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  • Chapter 11: Aircraft Performance › Performance › Climb Performance

    Positive climb performance occurs when an aircraft gains PE by increasing altitude. Two basic factors, or a combination of the two factors, contribute to positive climb performance in most aircraft: 1. The aircraft climbs (gains PE) using excess power above ... that required to maintain level flight, or 2. The aircraft climbs by converting airspeed (KE) to altitude (PE). As an example of factor 1 above, an aircraft with an engine capable of producing 200 horsepower (at a given altitude…

  • Chapter 5. Air Traffic Procedures › Section 3. En Route Procedures › 5-3-1. ARTCC Communications

    Uplink Message Elements (LVLU) CPDLC Message Sets Operational Definition in PANS-ATM (Doc 4444) W/U LVLU-5 Instruction to maintain the specified level or vertical range. W/U LVLU-6 Instruction that a climb to the specified level or vertical range ... commence and once reached is to be maintained. UM20 CLIMB TO AND MAINTAIN (altitude) Note - Used for a single level UM23 DESCEND TO AND MAINTAIN (altitude) Note - Used for a single level Instruction that a descent to the specified level…

  • Chapter 8: Flight Instruments › Altimeter Operation

    altimeter indicates an altitude above the actual field elevation. If the barometric pressure setting is reset to the current altimeter setting of 29.68 "Hg, then the field elevation is again indicated on the altimeter. This pressure change ... easily noticed in flight since aircraft fly at specific altitudes. The aircraft steadily decreases true altitude while the altimeter is held constant through pilot action as discussed in the previous section. Knowing the aircraft’s altitude is vitally important…

  • Chapter 6. Emergency Procedures › Section 4. Two-way Radio Communications Failure › 6-4-1. Two-way Radio Communications Failure

    advised may be expected in a further clearance by the route filed in the flight plan. (b) Altitude. At the HIGHEST of the following altitudes or flight levels FOR THE ROUTE SEGMENT BEING FLOWN: (1) The altitude or flight level ... assigned in the last ATC clearance received; (2) The minimum altitude (converted, if appropriate, to minimum flight level as prescribed in 14 CFR section 91.121(c)) for IFR operations; or (3) The altitude or flight level ATC has advised…

  • Chapter 4. Air Traffic Control › Section 4. ATC Clearances and Aircraft Separation › 4-4-3. Clearance Items

    Route of Flight. 1. Clearances are normally issued for the altitude or flight level and route filed by the pilot. However, due to traffic conditions, it is frequently necessary for ATC to specify an altitude or flight level or route ... their radio equipment cannot receive the type of signals they must utilize to comply with their clearance. d. Altitude Data. 1. The altitude or flight level instructions in an ATC clearance normally require that a pilot “MAINTAIN” the altitude…

  • Chapter 9: Basic Flight Maneuvers › Normal Takeoff from a Hover › Technique

    increase in power requires an increase in the proper antitorque pedal to maintain heading. Maintain a straight takeoff path throughout the takeoff. While accelerating through effective translational lift (position 3), the helicopter begins to climb, and the nose tends ... position 4, hold an attitude that allows a smooth acceleration toward climbing airspeed and a commensurate gain in altitude so that the takeoff profile does not take the helicopter through any of the cross-hatched or shaded areas…