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

SA2217WE

Installation of recontoured wing leading edge, raked wing tips, fuselage flap, wing stall fences, drooped ailerons in flaps down mode and dorsal fin (optional). (PA-32S-300 landplane only). Held by Sierra Industries LTD., which holds 94 approved modifications in all. Last revised July 31, 2017. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.
Models
PA-32-260, PA-32-300, PA-32S-300
Type certificates
A3SO, A3SO, A3SO
On this site
Piper PA-32 Cherokee Six, Lance and Saratoga 3,917 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.