. Delay the takeoff until conditions improve, as warranted.
Wind Shear Awareness
Page 4
Takeoff and initial climb
If wind shear conditions are suspected during takeoff, the flight crew should:
.
Select the most favorable runway, considering the location of the likely wind shear / downburst;
.
Select the minimum flaps configuration compatible with takeoff requirements, to maximize the climb-gradient capability;
.
Use the weather radar (or the predictive wind shear system, as available) before commencing the takeoff roll to ensure that the flight path is clear of potential hazard areas;
.
Select the maximum takeoff thrust;
.
After triggering the go levers ( setting TOGA ), select the flight path vector display on the PNF ND, as available, to obtain a direct visual cue of the climb flight path angle; and,
.
Closely monitor the airspeed and speed trend during the takeoff roll to detect any evidence of impending wind shear.
Recovery technique for wind shear encounter during takeoff
If wind shear is encountered during takeoff roll or during initial climb, apply the following recovery techniques without delay:
.
Before V1:
. reject the takeoff only if unacceptable airspeed variations occur (not exceeding the target V1) and if there is sufficient runway remaining to stop the airplane.
.
After V1:
. disconnect the autothrottle/autothrust (A/THR) and maintain or set the throttle/thrust levers to the maximum takeoff thrust;
. rotate normally at V R; and,
. follow the flight director pitch orders (wind shear survival guidance) or set the required pitch attitude, if FD is not available (as recommended in the applicable FCOM).
. During initial climb:
. disconnect the autothrottle/autothrust (A/THR) and maintain or set the throttle levers to the maximum takeoff thrust;
. if the autopilot (AP) is engaged, keep the AP engaged;
or,
follow the FD pitch orders,
or,
set the required pitch attitude (as recommended in the applicable FCOM);
. level the wings to maximize climb gradient, unless a turn is required for obstacle clearance;
. closely monitor the airspeed, speed trend and flight path angle (as available);
. allow airspeed to decrease to stick shaker activation boundary (intermittent stick shaker activation) while monitoring speed trend;
(reference to stick shaker applies only to conventional aircraft models)
. do not change the flaps and gear configuration until out of the wind shear condition;
. when out of the wind shear condition, increase the airspeed when a positive climb is confirmed, retract landing gear and flaps/slats (as applicable), and then recover a normal climb profile.
Wind Shear Awareness
Page 5
Descent Preparation – Approach and Go-around Briefing
An expanded review of the wind shear-awareness-items to be covered in the approach briefing – as practical and appropriate for the conditions of the flight – is provided hereafter.
. ATIS:
Review and discuss the following items:
. Runway in use (type of approach);
. Expected arrival route (standard arrival – STAR - or more direct radar vectors);
. Prevailing weather;
. Reports of potential low level wind shear (LLWAS warnings, TDRS data, PIREPS).
. Use of automation:
Discuss the intended use of automation for vertical and lateral navigation as a function of the suspected or forecast wind shear conditions.
Descent and Approach
Before conducting an approach in forecast or suspected wind shear conditions, the flight crew should:
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：Getting to Grips with Approach-and-Landing Accidents Reducti(110)
