SA2613NM
Installation of a Lycoming O-540-L3C5D engine, Airesearch Turbocharger TA0401, McCauley B2D34C219/90DHB-8 propeller, Cessna 185 engine mount - including lug, and associated systems. Held by Seaplane Flying INC, which holds 18 approved modifications in all. Last revised June 21, 1984. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company
- Models
- 180G
- Type certificate
- 5A6
- On this site
- Cessna 180 Skywagon 2,605 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.