ST01028SE
Installation of the Honeywell DAA-4A Dual Antenna Drive Unit. 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; Airbus; Airbus; Airbus; Airbus; Airbus
- Models
- A330-301, A330-202, A330-322, A330-223, A330-321, A330-323
- Type certificates
- A46NM, A46NM, A46NM, A46NM, A46NM, A46NM
- On this site
- Airbus A330 155 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.