Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N54HQ.
| Tail Number / N-Number | N54HQ |
| Manufacturer | EUROCOPTER/FRANCE |
| Model | AS355N TWINSTAR |
| Year Built | 1994 |
| Manufacturer's Serial Number | 5567 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Corporation |
| Owner Name | ALTAIR HELICOPTER SERVICE LLC |
| Street | PO BOX 1064 |
| City | LINCOLN |
| State | NH |
| Zip Code | 03251-1064 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1994-09-23 |
| Certificate Issue Date | 2000-07-11 |
| Last Action Date | 2005-01-18 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2005-07-06 |
| Exported To | RUSSIAN FEDERATION |
| Mode S Code | 51553121 |
| Mode S Code Hex | A6D651 |