SA3496WE
Installation of Elano P/N 099001-063 muffler in lieu of original Avcon muffler. Held by Del-Air, which holds 43 approved modifications in all. Last revised January 2, 2020. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Textron Aviation Inc.
- Models
- 172B
- Type certificate
- 3A12
- On this site
- Cessna 172 Skyhawk 20,670 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.