| Tail Number / N-Number | N88ET |
| Manufacturer | RUSSELL A GELFAN |
| Model | GLASAIR |
| Year Built | 1980 |
| Manufacturer's Serial Number | 202 |
| 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 | LYCOMING |
| Engine Model | O-320-E2D |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 150 hp (112 kW) |
| Kit Manufacturer | STODDARD-HAMILTON |
| Kit Model | GLASAIR I |
| Type of Registrant | Individual |
| Owner Name | GELFAN RUSSELL A |
| Street | 7915 224TH ST SE |
| City | WOODINVILLE |
| State | WA |
| Zip Code | 98072-9774 |
| Region | Northwest Mountain |
| County | King County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2013-03-20 |
| Certificate Issue Date | 2012-06-05 |
| Last Action Date | 2021-01-23 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 53015762 |
| Mode S Code Hex | AC1BF2 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N88ET.
| Tail Number / N-Number | N88ET |
| Manufacturer | ESPINAL DOMINGO A |
| Model | ROTORWAY EXEC 90 |
| Manufacturer's Serial Number | 5090 |
| Aircraft Type | Rotorcraft |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | GRABOW THOMAS W |
| Street | 11864 BANDERA RD # 167 |
| City | HELOTES |
| State | TX |
| Zip Code | 78023-4132 |
| County | King County |
| Country | US |
| Certificate Issue Date | 1998-03-03 |
| Last Action Date | 2005-09-26 |
| Last Status | Valid Registration |
| Cancellation Date | 2005-12-02 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N88ET.
| Tail Number / N-Number | N88ET |
| Manufacturer | CARTER WILLIAM H |
| Model | EXECUTIVE 90 |
| Manufacturer's Serial Number | 5095 |
| Aircraft Type | Rotorcraft |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | HOFFMAN HELICOPTERS INC |
| Street | 147 NIMITZ DR A31 |
| City | PITI 96925 |
| County | King County |
| Certificate Issue Date | 1994-03-21 |
| Last Action Date | 1994-03-22 |
| Last Status | Valid Registration |
| Cancellation Date | 1994-11-21 |