Source: https://www.federalregister.gov/documents/2012/11/08/2012-25214/special-conditions-turbomeca-ardiden-3k-turboshaft-engine
Timestamp: 2017-09-24 06:09:54
Document Index: 726149615

Matched Legal Cases: ['art 33', '§\u200921', '§\u200921', '§\u200933', 'art 33', '§\u200933', '§\u200933', '§\u200933', '§\u200933', '§\u200933', '§\u200933']

A Proposed Rule by the Federal Aviation Administration on 11/08/2012
https://www.federalregister.gov/d/2012-25214 https://www.federalregister.gov/d/2012-25214
Send comments identified by docket number FAA-2012-1085 using any of the following methods:
Tara Fitzgerald, ANE-111, Engine and Propeller Directorate, Aircraft Certification Service, 12 New England Executive Park, Burlington, Massachusetts 01803-5299; telephone (781) 238-7130; facsimile (781) 238-7199; email tara.fitzgerald@faa.gov. For legal questions concerning this proposed rule, contact Vincent Bennett, ANE-7 Engine and Propeller Directorate, Aircraft Certification Service, 12 New England Executive Park, Burlington, Massachusetts 01803-5299; telephone (781) 238-7044; facsimile (781) 238-7055; email vincent.bennett@faa.gov.
A special condition is necessary to apply additional requirements for rating definition, instructions for continued airworthiness (ICA), instrumentation, and endurance testing because the applicable airworthiness standards do not contain adequate or appropriate airworthiness standards to address this design feature. The ICA requirement addresses the unknown nature of actual rating usage and associated engine deterioration. The applicant is expected to make an assessment of the expected usage, and publish ICAs and Airworthiness Limitations Section limits in accordance with those assumptions, such that engine deterioration is not excessive. The instrumentation requirement is to ensure that operators use this high-power rating within its limits, and that engine integrity is maintained. The endurance test requirement of 25 hours operation at 30-minutes HIP is similar to other special conditions recently issued. Because the Ardiden 3K model has a continuous one-engine inoperative (OEI) rating with limits equal to or higher than the proposed 30-minute HIP rating, the applicant may credit the test time performed at the continuous OEI rating toward the 25-hour requirement. However, test time spent at other rating elements of the test, such as takeoff or other OEI ratings (that are equal to or higher than HIP rating values), cannot be counted toward the 25 hours of required running.
If the FAA finds that the applicable airworthiness regulations in part 33, as amended, do not contain adequate or appropriate safety standards for the Turbomeca model Ardiden 3K turboshaft engine, because of a novel or unusual design feature, special conditions are prescribed under the provisions of § 21.16.
The FAA issues special conditions, as defined by 14 CFR 11.19, under 14 CFR 11.38, which become part of the type certification basis as specified in § 21.17(a)(2).
(a) §§ 33.1 Applicability and 33.3 General. As applicable, all documentation, testing and analysis required to comply with the part 33 certification basis must account for the 30-minute HIP rating, limits and usage.
(b) § 33.4, Instructions for Continued Airworthiness (ICA). In addition to the requirements of § 33.4, the ICA must:
(c) § 33.29, Instrument Connection. The engine must have a means or a provision for a means, which alerts the pilot when the 30-minute HIP rating time limit has expired.
(d) § 33.87, Endurance Test. In addition to the applicable requirements of §§ 33.87(a), 33.87(d) and 33.87(e) (for engines that combine 2.5 minute and continuous OEI ratings):
(2) Each § 33.87(d)(3) continuous OEI rating test period of 60 minutes duration run at power and limits equal to or higher than the 30-minute HIP rating, may be credited toward this requirement. Note that the test time required for the takeoff or other OEI ratings may not be counted toward the 25 hours of testing required at the 30-minute HIP rating.
Issued in Burlington, Massachusetts on September 17, 2012.
[FR Doc. 2012-25214 Filed 11-7-12; 8:45 am]