SA00971CH
Remove South Wind 940 series combustion heater and install C&D Associates, Inc. TSO-C20 approved Heater Kit 3 (P/N CD14010K3), Kit 4 (P/N CD12006K$), Kit 5 (P/N CD112145K5) or Kit 6 (P/N CD11215K6). Held by Hartzell Engine Technologies, LLC, which holds 45 approved modifications in all. Last revised February 11, 2016. System: heating, ice protection and utility systems.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.; Piper Aircraft Inc.; REVO Incorporated; REVO Incorporated; REVO Incorporated; REVO Incorporated; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.
- Models
- PA-23, PA-30, Lake LA-4-200, Lake LA-4, Lake LA-4A, Lake LA-4P, 190, 195, 195A, 195B, 310, 310A
- Type certificates
- 1A10, A1EA, 1A13, 1A13, 1A13, 1A13, A-790, A-790, A-790, A-790, 3A10, 3A10
- On this site
- Consolidated Aeronautics Inc. LAKE LA-4 15 registered
Consolidated Aeronautics Inc. LAKE LA-4-200 140 registered
Piper PA-23 Apache and Aztec 1,316 registered
Piper PA-30 Twin Comanche 879 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 5, 2026.