SA862SW
Installation of Piper automatic flight system model AK187 consisting of altimatic III B-1 autopilot with optional automatic pitch trim, automatic aileron stabilizer, radio coupler, glide slope coupler, and optional radio coupler model 1C388-3. Held by Century Flight Systems INC, which holds 765 approved modifications in all. Last revised June 29, 1984. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The New Piper Aircraft Inc.
- Models
- PA-31 Series
- Type certificate
- A8EA
- On this site
- Piper PA-31 Navajo and Chieftain 935 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.