SA02370LA
Installation of Mid-Continents 4300-313 Gyro Horizon in accordance with FAA Approved Master Data List (MDL), Drawing No. 2010 99-3443000, Revision C , dated September 09, 2011, or later FAA approved revision; and FAA Approved Airplane Flight Manual Supplement, Document No. 2010, Revision A, dated September 07, 2011, or later FAA approved revision. Held by Mid Continent Instruments INC.. Last revised September 12, 2011. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation
- Models
- 99, 99A, 99A (FACH), A99A, B99, C99
- Type certificates
- A14CE, A14CE, A14CE, A14CE, A14CE, A14CE
- On this site
- Beechcraft 99 Airliner 34 registered
Beechcraft B-99 6 registered
Beechcraft C-99 54 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 20, 2026.