ST00554DE
Installation of a Co-Pilot's Digital Air Data Display Unit and relocation of Standby Pneumatic Altimeter. For installation on models 650, Citations III and Citation VI. Held by Aeromech Incorporated, which holds 171 approved modifications in all. Last revised March 24, 2006. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company
- Models
- 650
- Type certificate
- A9NM
- On this site
- Cessna 650 Citation III, VI and VII 201 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.