| Tail Number / N-Number | N531M |
| Manufacturer | CESSNA |
| Model | 340A |
| Year Built | 1978 |
| Manufacturer's Serial Number | 340A0534 |
| Aircraft Type | Fixed wing multi engine |
| 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 | CONT MOTOR |
| Engine Model | TSIO-520 SER |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 300 hp (224 kW) |
| Total Horsepower | 600 hp (448 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SPILLER MICHAEL L |
| Street | 4138 OAKS CIR NE |
| City | PIEDMONT |
| State | OK |
| Zip Code | 73078 |
| Region | Southwestern |
| County | Canadian County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1978-07-31 |
| Certificate Issue Date | 2017-05-12 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 51532467 |
| Mode S Code Hex | A6B537 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N531M.
| Tail Number / N-Number | N531M |
| Manufacturer | CESSNA |
| Model | 150M |
| Year Built | 1975 |
| Manufacturer's Serial Number | 15077673 |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | 0-200 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Average Cruising Speed | 81 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ATKIN AIR LLC |
| Street | 1420 FLIGHTLINE DR STE B |
| City | LINCOLN |
| State | CA |
| Zip Code | 95648-9439 |
| County | Canadian County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1976-01-06 |
| Certificate Issue Date | 1999-11-17 |
| Last Action Date | 2008-11-18 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2008-12-15 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N531M.
| Tail Number / N-Number | N531M |
| Manufacturer | LINCOLN |
| Model | PT |
| Manufacturer's Serial Number | 310 |
| 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 | 75 miles per hour |
| Type of Registrant | Individual |
| Owner Name | CARLSON ELWIN A |
| Street | GENERAL DELIVERY |
| City | HARCOURT |
| State | IA |
| Zip Code | 50544 |
| Region | Central |
| County | Canadian County |
| Certificate Issue Date | 1936-12-16 |
| Last Status | Valid Registration |
| Cancellation Date | 1938-01-11 |