SA4-925
Magnetic flight director 2000. Held by Clarkson Company. Last revised January 1, 1960. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bellanca Aircraft Corporation; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; Mooney Aircraft Corporation; Multitech Engineering Corporation; Multitech Engineering Corporation; Navion Aircraft Company Ltd.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company
- Models
- 14-19 Series, 172, 182, 175, 150, 180, 170, M20 Series, D-16, D-16A, Navion Series, PA-23 Series, PA-24 Series, PA-22 Series, 35 Series, 95 Series, 35 Series
- Type certificates
- 1A3, 3A12, 3A13, 3A17, 3A19, 5A6, A-799, 2A3, 2A1, 2A1, A-782, 1A10, 1A15, 1A6, 3A15, 3A16, A-777
- On this site
- Bellanca 14 282 registered
Cessna 150 7,993 registered
Cessna 170 2,085 registered
Cessna 172 Skyhawk 20,676 registered
Cessna 175 Skylark 925 registered
Cessna 180 Skywagon 2,605 registered
Cessna 182 Skylane 11,831 registered
Mooney M-20 6,247 registered
Piper PA-22 Tri-Pacer and Colt 2,942 registered
Piper PA-23 Apache and Aztec 1,316 registered
Piper PA-24 Comanche 2,428 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.