SR01127SE
Modification of main rotor blade part number 61170-20201 in accordance with Master Drawing List RR 9633-08, Revision A, dated September 17, 2002, or later FAA approved revision. Retirement life for the modified main rotor blade, part number RR-61170-20201 is 21,200 total time in service. Held by Park Technologies, LLC. Last revised October 20, 2022. System: rotorcraft systems.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Croman Corporation; Siller Helicopters; Carson Helicopters Inc.; Sikorsky Aircraft; Sikorsky Aircraft; Sikorsky Aircraft; Sikorsky Aircraft Corporation
- Models
- SH-3H, SH-3A, S-61L, S-61L, S-61N, S-61NM, S-61A
- Type certificates
- R00004SE, R00008LA, H8EA, 1H15, 1H15, 1H15, H2EA
- On this site
- Croman Corp SH-3 5 registered
Sikorsky S-61 54 registered
Sikorsky SH-3 14 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 7, 2026.