ST01855CH-D
Installation of Honeywell N1 Digital Electronic Engine Controls (DEEC). Held by Honeywell International INC, which holds 599 approved modifications in all. Last revised September 23, 2011. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Gulfstream Aerospace LP; Israel Aircraft Industries Ltd.; Israel Aircraft Industries Ltd.
- Models
- 1125 Westwind Astra, 1124, 1124A
- Type certificates
- A16NM, A2SW, A2SW
- On this site
- Israel Aircraft Industries 1124 73 registered
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 20, 2026.