Appendix C C-1 APPENDIX C. ACRONYMS Table C-1. Acronyms and Definitions Acronym Definition AC Advisory Circular ADI Attitude-Director Indicator AFM Airplane Flight Manual AGL Above Ground Level ARP Aerospace Recommended Practice ATC Air Traffic Control CDI Course Deviation Indicator CFR Code of Federal Regulations CG Center of Gravity CWS Control Wheel Steering DA Decision Altitude DA(H) Decision Altitude (Height) DME Distance Measuring Equipment EVS Enhanced Vision System FAA Federal Aviation Administration FCOM Flightcrew Operations Manual FD Flight Director FGS Flight Guidance System FL Flight Level FMA Flight Mode Annunciator
Appendix C C-2 Acronym Definition FMS Flight Management System GBAS Ground-Based Augmentation System GLS GBAS Landing System GPWS Ground Proximity Warning System HDD Head Down Display HUD Head-Up Display ICAO International Civil Aviation Organization ILS Instrument Landing System IMA Integrated Modular Avionics IMC Instrument Meteorological Conditions LNAV Lateral Navigation LOC Localizer MDA(H) Minimum Descent Altitude (Height) MSL Mean Sea Level MSP Mode Select Panel MUH Minimum Use Altitude/Height (autopilot) NAV Navigation ND Navigation Display NDB Non-Directional Beacon PANS-OPS Procedures for Air Navigation Services—Aircraft Operations PF Pilot Flying PFD Primary Flight Display PM Pilot Monitoring
Appendix C C-3 Acronym Definition RNAV Area Navigation RNP Required Navigation Performance RTO Rejected Takeoff RVSM Reduced Vertical Separation Minimum SAE Society of Automotive Engineers TCAS Traffic Alert and Collision Avoidance System TCS Touch Control Steering TERPS Terminal Instrument Procedures TOGA Takeoff/Go-Around VDF/MDF Demonstrated Flight Diving Speed/Demonstrated Flight Diving Mach VMO/MMO Maximum Operating Limit Speed/Maximum Operating Limit Mach VR Rotation Speed VSR Reference Stall Speed (see § 25.103) V2 Takeoff Safety Speed VMC Visual Meteorological Conditions VNAV Vertical Navigation VOR Very high frequency Omnidirectional Range WAT Weight, Altitude, and Temperature xLS ILS or GLS
Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by (1) emailing this form to 9-AWA-AVS- AIR500-Coord@faa.gov or (2) faxing it to the attention of the Aircraft Certification Service Directives Management Officer at (202) 267-3983.
Subject: AC 25.1329-1C CHG 1, Approval of Flight Guidance Systems Date: _____________________ Please check all appropriate line items:
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