SA01220WI
Installation of hydraulically controlled variable pitch 3 blade MTV-12-B/183-17 propeller. Held by Mt- Propeller Entwicklung GMBH (Germany), which holds 66 approved modifications in all. Last revised April 5, 2004. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 172D, 172E, 172F, 172K, 172L, 172M, 172N, 172P, F172D, F172F, F172G, F172H, F172K, F172L, F172M, F172N, F172P
- Type certificates
- 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU, A4EU
- On this site
- Cessna 172 Skyhawk 20,676 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.