The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SA485SW

For 182H, 182J, 182K, 182L and 182M include (1) Full span double slotted flaps; (2) Drooped wing leading edge; (3) Aileron actuated drag plates; (4) Nose control surface; (5) Elevator down spring alteration; (6) Relocated pitot head. For 182N, 182P, and 182Q include nose control surface only. Held by Todd and Jo Peterson. Last revised July 3, 2001. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
Models
182L, 182J, 182N, 182P, 182Q, 182K, 182H, 182M
Type certificates
3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13, 3A13
On this site
Cessna 182 Skylane 11,831 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.