SA2634SO
Installation of a Collins ALT-55 radio altimeter system and Kollsman/TDC Type 522 servo altimeter, radio barometric system with type995 radio altimeter converter with voice terrain advisories. Held by Jet Aviation Associates, LTD, which holds 13 approved modifications in all. Last revised October 13, 1989. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Gulfstream Aerospace Corporation
- Models
- G-1159
- Type certificate
- A12EA
- On this site
- Gulfstream G-1159 Gulfstream II and III 42 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.