ST02803LA
Installation of the upgraded Thales Radio Altimeter Transceiver Units ERT 550R. Held by Thales Avionics INC., which holds 14 approved modifications in all. Last revised February 23, 2023. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company
- Models
- 747-400 Series, 747-400F Series
- Type certificates
- A20WE, A20WE
- On this site
- Boeing 747 192 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.