| Tail Number / N-Number | N121MP |
| Manufacturer | GRUMMAN AMERICAN AVN. CORP. |
| Model | AA-1C |
| Manufacturer's Serial Number | AA1C-0058 |
| 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 |
| Type of Registrant | Individual |
| Owner Name | MORO SHAWN D |
| Street | 12220 127TH AVE NE |
| City | LAKE STEVENS |
| State | WA |
| Zip Code | 98258-8313 |
| Region | Northwest Mountain |
| County | Snohomish County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2008-10-31 |
| Last Action Date | 2021-02-17 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 50054212 |
| Mode S Code Hex | A0588A |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N121MP.
| Tail Number / N-Number | N121MP |
| Manufacturer | NIHON |
| Model | YS-11 |
| Manufacturer's Serial Number | 2036 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 63 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 222 miles per hour |
| County | Snohomish County |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 1989-12-13 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N121MP.
| Tail Number / N-Number | N121MP |
| Manufacturer | PIKE MARTIN |
| Model | AUTOGYRO |
| Manufacturer's Serial Number | 1 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| County | Snohomish County |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |