ST00662WI
Installation of Bendix/King EFS-50 Two-Tube (EFIS) Electronic Flight Instrumentation System. Held by Blackhawk Aerospace Technologies INC., which holds 30 approved modifications in all. Last revised May 18, 2021. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Textron Aviation Inc.; Textron Aviation Inc.
- Models
- 501, 551
- Type certificates
- A27CE, A27CE
- 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.