SA3132WE
Installation of an alternate(printed circuits) ice protection system on the engine air intake. This installation is approved for use on airplanes modified in accordance with STC SA4-1100 only. Held by Sierracin/Thermal Systems. Last revised November 17, 1977. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Tracor Flight Systems Inc.
- Models
- 440 Military C-131E
- Type certificate
- 6A6
- 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.