SA3872NM
Installation of an AVCO Lycoming IO-540-R1A5 engine as modified per STC No. SE3873NM for the addition of induction air intercoolers. Held by Franklin Aircraft Engines INC., which holds 18 approved modifications in all. Last revised May 25, 2022. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.
- Models
- PA-24-260
- Type certificate
- 1A15
- On this site
- Piper PA-24 Comanche 2,427 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.