| Tail Number / N-Number | N4023S |
| Type of Reservation | Reserved to manufacturer - temporary number |
| Reserving Party Name | BOEING CO |
| Street | 737 LOGAN AVE N |
| City | RENTON |
| State | WA |
| Zip Code | 98057 |
| Date Reserved | 2019-08-02 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4023S.
| Tail Number / N-Number | N4023S |
| Manufacturer | AYRES CORPORATION |
| Model | S2R-R1820 |
| Manufacturer's Serial Number | R1820004DC |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | 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 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1988-06-03 |