ST01235SE

Installation of the Honeywell Mark II ACARS (Aircraft Communication Addressing and Reporting System). Held by Honeywell International INC, which holds 599 approved modifications in all. Last revised November 19, 2021. System: other and general.

What it applies to

Kind of product: Aircraft
Design holder: Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS
Models: A310-203, A310-222, A310-304, A310-322, A310-324, A310-325
Type certificates: A35EU, A35EU, 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 21, 2026.