ST04218AT
Version 7.1 Software upgrade or Installation of the Aviation Communication & Surveillance Systems (ACSS) TCAS II, Model TCAS 2000, P/N 7517900-10020. The installation also includes a Mode S ATC Transponder System, Model XS-950, P/N 7517800-10007. Held by Aviation Communication and Surveillance Systems (Acss) LLC, which holds 40 approved modifications in all. Last revised June 20, 2018. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Airbus; Airbus; Airbus; Airbus
- Models
- A310-304, A310-322, A310-324, A310-325
- Type certificates
- A35EU, A35EU, A35EU, A35EU
- 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.