Interstate S-1A Cadet

The Interstate Cadet, a tandem two-seat high-wing trainer built in small numbers in 1941-42 before the war ended civil production, best known as the type Cornelia Fort was flying over Pearl Harbor. The S-1A has a 65 hp Continental; the -65F, -85F and -90F have Franklin engines of the stated power. The type certificate later produced the Arctic Tern.

The variants

MODEL	YEARS	ACTIVE	TAILFAX SCORE	WHAT CHANGED
S-1A	1941–1942	66	Partial 19/30	65 hp Continental A-65
S-1A-65F	1941–1942	5	—	65 hp Franklin
S-1A-85F	1942	1	—	85 hp Franklin
S-1A-90F	1942	6	—	90 hp Franklin

Family fleet, active

FAA registry

NTSB events / 1,000, 10 yrs

25.6

2 events over 78 active aircraft, pooled across the family

Data as of: FAA registry Sep 28 · NTSB Oct 2 · scores Sep 30