The ST-27 is a modification of the de Haviland Heron 2 carried out by Saunders Aircraft of Gimli, Manitoba in 1975. The conversion included lengthening the cabin by 8 ft. 6 in. to provide accommodation for a maximum of 23 passengers, rebuilding the wing to incorporate a redesigned main spar and replacing the four Gipsy engines by two 750 shp Pratt & Whitney PT6A-34 turbo prop engines. Production ended in when financial backing was withdrawn in 1976.   Assets and rights to the aircraft were later taken over by Air Otonabee.

A total of 12 ST-27 conversions were completed by Saunders.

Only one ST-27 has ever crashed. ...

Aircraft produced

serial # Registration  
001 CF-YBM-x prototype, became ACES of Columbia as HK-1286
002 CF-XOK Skywest Airways
003 CF-FZR became ACES of Columbia as HK-1299
004 CF-YAP became ACES of Columbia as HK-1287
006 CF-LOL ST. Andrews Airways
007 CF-CNT Bayview Air Service
008 CF-CNX Air Otonabee
009 C-GCML Skywest Airways, Voyageur Airways
010 C-FFZP Skywest Airways
011 C-FJFH -
012 C-FHMQ -
013 C-GCAT -
see also ...
ST27 in our collection
Online Exhibits