SA3069SW-D
Installation of Mitchell automatic flight system model AK539 consisting of Century IV autopilot or AK539FD, consisting of Century IV flight director autopilot with optional remove annunciator. Held by Century Flight Systems INC, which holds 765 approved modifications in all. Last revised June 20, 1984. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Vulcanair S.p.A.
- Models
- P 68B
- Type certificate
- A31EU
- On this site
- Vulcanair Spa P68 10 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.