SP01222WI (3 OF 3)
Installation of Aircraft Development propeller vortelators. Held by Aircraft Development CO, which holds 28 approved modifications in all. Last revised December 8, 2004. System: propeller.
What it applies to
- Kind of product
- Propeller
- Design holder
- Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Hartzell Propeller Inc.; Sensenich Wood Propeller Company Inc.; Sensenich Wood Propeller Company Inc.; Sensenich Wood Propeller Company Inc.; Sensenich Wood Propeller Company Inc.
- Models
- HC-B3P20-4, HC-B3P30-1, HC-B3P30-2, HC-F3YK-1, HC-F3YK-2, HC-F3YR-1, HC-F3YR-2, HC-M3YR-1, HC-H3YF-1, HC-H3YF-2, HC-H3YF-3, HC-H3YN-2, PHC-H3YF, PHC-H3YF-1, PHC-H3YF-2, All Wood Propellers (Active), Wood Propellers, W69EK, W69EK7
- Type certificates
- P29EA, P29EA, P29EA, P31EA, P31EA, P31EA, P31EA, P31EA, P35EA, P35EA, P35EA, P35EA, P35EA, P35EA, P35EA, P-170, P-170, P00001NY, P00001NY
- 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.