| Tail Number / N-Number | N123EZ |
| Manufacturer | MUSSO |
| Model | RACER ORIGINAL |
| Manufacturer's Serial Number | M14372 |
| Aircraft Type | Fixed wing single engine |
| 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 |
| Type of Registrant | Corporation |
| Owner Name | INTERNATIONAL AIR SERVICES INC TRUSTEE |
| Street | 701 S CARSON ST STE 200 |
| City | CARSON CITY |
| State | NV |
| Zip Code | 89701-5239 |
| Region | Western-Pacific |
| County | Carson City |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2017-03-09 |
| Last Action Date | 2023-01-13 |
| Expiration Date | 2030-03-31 |
| Status | Valid Registration |
| Mode S Code | 50057523 |
| Mode S Code Hex | A05F53 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N123EZ.
| Tail Number / N-Number | N123EZ |
| Manufacturer | MUIRHEAD |
| Model | VARI-EZE |
| Year Built | 1978 |
| Manufacturer's Serial Number | 802 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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) |
| Type of Registrant | Individual |
| Owner Name | MUIRHEAD BRUCE M |
| Street | 892 WESTVIEW DR |
| City | BOULDER |
| State | CO |
| Zip Code | 80303 |
| County | Carson City |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1979-10-26 |
| Certificate Issue Date | 1978-04-05 |
| Last Action Date | 1978-04-07 |
| Last Status | Certificate of Registration has been revoked |
| Cancellation Date | 2009-06-25 |