Atlas / eCFR / Subchapter C / Part 27
14 CFR · Part 27
AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
5 Legal Interpretations 34 Special Conditions 19 ELOS findings
Authority
49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.
Source
Docket No. 5074, 29 FR 15695, Nov. 24, 1964, unless otherwise noted.
Subpart A — General
2 sections
Subpart B — Flight
27 sections
- § 27.21 § 27.21 Proof of compliance. ↗
- § 27.25 § 27.25 Weight limits. ↗
- § 27.27 § 27.27 Center of gravity limits. ↗
- § 27.29 § 27.29 Empty weight and corresponding center of gravity. ↗
- § 27.31 § 27.31 Removable ballast. ↗
- § 27.33 § 27.33 Main rotor speed and pitch limits. ↗
- § 27.45 § 27.45 General. ↗
- § 27.49 § 27.49 Performance at minimum operating speed. ↗
- § 27.51 § 27.51 Takeoff. ↗
- § 27.65 § 27.65 Climb: all engines operating. ↗
- § 27.67 § 27.67 Climb: one engine inoperative. ↗
- § 27.71 § 27.71 Autorotation performance. ↗
- § 27.75 § 27.75 Landing. ↗
- § 27.87 § 27.87 Height-velocity envelope. ↗
- § 27.141 § 27.141 General. ↗
- § 27.143 § 27.143 Controllability and maneuverability. ↗
- § 27.151 § 27.151 Flight controls. ↗
- § 27.161 § 27.161 Trim control. ↗
- § 27.171 § 27.171 Stability: general. ↗
- § 27.173 § 27.173 Static longitudinal stability. ↗
- § 27.175 § 27.175 Demonstration of static longitudinal stability. ↗
- § 27.177 § 27.177 Static directional stability. ↗
- § 27.231 § 27.231 General. ↗
- § 27.235 § 27.235 Taxiing condition. ↗
- § 27.239 § 27.239 Spray characteristics. ↗
- § 27.241 § 27.241 Ground resonance. ↗
- § 27.251 § 27.251 Vibration. ↗
Subpart C — Strength Requirements
37 sections
- § 27.301 § 27.301 Loads. ↗
- § 27.303 § 27.303 Factor of safety. ↗
- § 27.305 § 27.305 Strength and deformation. ↗
- § 27.307 § 27.307 Proof of structure. ↗
- § 27.309 § 27.309 Design limitations. ↗
- § 27.321 § 27.321 General. ↗
- § 27.337 § 27.337 Limit maneuvering load factor. ↗
- § 27.339 § 27.339 Resultant limit maneuvering loads. ↗
- § 27.341 § 27.341 Gust loads. ↗
- § 27.351 § 27.351 Yawing conditions. ↗
- § 27.361 § 27.361 Engine torque. ↗
- § 27.391 § 27.391 General. ↗
- § 27.395 § 27.395 Control system. ↗
- § 27.397 § 27.397 Limit pilot forces and torques. ↗
- § 27.399 § 27.399 Dual control system. ↗
- § 27.411 § 27.411 Ground clearance: tail rotor guard. ↗
- § 27.427 § 27.427 Unsymmetrical loads. ↗
- § 27.471 § 27.471 General. ↗
- § 27.473 § 27.473 Ground loading conditions and assumptions. ↗
- § 27.475 § 27.475 Tires and shock absorbers. ↗
- § 27.477 § 27.477 Landing gear arrangement. ↗
- § 27.479 § 27.479 Level landing conditions. ↗
- § 27.481 § 27.481 Tail-down landing conditions. ↗
- § 27.483 § 27.483 One-wheel landing conditions. ↗
- § 27.485 § 27.485 Lateral drift landing conditions. ↗
- § 27.493 § 27.493 Braked roll conditions. ↗
- § 27.497 § 27.497 Ground loading conditions: landing gear with tail wheels. ↗
- § 27.501 § 27.501 Ground loading conditions: landing gear with skids. ↗
- § 27.505 § 27.505 Ski landing conditions. ↗
- § 27.521 § 27.521 Float landing conditions. ↗
- § 27.547 § 27.547 Main rotor structure. ↗
- § 27.549 § 27.549 Fuselage, landing gear, and rotor pylon structures. ↗
- § 27.561 § 27.561 General. ↗
- § 27.562 § 27.562 Emergency landing dynamic conditions. ↗
- § 27.563 § 27.563 Structural ditching provisions. ↗
- § 27.571 § 27.571 Fatigue evaluation of flight structure. ↗
- § 27.573 § 27.573 Damage Tolerance and Fatigue Evaluation of Composite Rotorcraft Structures. ↗
Subpart D — Design and Construction
62 sections
- § 27.601 § 27.601 Design. ↗
- § 27.602 § 27.602 Critical parts. ↗
- § 27.603 § 27.603 Materials. ↗
- § 27.605 § 27.605 Fabrication methods. ↗
- § 27.607 § 27.607 Fasteners. ↗
- § 27.609 § 27.609 Protection of structure. ↗
- § 27.610 § 27.610 Lightning and static electricity protection. ↗
- § 27.611 § 27.611 Inspection provisions. ↗
- § 27.613 § 27.613 Material strength properties and design values. ↗
- § 27.619 § 27.619 Special factors. ↗
- § 27.621 § 27.621 Casting factors. ↗
- § 27.623 § 27.623 Bearing factors. ↗
- § 27.625 § 27.625 Fitting factors. ↗
- § 27.629 § 27.629 Flutter. ↗
- § 27.653 § 27.653 Pressure venting and drainage of rotor blades. ↗
- § 27.659 § 27.659 Mass balance. ↗
- § 27.661 § 27.661 Rotor blade clearance. ↗
- § 27.663 § 27.663 Ground resonance prevention means. ↗
- § 27.671 § 27.671 General. ↗
- § 27.672 § 27.672 Stability augmentation, automatic, and power-operated systems. ↗
- § 27.673 § 27.673 Primary flight control. ↗
- § 27.674 § 27.674 Interconnected controls. ↗
- § 27.675 § 27.675 Stops. ↗
- § 27.679 § 27.679 Control system locks. ↗
- § 27.681 § 27.681 Limit load static tests. ↗
- § 27.683 § 27.683 Operation tests. ↗
- § 27.685 § 27.685 Control system details. ↗
- § 27.687 § 27.687 Spring devices. ↗
- § 27.691 § 27.691 Autorotation control mechanism. ↗
- § 27.695 § 27.695 Power boost and power-operated control system. ↗
- § 27.723 § 27.723 Shock absorption tests. ↗
- § 27.725 § 27.725 Limit drop test. ↗
- § 27.727 § 27.727 Reserve energy absorption drop test. ↗
- § 27.729 § 27.729 Retracting mechanism. ↗
- § 27.731 § 27.731 Wheels. ↗
- § 27.733 § 27.733 Tires. ↗
- § 27.735 § 27.735 Brakes. ↗
- § 27.737 § 27.737 Skis. ↗
- § 27.751 § 27.751 Main float buoyancy. ↗
- § 27.753 § 27.753 Main float design. ↗
- § 27.755 § 27.755 Hulls. ↗
- § 27.771 § 27.771 Pilot compartment. ↗
- § 27.773 § 27.773 Pilot compartment view. ↗
- § 27.775 § 27.775 Windshields and windows. ↗
- § 27.777 § 27.777 Cockpit controls. ↗
- § 27.779 § 27.779 Motion and effect of cockpit controls. ↗
- § 27.783 § 27.783 Doors. ↗
- § 27.785 § 27.785 Seats, berths, litters, safety belts, and harnesses. ↗
- § 27.787 § 27.787 Cargo and baggage compartments. ↗
- § 27.801 § 27.801 Ditching. ↗
- § 27.805 § 27.805 Flight crew emergency exits. ↗
- § 27.807 § 27.807 Emergency exits. ↗
- § 27.831 § 27.831 Ventilation. ↗
- § 27.833 § 27.833 Heaters. ↗
- § 27.853 § 27.853 Compartment interiors. ↗
- § 27.855 § 27.855 Cargo and baggage compartments. ↗
- § 27.859 § 27.859 Heating systems. ↗
- § 27.861 § 27.861 Fire protection of structure, controls, and other parts. ↗
- § 27.863 § 27.863 Flammable fluid fire protection. ↗
- § 27.865 § 27.865 External loads. ↗
- § 27.871 § 27.871 Leveling marks. ↗
- § 27.873 § 27.873 Ballast provisions. ↗
Subpart E — Powerplant
58 sections
- § 27.901 § 27.901 Installation. ↗
- § 27.903 § 27.903 Engines. ↗
- § 27.907 § 27.907 Engine vibration. ↗
- § 27.917 § 27.917 Design. ↗
- § 27.921 § 27.921 Rotor brake. ↗
- § 27.923 § 27.923 Rotor drive system and control mechanism tests. ↗
- § 27.927 § 27.927 Additional tests. ↗
- § 27.931 § 27.931 Shafting critical speed. ↗
- § 27.935 § 27.935 Shafting joints. ↗
- § 27.939 § 27.939 Turbine engine operating characteristics. ↗
- § 27.951 § 27.951 General. ↗
- § 27.952 § 27.952 Fuel system crash resistance. ↗
- § 27.953 § 27.953 Fuel system independence. ↗
- § 27.954 § 27.954 Fuel system lightning protection. ↗
- § 27.955 § 27.955 Fuel flow. ↗
- § 27.959 § 27.959 Unusable fuel supply. ↗
- § 27.961 § 27.961 Fuel system hot weather operation. ↗
- § 27.963 § 27.963 Fuel tanks: general. ↗
- § 27.965 § 27.965 Fuel tank tests. ↗
- § 27.967 § 27.967 Fuel tank installation. ↗
- § 27.969 § 27.969 Fuel tank expansion space. ↗
- § 27.971 § 27.971 Fuel tank sump. ↗
- § 27.973 § 27.973 Fuel tank filler connection. ↗
- § 27.975 § 27.975 Fuel tank vents. ↗
- § 27.977 § 27.977 Fuel tank outlet. ↗
- § 27.991 § 27.991 Fuel pumps. ↗
- § 27.993 § 27.993 Fuel system lines and fittings. ↗
- § 27.995 § 27.995 Fuel valves. ↗
- § 27.997 § 27.997 Fuel strainer or filter. ↗
- § 27.999 § 27.999 Fuel system drains. ↗
- § 27.1011 § 27.1011 Engines: General. ↗
- § 27.1013 § 27.1013 Oil tanks. ↗
- § 27.1015 § 27.1015 Oil tank tests. ↗
- § 27.1017 § 27.1017 Oil lines and fittings. ↗
- § 27.1019 § 27.1019 Oil strainer or filter. ↗
- § 27.1021 § 27.1021 Oil system drains. ↗
- § 27.1027 § 27.1027 Transmissions and gearboxes: General. ↗
- § 27.1041 § 27.1041 General. ↗
- § 27.1043 § 27.1043 Cooling tests. ↗
- § 27.1045 § 27.1045 Cooling test procedures. ↗
- § 27.1091 § 27.1091 Air induction. ↗
- § 27.1093 § 27.1093 Induction system icing protection. ↗
- § 27.1121 § 27.1121 General. ↗
- § 27.1123 § 27.1123 Exhaust piping. ↗
- § 27.1141 § 27.1141 Powerplant controls: general. ↗
- § 27.1143 § 27.1143 Engine controls. ↗
- § 27.1145 § 27.1145 Ignition switches. ↗
- § 27.1147 § 27.1147 Mixture controls. ↗
- § 27.1151 § 27.1151 Rotor brake controls. ↗
- § 27.1163 § 27.1163 Powerplant accessories. ↗
- § 27.1183 § 27.1183 Lines, fittings, and components. ↗
- § 27.1185 § 27.1185 Flammable fluids. ↗
- § 27.1187 § 27.1187 Ventilation and drainage. ↗
- § 27.1189 § 27.1189 Shutoff means. ↗
- § 27.1191 § 27.1191 Firewalls. ↗
- § 27.1193 § 27.1193 Cowling and engine compartment covering. ↗
- § 27.1194 § 27.1194 Other surfaces. ↗
- § 27.1195 § 27.1195 Fire detector systems. ↗
Subpart F — Equipment
39 sections
- § 27.1301 § 27.1301 Function and installation. ↗
- § 27.1303 § 27.1303 Flight and navigation instruments. ↗
- § 27.1305 § 27.1305 Powerplant instruments. ↗
- § 27.1307 § 27.1307 Miscellaneous equipment. ↗
- § 27.1309 § 27.1309 Equipment, systems, and installations. ↗
- § 27.1316 § 27.1316 Electrical and electronic system lightning protection. ↗
- § 27.1317 § 27.1317 High-intensity Radiated Fields (HIRF) Protection. ↗
- § 27.1321 § 27.1321 Arrangement and visibility. ↗
- § 27.1322 § 27.1322 Warning, caution, and advisory lights. ↗
- § 27.1323 § 27.1323 Airspeed indicating system. ↗
- § 27.1325 § 27.1325 Static pressure systems. ↗
- § 27.1327 § 27.1327 Magnetic direction indicator. ↗
- § 27.1329 § 27.1329 Automatic pilot and flight guidance system. ↗
- § 27.1337 § 27.1337 Powerplant instruments. ↗
- § 27.1351 § 27.1351 General. ↗
- § 27.1353 § 27.1353 Energy storage systems. ↗
- § 27.1357 § 27.1357 Circuit protective devices. ↗
- § 27.1361 § 27.1361 Master switch. ↗
- § 27.1365 § 27.1365 Electric cables. ↗
- § 27.1367 § 27.1367 Switches. ↗
- § 27.1381 § 27.1381 Instrument lights. ↗
- § 27.1383 § 27.1383 Landing lights. ↗
- § 27.1385 § 27.1385 Position light system installation. ↗
- § 27.1387 § 27.1387 Position light system dihedral angles. ↗
- § 27.1389 § 27.1389 Position light distribution and intensities. ↗
- § 27.1391 § 27.1391 Minimum intensities in the horizontal plane of forward and rear position lights. ↗
- § 27.1393 § 27.1393 Minimum intensities in any vertical plane of forward and rear position lights. ↗
- § 27.1395 § 27.1395 Maximum intensities in overlapping beams of forward and rear position lights. ↗
- § 27.1397 § 27.1397 Color specifications. ↗
- § 27.1399 § 27.1399 Riding light. ↗
- § 27.1401 § 27.1401 Anticollision light system. ↗
- § 27.1411 § 27.1411 General. ↗
- § 27.1413 § 27.1413 Safety belts. ↗
- § 27.1415 § 27.1415 Ditching equipment. ↗
- § 27.1419 § 27.1419 Ice protection. ↗
- § 27.1435 § 27.1435 Hydraulic systems. ↗
- § 27.1457 § 27.1457 Cockpit voice recorders. ↗
- § 27.1459 § 27.1459 Flight data recorders. ↗
- § 27.1461 § 27.1461 Equipment containing high energy rotors. ↗
Subpart G — Operating Limitations and Information
27 sections
- § 27.1501 § 27.1501 General. ↗
- § 27.1503 § 27.1503 Airspeed limitations: general. ↗
- § 27.1505 § 27.1505 Never-exceed speed. ↗
- § 27.1509 § 27.1509 Rotor speed. ↗
- § 27.1519 § 27.1519 Weight and center of gravity. ↗
- § 27.1521 § 27.1521 Powerplant limitations. ↗
- § 27.1523 § 27.1523 Minimum flight crew. ↗
- § 27.1525 § 27.1525 Kinds of operations. ↗
- § 27.1527 § 27.1527 Maximum operating altitude. ↗
- § 27.1529 § 27.1529 Instructions for Continued Airworthiness. ↗
- § 27.1541 § 27.1541 General. ↗
- § 27.1543 § 27.1543 Instrument markings: general. ↗
- § 27.1545 § 27.1545 Airspeed indicator. ↗
- § 27.1547 § 27.1547 Magnetic direction indicator. ↗
- § 27.1549 § 27.1549 Powerplant instruments. ↗
- § 27.1551 § 27.1551 Oil quantity indicator. ↗
- § 27.1553 § 27.1553 Fuel quantity indicator. ↗
- § 27.1555 § 27.1555 Control markings. ↗
- § 27.1557 § 27.1557 Miscellaneous markings and placards. ↗
- § 27.1559 § 27.1559 Limitations placard. ↗
- § 27.1561 § 27.1561 Safety equipment. ↗
- § 27.1565 § 27.1565 Tail rotor. ↗
- § 27.1581 § 27.1581 General. ↗
- § 27.1583 § 27.1583 Operating limitations. ↗
- § 27.1585 § 27.1585 Operating procedures. ↗
- § 27.1587 § 27.1587 Performance information. ↗
- § 27.1589 § 27.1589 Loading information. ↗
Appendices & SFARs
Related Advisory Circulars
ACs whose subject series maps to Part 27. 102 current, 108 cancelled.
- AC 20-135APowerplant Installation and Propulsion System Component Fire Protection Test Methods, Standards, and CriteriaCurrent2025-09-29↗
- AC 20-167BAirworthiness Approval of Enhanced Vision System, Enhanced Flight Vision System, and Combined Vision System EquipmentCurrent2025-09-08↗
- AC 20-197Turbine Engine and Airframe Sensor Icing ComplianceCurrent2025-06-18↗
- AC 20-146AMethodology for Dynamic Seat Certification by Analysis for Use in Parts 23, 25, 27, and 29 Airplanes and RotorcraftCurrent2024-11-29↗
- AC 20-154AGuide for Developing a Receiving Inspection System for Aircraft Parts and MaterialsCurrent2024-07-03↗
- AC 20-158BThe Certification of Aircraft Electrical and Electronic Systems for Operation in the High-Intensity Radiated Fields (HIRF) EnvironmentCurrent2024-05-20↗
- AC 20-186AAirworthiness and Operational Approval of Cockpit Voice Recorder SystemsCurrent2024-05-06↗
- AC 20-29CApproval and Use of Fuel System Icing Inhibitors (FSII)Current2024-03-27↗
- AC 20-193Use of Multi-Core ProcessorsCurrent2024-01-08↗
- AC 20-105CReciprocating Engine Power-Loss Accident Prevention and Trend MonitoringCurrent2023-12-18↗
- AC 20-109BService Difficulty Reporting System (Air Operator/Air Agency/General Aviation/Unmanned Aircraft Systems)Current2023-11-01↗
- AC 20-152ADevelopment Assurance for Airborne Electronic HardwareCurrent2022-10-07↗
- AC 20-189Management of Open Problem Reports (OPRs)Current2022-09-16↗
- AC 20-185AAirworthiness Approval of Synthetic Vision Systems, Synthetic Vision Guidance Systems and Aircraft State Awareness Synthetic Vision SystemsCurrent2021-01-27↗
- AC 20-144AFAA Approval of Electrical Firing Cartridge Components in an Aircraft Fire Extinguishing or Suppression SystemCurrent2018-10-11↗
- AC 20-162BAirworthiness Approval of Installed Radio Frequency Identification (RFID) Tags and SensorsCurrent2018-10-11↗
- AC 20-53CProtection of Aircraft Fuel Systems Against Vapor Ignition Caused by LightningCurrent2018-09-24↗
- AC 20-62EEligibility, Quality, & Identification of Aeronautical Replacement PartsCurrent2018-09-14↗
- AC 20-190Aircraft Electromagnetic Compatibility CertificationCurrent2018-06-25↗
- AC 20-115DAirborne Software Development Assurance Using EUROCAE ED-12( ) and RTCA DO-178( )Current2017-07-21↗
- AC 20-151CAirworthiness Approval of Traffic Alert and Collision Avoidance Systems (TCAS II), Versions 7.0 & 7.1 and Associated Mode S TranspondersCurrent2017-07-21↗
- AC 20-164ADesigning and Demonstrating Aircraft Tolerance to Portable Electronic DevicesCurrent2017-06-09↗
- AC 20-188Compatibility of Changes to Type Design Installed on AircraftCurrent2016-12-09↗
- AC 20-182AAirworthiness Approval for Aircraft Weather Radar SystemsCurrent2016-10-01↗
- AC 20-140CGuidelines for Design Approval of Aircraft Data Link Communication Systems Supporting Air Traffic Services (ATS)Current2016-09-28↗
- AC 20-160AOnboard Recording of Controller Pilot Data Link Communication (CPDLC) In Crash Survivable MemoryCurrent2016-09-28↗
- AC 20-153BAcceptance of Aeronautical Data Processes and Associated DatabasesCurrent2016-04-19↗
- AC 20-77BUse of Manufacturers’ Maintenance ManualsCurrent2016-01-04↗
- AC 20-149BInstallation Guidance for Domestic Flight Information Service- BroadcastCurrent2015-12-21↗
- AC 20-165BAirworthiness Approval of Automatic Dependent Surveillance - Broadcast OUT SystemsCurrent2015-12-07↗
- AC 20-184Guidance on Testing and Installation of Rechargeable Lithium Battery and Battery Systems on AircraftCurrent2015-10-15↗
- AC 20-18BQualification Testing of Turbojet and Turbofan Engine Thrust ReversersCurrent2015-07-07↗
- AC 20-172BAirworthiness Approval for ADS-B In Systems and ApplicationsCurrent2015-05-20↗
- AC 20-150BAirworthiness Approval of Satellite Voice (SATVOICE) Equipment Supporting Air Traffic Service (ATS) CommunicationCurrent2014-12-23↗
- AC 20-183Laser Airworthiness Installation GuidanceCurrent2014-12-15↗
- AC 20-166AIssue Paper ProcessCurrent2014-11-06↗
- AC 20-147ATurbojet, Turboprop, Turboshaft, and Turbofan Engine Induction System Icing and Ice IngestionCurrent2014-10-22↗
- AC 20-24DApproval of Propulsion Fuels, Additives, and Lubricating OilsCurrent2014-06-30↗
- AC 20-176AService Bulletins Related to Airworthiness Directives and Indicating FAA Approval on Service DocumentsCurrent2014-06-16↗
- AC 20-181Airworthiness Approval of Attitude Heading Reference System (AHRS) EquipmentCurrent2014-04-07↗
- AC 20-138DAirworthiness Approval of Positioning and Navigation Systems (Including Change 2)Current2014-03-28↗
- AC 20-155AIndustry Documents To Support Aircraft Lightning Protection CertificationCurrent2013-07-16↗
- AC 20-179Certification Data Retention Agreements and Government RecordsCurrent2013-06-10↗
- AC 20-180Approved Model List Supplemental Type Certificate (AML-STC)Current2013-05-14↗
- AC 20-178Flammability Testing of Aircraft Cabin Interior Panels After AlterationsCurrent2012-06-04↗
- AC 20-177Design and Installation Guidance for an Airborne System for Non-Required Telecommunication Service in Non Aeronautical Frequency BandsCurrent2012-02-28↗
- AC 20-175Controls for Flight Deck SystemsCurrent2011-12-08↗
- AC 20-174Development of Civil Aircraft and SystemsCurrent2011-09-30↗
- AC 20-173Installation of Electronic Flight Bag ComponentsCurrent2011-09-27↗
- AC 20-136BAircraft Electrical and Electronic System Lightning ProtectionCurrent2011-09-07↗
+ 160 more on the FAA index
Recent Federal Register activity
The last 25 of 108 Federal Register documents that touch 14 CFR Part 27, newest first.
- 2026-04-21NPRMSpecial Conditions: Skyryse, Robinson Helicopter Company Model R66 Helicopter; Flight Control System Annunciation of ControlRead →
- 2025-11-21NPRMSpecial Conditions: Skyryse, Robinson Model R66 Helicopter; Static Longitudinal StabilityRead →
- 2024-12-13RuleSpecial Conditions: Skyryse, Robinson Helicopter Company Model R66 Helicopter; Interaction of Systems and StructuresRead →
- 2024-08-28NPRMSpecial Conditions: Skyryse, Robinson Helicopter Company Model R66 Helicopter; Interaction of Systems and StructuresRead →
- 2023-10-02NPRMInterior Parts and Components Fire Protection for Transport Category Airplanes; Extension of Comment PeriodRead →
- 2023-08-17NPRMInterior Parts and Components Fire Protection for Transport Category AirplanesRead →
- 2023-02-10RuleNormal and Transport Category Rotorcraft CertificationRead →
- 2022-05-03RuleSpecial Conditions: Robinson Helicopter Company Model R66 Helicopter; Pressure Refueling ProvisionsRead →
- 2022-02-04NPRMSpecial Conditions: Robinson Helicopter Company Model R66 Helicopter; Pressure Refueling ProvisionsRead →
- 2022-01-10RuleSpecial Conditions: Vector Aerospace Helicopter Services USA, Airbus Helicopters Model AS350B2 and AS350B3 Helicopters; Stability Augmentation System and Automatic Flight Control SystemRead →
- 2021-03-17RuleSpecial Conditions: AgustaWestland Philadelphia Corporation, Leonardo S.p.A. Model A119 and AW119 MKII Helicopters; Pressure Refueling and Fueling ProvisionsRead →
- 2020-12-22RuleSpecial Conditions: Garmin International, Inc., Bell Textron Canada Limited Model 505 Helicopter, Visual Flight Rules Autopilot and Stability Augmentation SystemRead →
- 2020-12-11RuleSpecial Conditions: Garmin International, Inc., Bell Textron Canada Limited Model 505 Helicopter, Visual Flight Rules Autopilot and Stability Augmentation SystemRead →
- 2020-11-02NPRMSpecial Conditions: AgustaWestland Philadelphia Corporation, Leonardo S.p.A. Model A119 and AW119 MKII Helicopters; Pressure Refueling and Fueling ProvisionsRead →
- 2020-02-19RuleSpecial Conditions: Bell Helicopter Textron Canada Limited, Model Bell 505, Visual Flight Rules Autopilot and Stability Augmentation System (AP/SAS System)Read →
- 2019-11-21RuleSpecial Conditions: Robinson Helicopter Company, Model Robinson R66, Visual Flight Rules Autopilot and Stability Augmentation System (AP/SAS System)Read →
- 2019-11-21NPRMSpecial Conditions: Bell Helicopter Textron Canada Limited, Model Bell 505, Visual Flight Rules Autopilot and Stability Augmentation System (AP/SAS System)Read →
- 2019-10-02NPRMInterior Parts and Components Fire Protection for Transport Category AirplanesRead →
- 2019-07-03NPRMInterior Parts and Components Fire Protection for Transport Category AirplanesRead →
- 2019-06-26NPRMSpecial Conditions: Robinson Helicopter Company, Model Robinson R66, Visual Flight Rules Autopilot and Stability Augmentation System (AP/SAS System)Read →
- 2018-07-06RuleAviation Safety Organization Changes; CorrectionRead →
- 2018-04-13RuleSpecial Conditions: Airbus Helicopters Model AS350B2 and AS350B3 Helicopters; Installation of Garmin International, Inc., Autopilot SystemRead →
- 2018-03-06RuleRotorcraft Pilot Compartment ViewRead →
- 2018-03-05RuleAviation Safety Organization ChangesRead →
- 2017-12-07NPRMSpecial Conditions: Airbus Helicopters Model AS350B2 and AS350B3 Helicopters; Installation of Garmin International, Inc., Autopilot SystemRead →
+ 83 more on federalregister.gov