ST735CH-D
Installation of dual Universal Navigation Corporation UNS-1K flight management systems, using software (SCN) 602.x. Held by Duncan Aviation INC, which holds 316 approved modifications in all. Last revised September 25, 2008. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Hawker Beechcraft Corporation
- Models
- HS.125 Series 700A
- Type certificate
- A3EU
- On this site
- Hawker Siddeley HS.125 SERIES 700A 7 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 21, 2026.