Order 7110.65P, Air Traffic Control, with changes

2/17/05Pilot/Controller GlossaryMMAA−(See MAXIMUM AUTHORIZED ALTITUDE.)MACH NUMBER− The ratio of true airspeed to thespeed of sound; e.g., MACH .82, MACH 1.6.(See AIRSPEED.)MACH TECHNIQUE [ICAO]− Describes a controltechnique used by air traffic control whereby turbojetaircraft operating successively along suitable routesare cleared to maintain appropriate MACH numbersfor a relevant portion of the en route phase of flight.The principle objective is to achieve improvedutilization of the airspace and to ensure that separationbetween successive aircraft does not decreasebelow the established minima.MAHWP− Missed Approach Holding WaypointMAINTAIN−a. Concerning altitude/flight level, the termmeans to remain at the altitude/flight level specified.The phrase “climb and” or “descend and” normallyprecedes “maintain” and the altitude assignment;e.g., “descend and maintain 5,000.”b. Concerning other ATC instructions, the term isused in its literal sense; e.g., maintain VFR.MAINTENANCE PLANNING FRICTION LEV-EL− The friction level specified in AC 150/5320-12,Measurement, Construction, and Maintenance ofSkid Resistant Airport Pavement Surfaces, whichrepresents the friction value below which the runwaypavement surface remains acceptable for any categoryor class of aircraft operations but which isbeginning to show signs of deterioration. This valuewill vary depending on the particular friction measurementequipment used.MAKE SHORT APPROACH− Used by ATC toinform a pilot to alter his/her traffic pattern so as tomake a short final approach.(See TRAFFIC PATTERN.)MAN PORTABLE AIR DEFENSE SYSTEMS(MANPADS)− MANPADS are lightweight, shoulder−launched,missile systems used to bring downaircraft and create mass casualties. The potential forMANPADS use against airborne aircraft is real andrequires familiarity with the subject. Terroristschoose MANPADS because the weapons are lowcost, highly mobile, require minimal set−up time, andare easy to use and maintain. Although the weaponshave limited range, and their accuracy is affected bypoor visibility and adverse weather, they can be firedfrom anywhere on land or from boats where there isunrestricted visibility to the target.MANDATORY ALTITUDE− An altitude depictedon an instrument Approach Procedure Chartrequiring the aircraft to maintain altitude at thedepicted value.MANPADS−(See MAN PORTABLE AIR DEFENSESYSTEMS.)MAP−(See MISSED APPROACH POINT.)MARKER BEACON− An electronic navigationfacility transmitting a 75 MHz vertical fan or boneshapedradiation pattern. Marker beacons are identifiedby their modulation frequency and keying code,and when received by compatible airborne equipment,indicate to the pilot, both aurally and visually,that he/she is passing over the facility.(See INNER MARKER.)(See MIDDLE MARKER.)(See OUTER MARKER.)(Refer to AIM.)MARSA−(See MILITARY AUTHORITY ASSUMESRESPONSIBILITY FOR SEPARATION OFAIRCRAFT.)MAWP− Missed Approach WaypointMAXIMUM AUTHORIZED ALTITUDE− A publishedaltitude representing the maximum usablealtitude or flight level for an airspace structure orroute segment. It is the highest altitude on a Federalairway, jet route, area navigation low or high route,or other direct route for which an MEA is designatedin 14 CFR Part 95 at which adequate reception ofnavigation aid signals is assured.MAYDAY− The international radiotelephony distresssignal. When repeated three times, it indicatesPCG M−1