ST01984NY-D
Installation of Honeywell Mk VI Enhanced Ground Proximity Warning System with an Avtech Display Switching Unit. Held by Contact Aviation LLC, which holds 12 approved modifications in all. Last revised December 29, 2011. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- BAE Systems (Operations) Limited
- Models
- Jetstream Model 4101
- Type certificate
- A41NM
- 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 12, 2026.