ST00831WI
Installation of the Sigma Tek 1U619-( ) VHF COM/NAV/ATC Radio Control Panel with Collins VHF 22(C/D) radios to provide 25kHz and 8.33 kHz channel spacing in Cessna Airplanes listed on the attached FAA Approved Model List (AML) No. ST00831WI, dated November 4, 1999, in accordance with Cessna Aircraft Company, Master Document List No. CF90055, Revision B, dated October 21, 1999 or later FAA approved revision. Held by Textron Aviation INC., which holds 68 approved modifications in all. Last revised March 9, 2018. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
- Models
- 500, 550, S550, 650
- Type certificates
- A22CE, A22CE, A22CE, A9NM
- On this site
- Cessna 500 Citation I 63 registered
Cessna 550 Citation II 500 registered
Cessna 650 Citation III, VI and VII 201 registered
Cessna S550 94 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 5, 2026.