SA3-86
RCA AVQ-50 radar antenna mount installation. Held by Sabreliner Aviation LLC, which holds 266 approved modifications in all. Last revised March 7, 2014. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation
- Models
- Army AT-11, C18S, D18C, D18S
- Type certificates
- A-2-582, A-757, A-765, A-765
- On this site
- Beechcraft C18 13 registered
Beechcraft D18 55 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 9, 2026.