SA311NW
Installation of full span flaps by removing aileron and changing the deployment route of all flaps. Held by Sierra Industries INC, which holds 34 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.
- Models
- PA-32-300
- Type certificate
- 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 7, 2026.