TEMCO-Riley's D-16A Riley '55 Production
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Serial Number TTN-56
April 1955 - manufactured
- Used the airframe from Navion NAV-4-206 (NC8528H).
N123N
April 1955 - June 1955
owner unknown
USA
June 1955
Jack Riley
Dallas, TX, USA
June 1955 - March 1956
Walnut Creek Canning Co.
Walnut Creek, CA, USA
March 1956 - July 1957
Salinas Aircraft
Salinas, CA, USA
- June 1956 - Records indicate repairs were made to N123N following a forced landing.
July 1957 - September 1957
Pacific Aero Industries
San Francisco, CA, USA
September 1957 - August 1972
H.A. Sundean and Edith P. Sundean
Santa Cruz, CA, USA
August 1972 - April 1998
Raymond Nelson
Santa Cruz, CA, USA


N123N at Whitehorse, YT, Canada enroute to Alaska in 1982.
(K. McTavish)

Mr. and Mrs. Nelson with N123N.
(R. Nelson)
April 1998 - October 2001
Adventist World Aviation Inc.
Berrien Springs, MI, USA


N123N undergoing major maintenance and servicing.
- Damaged in a collapse of the nose landing gear.
2007 - present
Jesse Loftquist
Point Roberts, WA, USA

N123N, seen just before being disassembled to provide parts
for another Twin Navion rebuild. (J. Loftquist)
- 2007 - Used as a donor airframe for parts needed in the rebuild of TTN-51.
Current status: Scrapped