| Tail Number / N-Number | N4991R |
| Manufacturer | CESSNA |
| Model | A188B |
| Year Built | 1975 |
| Manufacturer's Serial Number | 18802479T |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | IO 520 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 285 hp (213 kW) |
| Average Cruising Speed | 108 miles per hour |
| Type of Registrant | Government |
| Owner Name | EAST SIDE MOSQUITO ABATEMENT DISTRICT |
| Street | 2000 SANTA FE AVENUE |
| City | MODESTO |
| State | CA |
| Zip Code | 95355 |
| Region | Western-Pacific |
| County | Stanislaus County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1976-01-09 |
| Certificate Issue Date | 1991-08-07 |
| Last Action Date | 2020-08-17 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 51432022 |
| Mode S Code Hex | A63412 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4991R.
| Tail Number / N-Number | N4991R |
| Manufacturer | CESSNA |
| Model | 172H |
| Year Built | 1967 |
| Manufacturer's Serial Number | 17256345 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Government |
| Owner Name | UNITED STATES AIR FORCE |
| Street | PENTAGON BUILDING |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20301 |
| Region | Eastern |
| County | Stanislaus County |
| Certificate Issue Date | 1967-07-14 |
| Last Status | Valid Registration |
| Cancellation Date | 1970-07-06 |