ST02315AT
Installation of a digital cockpit voice recorder, digital clock, annunciator dim/test unit, additional flight data recorder parameters, and upgraded to high frequency radio system and intercom system. Held by United States Navy Naval Air Systems Command Commercial Derivative Aircraft Program, which holds 6 approved modifications in all. Last revised November 26, 2007. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- DC-9-32
- Type certificate
- A6WE
- On this site
- Mcdonnell Douglas DC-9 93 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 22, 2026.