ST00428NY
Installation of a Sundstrand Turbomach T-62T-40C7B gas turbine auxiliary power unit with a Lear Siegler Model 23088-002 DC starter-generator. Held by Avmax Aviation Services INC. (Canada), which holds 17 approved modifications in all. Last revised June 15, 2022. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited
- Models
- DHC-8-201, DHC-8-202
- Type certificates
- A13NM, A13NM
- 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.