| Tail Number / N-Number | N88604 |
| Manufacturer | CESSNA |
| Model | 421C |
| Year Built | 1978 |
| Manufacturer's Serial Number | 421C0604 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | GTSI0-520-F-K |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 435 hp (325 kW) |
| Total Horsepower | 870 hp (649 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | LLC |
| Owner Name | EXCELSIOR AIRCRAFT LEASING LLC |
| Street | 4420 FILBERT DR |
| City | LOVELAND |
| State | CO |
| Zip Code | 80538-1735 |
| Region | Northwest Mountain |
| County | Larimer County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1978-10-18 |
| Certificate Issue Date | 2021-08-06 |
| Last Action Date | 2021-08-06 |
| Expiration Date | 2028-08-31 |
| Status | Valid Registration |
| Mode S Code | 53033224 |
| Mode S Code Hex | AC3694 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N88604.
| Tail Number / N-Number | N88604 |
| Manufacturer | PIPER |
| Model | J3C-65 |
| Manufacturer's Serial Number | 16232 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 67 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SUNFLOWER JR COLLEGE & AGRICULTURAL HIGH SCHOOL |
| Street | XXXXX |
| City | MOORHEAD |
| State | MS |
| Zip Code | 38761 |
| Region | Southwestern |
| County | Larimer County |
| Certificate Issue Date | 1946-06-02 |
| Last Status | Valid Registration |
| Cancellation Date | 1949-04-07 |