SA09866SC
Installation of Honeywell TPE-331 engine IAW Texas Turbine Conversions, Inc. master drawing list no. 4001, Rev C, dtd 5/5/01, or later FAA approved revision. FAA approved Airplane FLight Manual Supplement TTC-FMS-1, dtd 5/5/01, or later FAA approved revision required. Held by Texas Turbine Conversions, INC, which holds 2 approved modifications in all. Last revised January 31, 2002. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bombardier-Rotax GmbH
- Models
- Otter DHC-3 (U-1A)
- Type certificate
- A-815
- 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.