SA02624AT
This STC converts the Mooney M20L to essentially an M20R. The STC requires minor changes to the aircraft structure and includes installation of a Continental IO-550-N16B engine (The engine is operated at the performance limits of 280 hp at 2500 rpm just like the Continental IO-550-G used on the Mooney M20R.) The STC is to be accomplished in accordance with Mod Works Master Document List, MW8800-000, Revision "B", dated April 30, 2003, or later FAA approved revision. Held by Mod Works INC, which holds 34 approved modifications in all. Last revised November 25, 2003. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Mooney Aircraft Corporation
- Models
- M20L
- Type certificate
- 2A3
- On this site
- Mooney M-20 6,247 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 7, 2026.