ST01321WI
Reduced Vertical Separation Minimum (RVSM) non-group airworthiness approval of specific Gulfstream Aerospace LP Model 1125 Westwind Astra aircraft. Held by Kohlman Systems Research INC., which holds 23 approved modifications in all. Last revised May 23, 2005. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Gulfstream Aerospace LP
- Models
- 1125 Westwind Astra
- Type certificate
- A16NM
- On this site
- Israel Aircraft Industries 1125 36 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.