SA09666AC
Installation of a Global Positioning Steering System (GPSS) consisting of a GPSS Adapter Controller 1C975-0 and a GPSS Annunciator/Switch 1C977-0 or 1C977-1. Held by Century Flight Systems INC, which holds 765 approved modifications in all. Last revised March 21, 2006. System: electrical power.
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.
- Models
- PA-28-151, PA-28-161, PA-28-180, PA-28R-200, PA-28R-201, PA-28R-201T, PA-28RT-201
- Type certificates
- 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13
- On this site
- Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,619 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 5, 2026.