Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N6987C.
| Tail Number / N-Number | N6987C |
| Manufacturer | SIKORSKY |
| Model | S-55 |
| Year Built | 1953 |
| Manufacturer's Serial Number | 55752 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 12 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | P&W |
| Engine Model | R1340 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 600 hp (448 kW) |
| Average Cruising Speed | 85 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | HELICOPTERS LTD |
| Street | 505 PARK AVENUE |
| City | NEW YORK |
| State | NY |
| Zip Code | 10022 |
| Country | US |
| Airworthiness Classification | Standard |
| Certificate Issue Date | 1970-09-24 |
| Last Action Date | 1977-01-14 |
| Last Status | Revoked – Canceled |
| Cancellation Date | 2014-09-03 |
| Mode S Code | 52245676 |
| Mode S Code Hex | A94BBE |