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United States Department of Transportation United States Department of Transportation

Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
20-66B Propeller Vibration and Fatigue

This evaluation uses fatigue and structural data obtained in accordance with 14 CFR part 35.

Active ANE-111 2011-03-24
33.91-1 Engine System and Component Tests

This advisory circular (AC) provides guidance and acceptable methods, but not the only methods, that may be used to demonstrate compliance with the engine component and systems test requirements under Title 14 of the Code of Federal Regulations (14 CFR), part 33, specifically § 33.91, paragraphs (a) and (b).

Active ANE-111 2010-12-09
33.7-1 Ratings and Operating Limitations for Turbine Engines (Sections 33.7 and 33.8)

This advisory circular (AC) provides information and guidance on turbine engine compliance under part 33 of Title 14 of the Code of Federal Regulations (14 CFR), specifically §§ 33.7, Engine ratings and operating limitations, and 33.8, Selection of engine power and thrust ratings.

Active ANE-111 2010-06-28
35.37-1B Propeller Fatigue Limits and Evaluation

This advisory circular (AC) provides guidance and describes methods, but not the only methods, for demonstrating compliance with § 35.37, Propeller fatigue limits and evaluation, of Title 14 of the Code of Federal Regulations (14 CFR).

Active ANE-111 2011-03-24
33.74/92-1B Turbine Engine Continued Rotation and Rotor Locking

This advisory circular (AC) provides guidance to demonstrate compliance with Title 14 of the Code of Federal Regulations (14 CFR), Section 33.74, Continued Rotation and Section 33.92, Rotor Locking Tests.

Active ANE-111 2016-06-23
33-8 Guidance for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts under Test and Computation

This advisory circular (AC) provides guidance for developing substantiation data to support the design approval of critical and complex turbine engine and auxiliary power unit (APU) parts produced under parts manufacturer approval (PMA).

Active ANE-111 2009-08-19
20-18B Qualification Testing of Turbojet and Turbofan Engine Thrust Reversers

It does not address aircraft-level effects of the installation and use of a thrust reverser.

Active ANE-111 2015-07-07
33.83-1 Comparative Method to Show Equivalent Vibratory Stresses and High Cycle Fatigue Capability for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts

PMA applicants may use this comparative modal and high-cycle fatigue (HCF) method to show the vibratory stresses and HCF capability of their proposed blades or vanes are equivalent to those of the type design parts.

Active ANE-111 2009-09-08
33.27-1A Engine and Turbosupercharger Rotor Overspeed Requirements of 14 CFR § 33.27.

This advisory circular (AC) provides guidance and acceptable methods, but not the only methods, for demonstrating compliance with the rotor strength (overspeed) requirements of Title 14 of the Code of Federal Regulations (14 CFR) 33.27.

Active ANE-111 2011-07-18
33-7A Guidance for 30-Second and 2-Minute One-Engine-Inoperative (OEI) Ratings for Rotorcraft Turbine Engines

This advisory circular (AC) provides guidance and acceptable means, but not the only means, for demonstrating compliance with the specific requirements applicable to 30-second and 2-minute One-Engine-Inoperative (OEI) rotorcraft turbine engine ratings in part 33 of Title 14 of the Code of Federal Regulations (14 CFR part 33).

Active ANE-111 2009-06-11
33.4-3 Instructions for Continued Airworthiness, Aircraft Engine High Intensity Radiated Fields (HIRF) and Lightning Protection Features - Including Change 1

This advisory circular (AC) change updates the references provided in the original document. The AC change number and the date of the change are shown at the top of each applicable page.

Active ANE-111 2005-09-16
33-11 Oxidation, Hot Corrosion, Thermal Fatigue, and Erosion Characteristics Testing to Support 14 CFR, Part 33, § 33.15, Compliancefor Turbine Engines

These equivalencies relate to oxidation, hot corrosion, and thermal fatigue and erosion characteristics in the engine environment.

Active ANE-111 2014-09-23
33.87-1A Engine Overtorque Test, Calibration Test, Endurance Test, and Teardown Inspection for Turbine Engine Certification (§§ 33.84, 33.85, 33.87, 33.93)

This advisory circular (AC) provides a method of compliance for the test requirements of Title 14, of the Code of Federal Regulations (14 CFR) 33.84 (engine overtorque test) when the applicant chooses to run that test as part of the endurance test of § 33.87. It also provides information and guidance on the test requirements of § 33.85 (calibration test), § 33.87 (endurance test), and § 33.93 (teardown inspection).

Active ANE-111 2015-03-09
33-2C General Type Certification Guidelines for Turbine Engines

This AC applies to certain sections of Title 14 of the Code of Federal Regulations (14 CFR) parts 21, 33, and 45, and describes or references methods of compliance that may be acceptable for engine type certification work.

Active ANE-111 2013-06-25
33.15-2 Manufacturing Processes for Premium Quality Nickel Alloy for Engine Rotating Parts

This advisory circular (AC) provides information and guidance on compliance with the nickel materials suitability and durability requirements in part 33 of Title 14 of the Code of Federal Regulations (14 CFR part 33).

Active ANE-111 2011-02-04
33.28-3 Guidance Material For 14 CFR §33.28, Engine Control Systems

This advisory circular (AC) provides guidance and describes acceptable methods, butnot the only methods, for demonstrating compliance with the engine control systems requirements of § 33.28 of Title 14 of the Code of Federal Regulations (14 CFR part 33) at amendment level 3326.

Active ANE-111 2014-05-23
35.23-1 Guidance Material for 14 CFR § 35.23, Propeller Control System

This advisory circular (AC) provides definitions and guidance for demonstrating compliance with the propeller control system requirements of Title 14 of the Code of Federal Regulations (14 CFR 35.23).

Active ANE-111 2011-10-21
33.75-1A Guidance Material For 14 CFR 33.75, Safety Analysis (With Change 1)

This advisory circular (AC) provides guidance and describes acceptable methods, but not the only methods, for demonstrating compliance with the safety analysis requirements of § 33.75 of Title 14 of the Code of Federal Regulations (14 CFR).

Active ANE-111 2007-09-26
33.64-1 Guidance for Pressurized Engine Static Parts

This advisory circular (AC) provides definitions and guidance regarding compliance with the strength requirements for pressurized engine static parts in § 33.64 of Title 14 of the Code of Federal Regulations (14 CFR part 33).

Active ANE-111 2010-09-13