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DHC-6 Twin Otter Series 100
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Series 100

N915SA • N951SM


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

N915SA de Havilland Canada Inc., Downsview, ON. Rolled out 09-Dec-1967. First flight 21-Dec-1967.

• N915SM Skymark Airlines (re regd before delivery), Sacramento, CA. Regd Dec-1967.

• N951SM MAC - Miami Aviation Corporation, Opa Locka, FL Delivered 05-Jan-1968.

• N951SM Skymark Airlines, Sacramento, CA. Regd. 19-Jan-1968.

Airworthiness date: 10-Jan-1968.

Merged into Aero Commuter, Long Beach, CA 28-Mar-1969

Incident: Chico, CA  20-Feb-1969. Suffered a lightning strike on initial approach to Chico, CA airport. The pilot was landing in a low ceiling with rain and fog. Lightning was not forecast. The aircraft landed without further damage.

• N951SM Re-named Golden West Airlines, Van Nuys, CA. Regd Jul-1969.

Note: Was the first aircraft to be painted into the new Golden West colour scheme on 19-Jun-1969.

• N951SM Leased to Frontier Airlines (f/n 951), Denver, CO. Regd.24-Oct-1970.

• N951SM Returned to Golden West Airlines, Van Nuys, CA. Regd Apr-1974.

• N951SM Sold to Gibbs Flying Service (Gibbs Lease-Air Inc), San Diego, CA. Regd Jun-1975.

• N951SM SCAT - Southern California Air Transport, Hawthorne, CA. Regd.Mar-1982.

Accident 23-Nov-1983. Location unknown. Left engine torque reached its limit. The pilot aborted the take off and ran off the end of runway. The prop governor had an overspeed malfunction.

• N951SM Paralift Inc., Pasadena, CA. Regd Aug-1985.

• N951SM Perris Valley Skydiving Services, Perris, CA. (Paralift Inc, Pasadena, CA). Regd 05-Nov-1985.

• N951SM Paralift Inc., Perris CA. Regd 23-Jun-1992.

Noted at Springbank, AB  12-Jul-1993 – missing parts but intact.

• N951SM Sold to Alberta Aircraft Leasing, Las Vegas, NV. Regd 01-Oct-1993.

Noted at Eloy, AZ, 01-Mar-1994 – No titles

• N951SM Sold to Prestar Inc., Davis, OK. Regd 02-Jun-1994.

Operated by Skydance Skydiving, Yolo County Airport, CA.

• N951SM Summerfield Aviation, Jefferson, CO. (Robert & Colleen Hackendorp, Jefferson, CO dba)., Regd 08-Aug-1997

• N951SM Sold to Summerfield Aviation, Jefferson, CO. (Robert Hackendorp, Jefferson, CO). Regd 09-Dec-1997.

• N169TH Re regd to Summerfield Aviation, Jefferson, CO. (Robert Hackendorp, Jefferson, CO). Regd 25-Feb-1998 & 22 Feb 2001.

Note: Operated in 69th Battalion Special Operations Group colour scheme.

• N169TH Summerfield Aviation, Jefferson, CO. Regd 22Feb-2001

• N169TH Sold to Polestar Inc., Kailua Kona, HI, Regd 29-Mar-2004.

• N169TH Sold to Mid Pacific Air LLC., Kailua Kona, HI. Regd 14-Apr 2006. Canx 08 Jun-2016.

Note: Seen at South Lewis County Airport Toledo, WA 19-Jul-2017 with engines, doors cargo door sealed up and secured to ground with heavy weights. It had been parked for some time having been advertised for sale for $765,000US or on Wipline 13000 amphibious floats for $975,000US.

• N169TH Registration canx 08-Jun-2018 and transported to Perris, CA for dismantling.

Noted at Perris, CA 30-Sep-2018 & Mar-2019 without wings, tail and other parts.

Status unknown


N951SM still in Skymark Airlines titles at Long Beach, California.
Photo: Unknown photographer © April 1969 - Michael J. Ody Collection
N951SM at time of merger without titles at Long Beach.
Photo: Unknown photographer © May 1969 - Michael J. Ody Collection
N951SM of Golden West at Long Beach, California.
Photo: Unknown photographer © August 1968 - Erik Johannesson Collection
N951SM in full frontier markings at Los Angeles - KLAX.
Photo: T. Gibson © 18 November 1972 - Michael J. Ody Collection
N951SM at Montgomery Field - MYF, California, showing traces of Frontier markings.
Photo: Jack B. Hayes © 31 December 1974 - Kenneth I. Swartz Collection - Aird Archives
N951SM at Visalia Municipal - VIS, California.
Photo: R. Currie © 23 February 1979 - Michael J. Ody Collection
N951SM at Perris, California.
Photo: P. Kirkup © November 1982 - Michael J. Ody Collection
Photo: Tim Williams © 26 July 1986 - Michael J. Ody Collection
N169TH at Toledo - Winlock / TDO, Washington.
Photo: Duncan Kirk © 17 October 2010 - Erik Johannesson Collection