SA2356NM
Installation of Knots 2U, Ltd Landing/Recognition Lights Kit. Held by Knots 2U LTD., which holds 28 approved modifications in all. Last revised March 29, 2010. System: electrical power.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.
- Models
- PA-28-151, PA-28-161, PA-28-181, PA-28-201T, PA-28-236, PA-28R-201, PA-28R-201T, PA-28RT-201, PA-28RT-201T, PA-32-301, PA-32-301FT, PA-32-301T, PA-32-301XTC, PA-32R-301 (HP), PA-32R-301 (SP), PA-32R-301T, PA-32RT-300T
- Type certificates
- 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO, A3SO
- On this site
- Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,636 registered
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.