SA855GL
Installation of aileron and flap gap seals. Held by Knots 2U, LTD, which holds 50 approved modifications in all. Last revised May 7, 1997. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.
- Models
- PA-28R-201, PA-28-151, PA-28-161, PA-28-236, PA-28-181, PA-28RT-201, PA-28-201T, PA-28RT-201T, PA-28R-201T
- Type certificates
- 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13
- On this site
- Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,636 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.