ST01142CH-D
Installation of an AlliedSignal Mark VII Enhanced Ground Proximity Warning System. Held by Electrosonics, which holds 76 approved modifications in all. Last revised February 17, 2000. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bombardier Inc.
- Models
- CL-600-1A11 (CL-600)
- Type certificate
- A21EA
- On this site
- Bombardier CL-600 Challenger and CRJ 1,656 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 7, 2026.