ST09741SC
Installation of a Digital Flight Data Recorder (DFDR) expanded parameter upgrade using an SFIM ARINC 717 Digital Flight Data Acquisition Unit (DFDAU). Held by Aircraft Systems & Mfg, which holds 60 approved modifications in all. Last revised June 11, 2010. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- McDonnell Douglas Corporation
- Models
- MD-90-30
- Type certificate
- A6WE
- 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.