ST00338NY
Installation of Rockwell/Collins TCAS System (TTR-920 TCAS II and TPR-720 Mode S transponder), the Gables G6993-06 ATC/Mode S transponder/TCAS Control and Honeywell vertical speed indicator/ traffic resolution advisory indicator. Held by US Dept of Energy. Last revised June 10, 1996. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- DC-9-15F
- 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.