Comparison of Adam A-500 and Grumman G-21 Goose

Attribute	Adam A-500 ×	Grumman G-21 Goose ×
General
Manufacturer	Adam Aircraft	Grumman
Model	Adam A-500	Grumman G-21 Goose
Country	United States	United States
Manufactured from (year)	2002	1937
Manufactured to (year)	2008	1945
Type	Twin Turboprops	Amphibious
Icao	A500	G21
Performance
Engine	2x Teledyne Continental TSIO-550E	2x Pratt & Whitney R-985-AN-6 Wasp Junio
Power, hp (hp)	350	450
Avionics	Avidyne Entegra and Garmin GPS	-
Max cruise speed (km/h)	426	324
Approach speed (km/h)	139	120
Travel range (km)	2,130	1,037
Service ceiling (m)	7,620	6,492
Rate of climb (m/sec)	9.14	5.59
Take off distance (m)	-	305
Landing distance (m)	-	457
Weights
Max take off weight (kg)	3,175	3,636
Max payload (kg)	700	1,170
Fuel tank capacity (l)	871	833
Dimensions
Seats	6	1
Cabin height (m)	1.3	-
Cabin width (m)	1.34	-
Cabin length (m)	4.1	-
Exterior length (m)	11.43	11.74
Tail height (m)	2.92	4.93
Fuselage diameter (m)	1.45	1.45
Wing span (m)	13.41	14.94
Wing tips	Small Winglets	No Winglets