| Tail Number / N-Number | N4204 |
| Manufacturer | EUROCOPTER |
| Model | AS 350 B3 |
| Year Built | 2007 |
| Manufacturer's Serial Number | 4204 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | TURBOMECA |
| Engine Model | ARRIEL 2B1 |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 747 hp (557 kW) |
| Type of Registrant | Corporation |
| Owner Name | AIR METHODS CORP |
| Street | 5500 S QUEBEC ST STE 300 |
| City | GREENWOOD VILLAGE |
| State | CO |
| Zip Code | 80111-1914 |
| Region | Northwest Mountain |
| County | Arapahoe County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2007-03-14 |
| Certificate Issue Date | 2013-02-14 |
| Last Action Date | 2021-09-13 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 51177203 |
| Mode S Code Hex | A4FE83 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4204.
| Tail Number / N-Number | N4204 |
| Manufacturer | MOONEY AIRCRAFT CORP. |
| Model | M20 |
| Year Built | 1955 |
| Manufacturer's Serial Number | 1006 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 126 miles per hour |
| Type of Registrant | Individual |
| Owner Name | GREENLEAF EDGAR F |
| Street | RD # 1 |
| City | KIRKWOOD |
| State | PA |
| Zip Code | 17536 |
| Region | Eastern |
| County | Arapahoe County |
| Certificate Issue Date | 1965-08-31 |
| Last Status | Valid Registration |
| Cancellation Date | 1977-08-19 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4204.
| Tail Number / N-Number | N4204 |
| Manufacturer | FOKKER |
| Model | F-VII (TRI-MOTOR) |
| Year Built | 1928 |
| Manufacturer's Serial Number | 5208 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 3 engines |
| Type of Registrant | Corporation |
| Owner Name | REGISTRATION PENDING |
| Street | NONE |
| City | LE ROY |
| State | NY |
| Zip Code | 14482 |
| Region | Eastern |
| County | Arapahoe County |
| Last Status | Valid Registration |
| Cancellation Date | 1929-05-17 |
| Exported To | ARGENTINA |