ST01022AT
Installation of MUA-45 Data Link System. Held by Honeywell International INC, which holds 599 approved modifications in all. Last revised December 17, 2021. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Airbus
- Models
- A320 Series
- Type certificate
- A28NM
- On this site
- Airbus A320 797 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.