Special Conditions: SNECMA, Silvercrest-2 SC-2D; Rated 10-Minute One Engine Inoperative Takeoff Thrust at High Ambient Temperature
Special conditions are rules the FAA writes for one design when the standard certification rules do not cover something new about it. These were published June 26, 2017 for Snecma. System: engine.
What it applies to
- Applicant
- Snecma
- Makes
- SNECMA
- Models
- —
- Published
- June 26, 2017
- Effective
- November 30, 2014
- The FAA's document
- On the FAA's site
The FAA's summary their words, unchanged
These final special conditions are issued for the SNECMA, Silvercrest-2 SC-2D engine model. This engine will have a novel or unusual design feature--an additional takeoff rating that increases the exhaust gas temperature (EGT) limit to maintain takeoff thrust in certain high ambient temperature conditions with one engine inoperative (OEI) for a maximum of 10 minutes. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These final 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: FAA special conditions (final) from the Dynamic Regulatory System; the Federal Register carries the same notices.