Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N6691.
| Tail Number / N-Number | N6691 |
| Manufacturer | BEECH |
| Model | 3T |
| Manufacturer's Serial Number | 43-35885 |
| 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 | 2 engines |
| Average Cruising Speed | 153 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | HAMILTON AIRCRAFT COMPANY INC |
| Street | 6501 S PARK AVENUE |
| City | TUCSON |
| State | AZ |
| Zip Code | 85706 |
| Region | Western-Pacific |
| Certificate Issue Date | 1969-11-26 |
| Last Status | Valid Registration |
| Cancellation Date | 1971-10-26 |
| Mode S Code | 52154043 |
| Mode S Code Hex | A8D823 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N6691.
| Tail Number / N-Number | N6691 |
| Manufacturer | COMMAND-AIRE |
| Model | 3C-3 |
| Year Built | 1928 |
| Manufacturer's Serial Number | 516 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 78 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SPRINGFIELD AIRPORT & AERONAUTICAL SCHOOL INC |
| Street | 1211 LIBERTY ST |
| City | SPRINGFIELD |
| State | MA |
| Zip Code | 01103 |
| Region | New England |
| Certificate Issue Date | 1930-07-30 |
| Last Status | Valid Registration |
| Cancellation Date | 1931-11-03 |
| Mode S Code | 52154043 |
| Mode S Code Hex | A8D823 |