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Federal Register/Vol. 78, No. 160/Monday, August 19, 2013 Federal Register / Vol. 78, No. 160 / Monday, August 19, 2013 / Rules and Regulations 50317 (3) The factor with wing flaps extended as 3A13 to include the new Model J182T model T182T. The regulations specified in CS–VLA 345. with the Societe de Motorisation incorporated by reference in the type (f) Kinds of operation. The kinds of Aeronautiques (SMA) Engines, Inc. certificate are commonly referred to as operation (day VFR or day and night VFR, SR305–230E–C1 which is a four-stroke, the ‘‘original type certification basis.’’ In whichever is applicable) in which the aeroplane may be used, must be stated. The air cooled, diesel cycle engine that uses addition, the J182T certification basis minimum equipment required for the turbine (jet) fuel. The Model No. J182T, includes special conditions and operation must be listed. which is a derivative of the T182 equivalent levels of safety. (g) Powerplant limitations. The following currently approved under Type If the Administrator finds that the information must be furnished: Certificate No. 3A13, is an aluminum, applicable airworthiness regulations (1) Limitation required by CS–VLA 1521. four place, single engine airplane with (i.e., 14 CFR part 23) do not contain (2) Information necessary for marking the a cantilever high wing, with the SMA adequate or appropriate safety standards instruments required by CS–VLA 1549 to 1553. SR305–230E–C1 diesel cycle engine and for the J182T because of a novel or (3) Fuel and oil designation. associated systems installed. unusual design feature, special (4) For two-stroke engines, fuel/oil ratio. In anticipation of the reintroduction conditions are prescribed under the (h) Placards. Placards required by CS–VLA of diesel engine technology into the provisions of § 21.16. 1555 to 1561 must be presented. small airplane fleet, the FAA issued In addition to the applicable Issued in Kansas City, Missouri, on August Policy Statement PS–ACE100–2002–004 airworthiness regulations and special 12, 2013. on May 15, 2004, which identified areas conditions, the J182T must comply with Earl Lawrence, of technological concern. Refer to this the fuel vent and exhaust emission Manager, Small Airplane Directorate, Aircraft policy for a detailed summary of the requirements of 14 CFR part 34 and the Certification Service. FAA’s development of diesel engine noise certification requirements of 14 [FR Doc. 2013–20151 Filed 8–16–13; 8:45 am] requirements. CFR part 36. The general areas of concern BILLING CODE 4910–13–P The FAA issues special conditions, as involving the application of a diesel defined in § 11.19, under § 11.38 and cycle engine are: they become part of the type • DEPARTMENT OF TRANSPORTATION The power characteristics of the certification basis under § 21.101. engine, • Special conditions are initially Federal Aviation Administration the use of turbine fuel in an applicable to the model for which they airplane class that is typically powered are issued. Should the type certificate 14 CFR Part 23 by gasoline fueled engines, for that model be amended later to • the vibration characteristics, both include any other model that [Docket No. FAA–2013–0413; Special normal and with an inoperative incorporates the same novel or unusual Conditions No. 23–259–SC] cylinder, • anticipated use of an electronic design feature, or should any other Special Conditions: Cessna Aircraft model already included on the same Company, Model J182T; Diesel Cycle engine control system, • the appropriate limitations and type certificate be modified to Engine Installation indications for a diesel cycle engine, incorporate the same novel or unusual design feature, the special conditions AGENCY: Federal Aviation and Administration (FAA), DOT. • the failure modes of a diesel cycle would also apply to the other model. ACTION: Final special conditions. engine. Novel or Unusual Design Features A historical record review of diesel The J182T will incorporate the SUMMARY: These special conditions are engine use in aircraft and part 23 following novel or unusual design issued for the Cessna Aircraft Company identified these concerns. The review features: The installation of an ADE. (Cessna) Model J182T airplane. This identified specific regulatory areas airplane will have a novel or unusual requiring evaluation for applicability to Discussion design feature(s) associated with the diesel engine installations. These installation of an aircraft diesel engine Several major concerns were concerns are not considered universally identified in developing FAA policy. (ADE). The applicable airworthiness applicable to all types of possible diesel regulations do not contain adequate or These include installing the diesel engines and diesel engine installations. engine and noting its vibration levels appropriate safety standards for this However, after reviewing the Cessna design feature. These special conditions under both normal operating conditions installation, the SMA engine type, the and when one cylinder is inoperative. contain the additional safety standards SMA engine requirements, and Policy that the Administrator considers The concerns also include Statement PS–ACE100–2002–004, the accommodating turbine fuels in airplane necessary to establish a level of safety FAA proposes engine installation and equivalent to that established by the systems that have generally evolved fuel system special conditions. The based on gasoline requirements, existing airworthiness standards. SMA engine has a Full Authority Digital DATES: Effective Date: August 19, 2013. anticipated use of a FADEC to control Engine Control (FADEC), which also the engine, and appropriate limitations FOR FURTHER INFORMATION CONTACT: Mr. requires special conditions. The FADEC and indications for a diesel engine Peter Rouse, Federal Aviation special conditions will be issued in a powered airplane. The general concerns Administration, Small Airplane separate notice. associated with the aircraft diesel Directorate, Aircraft Certification engine installation are as follows: Service, 901 Locust, Room 301, Kansas Type Certification Basis City, MO 64106; telephone (816) 329– Under the provisions of § 21.101, Installation and Vibration Requirements 4135; facsimile (816) 329–4090. Cessna must show that the J182T meets Fuel and Fuel System Related SUPPLEMENTARY INFORMATION: the applicable provisions of the Requirements regulations incorporated by reference in Limitations and Indications Background Type Certificate No. 3A13 or the Installation and Vibration On April 2, 2012, Cessna applied for applicable regulations in effect on the Requirements: These special conditions an amendment to Type Certificate No. date of application for the change to the include requirements similar to the VerDate Mar<15>2010 15:00 Aug 16, 2013 Jkt 229001 PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 E:\FR\FM\19AUR1.SGM 19AUR1 pmangrum on DSK3VPTVN1PROD with RULES 50318 Federal Register / Vol. 78, No. 160 / Monday, August 19, 2013 / Rules and Regulations requirements of § 23.901(d)(1) for ‘‘aircraft diesel engine’’ for this The Special Conditions turbine engines. In addition to the requirement. Accordingly, pursuant to the requirements of § 23.901 applied to Limitations and Indications authority delegated to me by the reciprocating engines, the applicant will Administrator, the following special be required to construct and arrange Section 23.1305 will apply, except conditions are issued as part of the type each diesel engine installation to result that the critical engine parameters for certification basis for Cessna Model in vibration characteristics that do not this installation that will be displayed J182T airplanes. exceed those established during the type include: certification of the engine. These (1) Power setting, in percentage, and 1. Engine Torque (Provisions Similar to vibration levels must not exceed (2) Fuel temperature. § 23.361(b)(1) and (c)(3)) vibration characteristics that a Due to the use of turbine fuel, the a. For diesel engine installations, the previously certificated airframe requirements for § 23.1521(d), as structure has been approved for, unless engine mounts and supporting structure applicable to fuel designation for must be designed to withstand the such vibration characteristics are shown turbine engines, as well as compliance to have no effect on safety or continued following: to § 23.1557(c)(1)(ii) will be in lieu of (1) A limit engine torque load airworthiness. The engine installation § 23.1557(c)(1)(i). must be shown to be free of whirl mode imposed by sudden engine stoppage due flutter and also any one cylinder Discussion of Comments to malfunction or structural failure. (2) The effects of sudden engine inoperative flutter effects. The engine Notice of final special conditions No. stoppage may alternatively be mitigated limit torque design requirements as 23–259–SC, with request for comments, to an acceptable level by utilization of specified in § 23.361 are also modified. for Cessna Aircraft Company, Model isolators, dampers clutches, and similar An additional requirement to consider J182T was published in the Federal provisions, so unacceptable load levels vibration levels and/or effects of an Register on May 16, 2013 (78 FR 28719). are not imposed on the previously inoperative cylinder was imposed. Also, One comment was received from Cessna certificated structure. a requirement to evaluate the engine Aircraft Company indicating AC–23–8B design for the possibility of, or effect of, is referenced in the ‘‘Discussion’’ b. The limit engine torque
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