SA586EA
Installation of Hartzell anti- overspeed kit. Held by Hartzell Propeller, INC, which holds 10 approved modifications in all. Last revised December 19, 1972. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Schweizer Aircraft Corporation; Schweizer Aircraft Corporation; Schweizer Aircraft Corporation; Schweizer Aircraft Corporation; Schweizer Aircraft Corporation
- Models
- 269C, 269A-1, 269B, 269A, 269 Series
- Type certificates
- 4H12, 4H12, 4H12, 4H12, 4H12
- On this site
- Hughes 269 300 series helicopters 207 registered
Schweizer 269 300 series helicopters 212 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.