The single Trella T-103 built, in 1930, was a two place open cockpit biplane powered by a 90hp Lambert engine.
Biplane
Trella T-102
The 1928 Trella T-102 N10509 c/n T-18 was an improved T-101 two place open cockpit biplane. Only one was built, powered by a 65hp Velie M-5 engine.
Trella T-101 Speedster
Trella built the T-101 NX6775.
The 1926 T-101 (Speedster) was a two place open cockpit biplane, powered by an 80hp Anzani and registered NX6775. Only one was built.
Trella T-100
The 1924 Trella T-100 was designed by Frank Trella. It was never flown because of insufficient take-off power, but used extensively for taxiing instruction. A single place, open cockpit biplane, it was powered by a 30hp Ford T conversion.
Trella Speedster T-17
A two-seat open cockpit biplane, powered by a Le Blond radial engine. Built in 1929, the Sportster T-17 cost $2,725.
Engine: 60hp LeBlond 5D or 55hp Velie M-5
Span: 27’6″
Length: 19’8″
Usefulload: 450 lb
Max speed: 110 mph
Cruise: 98 mph
Stall: 36 mph
Range: 400 mi
Seats: 2
Treffinger T-1-HD
The Treffinger T-1-HD N15777 was built in 1938 by Edward Y Treffinger as a two-place, open cockpit biplane. Power wasfrom a 27hp Harley-Davidson engine.
Travel Air Huff-Daland
Two 1928 Huff-Daland (ATC 2-26) were contract-built by Travel Air as Louisiana crop dusters. They were single-place, open cockpit biplanes, powered by a 90hp Curtiss OX-5.
Travel Air A-4E / A-6A / Curtiss Wright CW-A-6A
The 1930 A-4E NC479N was most likely an E-4000 with a 300hp Wright J-6 engine.
A-6A or Curtiss Wright CW-A-6A.
Travel Air 7000 / CH7000 / CW7000
The Travel Air 7000, or CH7000, of 1926 was a five place open cockpit and cabin biplane.
Probably only one was built, N4261 c/n 361.
The CW7000 was scheduled for a Wright J-4/-5 engine.
7000 / CH7000
Engine: Hisso E, 180hp
Wingspan: 34’8″
Seats: 5
Travel Air 12
The 1931 Travel Air 12-K (Curtiss-Wright) (ATC 406) was priced at $4,288. Two were built, NC437W and NC445W.
Twenty-seven of the 1931 Travel Air 12-Q (Curtiss-Wright) (ATC 401) were built, priced at $3,500.
Twelve of the 12-W (Curtiss-Wright) (ATC 407), the third in the Model 12 sport-trainer series, were built in 1931 at $4,455.
12-K
Engine: 125hp Kinner B-5
Wingspan: 28’10”
Length: 20’7″
Useful load: 636 lb
Max speed: 112 mph
Cruise speed: 95 mph
Stall: 45 mph
Range: 420 mi
Seats: 2-3
12-Q
Engine: 90hp Wright-Gypsy
Wingspan: 28’10”
Length: 21’5″
Useful load: 654 lb
Max speed: 105 mph
Cruise speed: 88 mph
Stall: 44 mph
Range: 600 mi
Seats: 2-3
12-W
Engine: 110hp Warner Scarab
Wingspan: 28’10”
Length: 20’10”
Useful load: 614 lb
Max speed: 117 mph
Cruise speed: 99 mph
Stall: 45
Range: 480 mi
Seats: 2-3
All Aero 