SR01392NY
In accordance with Carson Services, Inc. Report CSI-01-1001 Revision A dated August 23, 2001, increase Category B takeoff and landing altitude limit to 12,000 ft Hd. In addition, increase enroute and external load altitude limit to 14,000 ft Hd. Held by Carson Helicopters, INC, which holds 15 approved modifications in all. Last revised September 24, 2001. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Sikorsky Aircraft Corporation
- Models
- S-61N
- Type certificate
- 1H15
- On this site
- Sikorsky S-61 54 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 21, 2026.