# Special Conditions: Bombardier Model DHC-8-400 Airplane; Automatic Takeoff Thrust Control System
> **Rule** · Final special conditions. · Published 1999-12-03 · Effective 1999-11-22 · 64 FR 67701
## Document
- **Document number:** 99-31396
- **Category:** other
- **Type:** Rule
- **Action:** Final special conditions.
- **Citation:** 64 FR 67701
- **Publication date:** 1999-12-03
- **Effective date:** 1999-11-22
- **FAA docket:** Docket No. NM162
## Abstract

These special conditions are issued for the Bombardier Model DHC-8-400 series airplanes. This new airplane will have a novel or unusual design feature associated with an Automatic Takeoff Thrust Control System (ATTCS). The applicable airworthiness regulations do not contain appropriate safety standards for approach climb performance using an ATTCS. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/12/03/99-31396/special-conditions-bombardier-model-dhc-8-400-airplane-automatic-takeoff-thrust-control-system)
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