| Tail Number / N-Number | N891PM |
| Manufacturer | BELL |
| Model | UH-1H |
| Year Built | 1971 |
| Manufacturer's Serial Number | 7120012 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 15 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | T53-L-13 |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 1,400 hp (1,044 kW) |
| Type of Registrant | Corporation |
| Owner Name | PORTER FLYING SERVICE INC |
| Street | 8562 AGUAS FRIAS RD |
| City | CHICO |
| State | CA |
| Zip Code | 95928-9521 |
| Region | Western-Pacific |
| County | Butte County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 2004-01-20 |
| Certificate Issue Date | 2003-11-07 |
| Last Action Date | 2021-08-25 |
| Expiration Date | 2028-10-31 |
| Status | Valid Registration |
| Mode S Code | 53045134 |
| Mode S Code Hex | AC4A5C |