-KOG with MALMILENTO titles applied.
Photo: Unknown photographer © c.2004 - John Mounce Collection - Aird Archives
OH-KOG on a visit to Newtonards - EGAD, Northern Ireland.
Photo: Kenneth J. Hearn © 06 May 2005 - Aird Archives
Photo: Kenneth J. Hearn © 06 May 2005 - Aird Archives
Photo: Kenneth J. Hearn © 01 July 2005 - Aird Archives
OH-KOG at Newtonards the following year.
Photo: Kenneth J. Hearn © 06 May 2006 - Aird Archives
Photo: Kenneth J. Hearn © 27 May 2006 - Aird Archives
C-GSGF of Sander Geophysics, at Kingston - CYGK, Ontario.
Photos: Neil Aird © 27 November 2014
C-GSGF departs runway 13 Reykjavik - BIRK , Iceland.
Photo: Kenneth I. Swartz © 21 June 2015