ST01713WI
Modification of a Rockwell Collins, Inc. AHC-85( ) (AHRS) installation. Held by Rockwell Collins INC, which holds 359 approved modifications in all. Last revised October 29, 2013. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Embraer S.A.; Embraer S.A.; Embraer S.A.; Embraer S.A.; Embraer S.A.
- Models
- EMB-120, EMB-120ER, EMB-120FC, EMB-120QC, EMB-120RT
- Type certificates
- A31SO, A31SO, A31SO, A31SO, A31SO
- On this site
- Embraer EMB-120 41 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 21, 2026.