SA2109SW-AC
Modification of the attitude selection and annunciation system to keep the autopilot from disconnecting when selecting another source of attitude information. Held by Federal Aviation Administration, which holds 17 approved modifications in all. Last revised May 14, 1984. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Israel Aircraft Industries Ltd.
- Models
- 1121B
- Type certificate
- A2SW
- 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 7, 2026.