ST434CH-D
Installation of Dual Trimble TNL8100 GPS Navigation Systems. Held by Duncan Aviation INC, which holds 316 approved modifications in all. Last revised September 12, 2008. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Lockheed Aircraft Corporation; Lockheed Aircraft Corporation; Lockheed Aircraft Corporation; Lockheed Aircraft Corporation; Lockheed Aircraft Corporation
- Models
- 382E, 382B, 382G, 382F, 382
- Type certificates
- A1SO, A1SO, A1SO, A1SO, A1SO
- On this site
- Lockheed Martin Corp 382 5 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.