ST01805AT
Installation of Litton LTN-92 Triple Inertial Navigation Units with GPS antenna provision. (L-1011-385-3 293A-1217/1219/1220/1229/1238). Held by Newport Aeronautical Development, which holds 10 approved modifications in all. Last revised January 12, 1999. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Lockheed Aircraft Corporation
- Models
- L-1011-385-3
- Type certificate
- A23WE
- 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.