WIND SHEAR by n7YOgrT

VIEWS: 0 PAGES: 3

									 09 April 2004                            CAUTION
                                                                           MONITOR RADAR
                                          Takeoffs,                           DISPLAY
                                       approaches, or
                                   landings should not      WIND SHEAR AHEAD
                                   be attempted into a      WIND SHEAR AHEAD
                                      known wind shear
                                        condition. or
                                    thunderstorm cells
                                     are within 5NM of
                                   the intended track.

            Takeoff
                                                                                            3.0 nm
        If heavy rain or thunderstorm activity is known
        to exist near the airport, conceder the following:
            Use MAX thrust if possible.                                       W
            Use the longest suitable runway.
                                                                               A
            Use flaps 15 unless limited by obstacle clearance
              And/or climb gradient.
                                                                               R
            Use the FD for takeoff and initial climb.
                                                                               N
            Develop an awareness of the normal values of                      I     25
              airspeed, attitude, and vertical speed.                          N
                                                                               G

             Predictive wind shear(PWS) is activated by the following:            0.5 nm


        Manually when WXR switch selected,
         on the EFIS control panel.
        Or automatically when throttles are
         set for takeoff.
        Automatically in the air when below
         2300 feet AGL.

                                                                    Pushing TO/GA switch
Pushing TO/GA switch           WIND SHEAR AHEAD                     after lift off removes T.O
above 80 kts, disarms          WIND SHEAR AHEAD                     derates.
LNAV and VNAV.
                                                                 If wind shear is encountered
                                                                 near VR speed and airspeed
                                    V1         VR                suddenly decreases.
                                                                 There may not be sufficient
                                                                 runway left to accelerate to
                                                                 normal take off speed,
                                                                 initiate a normal rotation at
               MAX THRUST                                        least 2000 feet before the
In EEC normal mode:                                              end of the runway.
MAX rated thrust is available in any                             Once air borne, perform the
phase of the flight by moving the                                wind shear escape maneuver.
throttles to the full forward position.
In EEC alternate mode:                               For PWS WARNING prior V1, reject takeoff.
Thrust protection is not available.                                     NOTE
Over boost or fire walling the                           There may not be sufficient runway
throttles should only be considered as                remaining to stop if an RTO is initiated
the last action and terrain contact is                                 at VI.
imminent.
                                                                   “BULLETIN”
           Alerts priorities:                       Select the WXR on the EFIS panel prior
              1. GPWS wind shears WARNING.          takeoff.
              2. Terrain warning.                   This prevents nuisance messages EICAS
              3. PWS.                               advisory wind shear sys message to be
              4. TCAS.                              displayed. (Following a power interrupt)
            Approach and landings
            A stabilized approach should be established no lower than 1000 feet AGL.
            Use flaps 30.
            Use autopilot and auto throttles.
            A longer runway provides the greatest margin for increased ground roll.
            Avoid large thrust reductions, or trim changes.
            Monitor vertical flight path instruments for uncontrolled changes
             Below 1000 feet AGL, in excess of any of the following:
                   15 knots IAS.
                   500 FPM VS.
                   5 degrees pitch attitude.                                 GO AROUND
                                                                          WINDSHEAR AHEAD
                   One dot displacement from the glide slope.
                   unusual throttle position for a significant
                   period of time.
                                                 MONITOR RADAR                             3.0 nm
                                                    DISPLAY

         For PWS CAUTION alert
  Maneuver as required to avoid the
  wind shear.
                                                                                          1.5 nm
                                        For PWS WARNING alert                  W
                               Perform the wind shear escape maneuver,         A
                                                                                     25
                               Or at captain discretion, perform a             R
                               normal go-around.                               N
                                                                               I
                                                                               N     0.5 nm
                            GO AROUND                                          G
                         WINDSHEAR AHEAD

                                           Pushing TO/GA switch a
                                           second push after GO around.
                                           A/T will go to full thrust.




                Pilot flying                                Pilot not flying
       MANUAL FLIGHT         AUTOMATIC FLIGHT          MANUAL FLIGHT       AUTOMATIC FLIGHT
>Disconnect AP.           >Push TO/GA.              >Assure MAX thrust    >Assure MAX thrust
>Push TO/GA.                                        is set.               is set.
>Aggressively apply       >verify TO/GA mode        (MAX rated thrust)
MAX thrust.               annunciation.                                   >Verify all actions
>Disconnect auto                                    >Verify all actions   have been completed
throttles.                >verify thrust            have been completed   >Monitor VS and
>Roll wings level and     advances to GA power      and call out any      altitude.
rotate toward 15                                    omissions.
pitch attitude.           >Retract speedbrakes                            >Call out any trend
>Retract speed                                                            toward terrain
brakes                    >monitor system                                 contact, or
>Follow flight            performance.                                    significant
director TO/GA                                                            airspeed changes.
guidance
(if available).


        Do not change gear or flap configuration until wind shear is no longer factor.
        Monitor VS and altitude.
        Do not attempt to regain lost airspeed until wind shear is no longer a factor.

								
To top