SA1117CE-D
Installation of Collins AP-106 autopilot. (DHC-6 Series S/N 130, 210, 231 AND SUBSEQUENT). Held by Collins Radio Group, which holds 27 approved modifications in all. Last revised June 1, 1974. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bombardier-Rotax GmbH
- Models
- DHC-6 Series
- Type certificate
- A9EA
- On this site
- Dehavilland DHC-6 114 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.