SE01461NY
Propeller pitch control system modification. Hartzell HC-E4N-5D/D9690(B) propeller installed per STC SA01462NY. Not approved on serial numbers TC-398 through TC-418. Held by Hartzell Propeller INC, which holds 90 approved modifications in all. Last revised February 21, 2002. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- AlliedSignal Inc.; AlliedSignal Inc.
- Models
- TPE331-3U, TPE331-10UA
- Type certificates
- E4WE, E4WE
- 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.