SA00725NY-D
Installation of Honeywell, Inc. Dual ADZ-810 Air Data Systems. Held by Contact Aviation LLC, which holds 12 approved modifications in all. Last revised May 15, 2012. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company
- Models
- 501
- Type certificate
- A27CE
- On this site
- Cessna 501 Citation I/SP 189 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 12, 2026.