SA2775SO
Installation of an emergency induction air door in accordance with Aircraft Specialist Installation Instructions, Alternate Air Door Adapter, dated April 30, 1990, or later FAA approved revision and Drawing Nos. AAD 16670-1, revised April 21, 1990; AAD 16670-2, revised April 21, 1990; and AAD16670-3, dated April 21, 1990, or later FAA approved revisions. Held by Waco Classic Aircraft Corporation, which holds 4 approved modifications in all. Last revised October 4, 2011. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Chaparral Motors Inc.; Chaparral Motors Inc.
- Models
- 2T-1A-2, 2T-1A-1
- Type certificates
- A18EA, A18EA
- On this site
- Great Lakes 2 168 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 8, 2026.