SR01210NY
Extension of main rotor blade, P/N 61170-20201 series. For model S-61A, serial numbers 61-063, 61-147, 61-232, 61-272; for model S-61N, 61-216, 61-220, 61-242, 61-744; for model S-61R, 61-551. Held by Carson Helicopters, INC, which holds 15 approved modifications in all. Last revised October 17, 2003. System: rotorcraft systems.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation
- Models
- S-61R (USAF CH-3E), S-61R (USAF CH-3C), S-61N, S-61A (U.S. Navy HSS-2), S-61A (USAF CH-3B), S-61A (U.S. Navy SH-3A)
- Type certificates
- 1H15, 1H15, 1H15, H2EA, H2EA, H2EA
- 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.