SA3-442
Hamilton Standard 22D30/6531-15, or Hartzell HC-93Z30-2D/10152--5 1/2, HCB3Z30-2D/10152-5 1/2, or HCB3Z30-2D/10160-6 propellers and related modifications. Held by Hamilton Aviation INC, which holds 7 approved modifications in all. Last revised January 1, 1960. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Raytheon Aircraft Company
- Models
- C-45 Series
- Type certificate
- A-765
- 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.