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时间:2011-04-19 22:49来源:蓝天飞行翻译 作者:航空
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Avoiding landing on a contaminated runway without antiskid or with a single thrust reverser;

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For inoperative items affecting the braking or lift dumping capability, referring to the applicable:


.  FCOM and QRH, for in-flight malfunctions, or,
.  Minimum Equipment List (MEL) or Dispatch Deviation Guide (DDG), for known dispatch conditions;

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Selecting autobrake with a medium or low setting, if the contaminant is evenly distributed;

On contaminated runway, use of a medium setting usually is recommended to assure immediate braking action after touchdown (i.e., without time delay);


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Approaching on glide path and at the target final approach speed;

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Aiming for the touchdown zone;

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Performing a firm touchdown (to prevent hydroplaning and ensure rotation of main landing gear wheels);

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Using maximum reverse thrust as soon as possible after touchdown (as thrust reverser efficiency is higher at high speed);

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Confirming the extension of ground spoilers;


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Monitoring operation of autobrake (on contaminated runway, the selected deceleration rate may not be achieved, therefore the light indicating that the selected deceleration rate is achieved may not illuminate);

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Lowering the nose landing gear without undue delay to:


.  increase the weight-on-wheels and, thus, increase the braking efficiency; and,
.  activate systems associated with nose landing gear switches (e.g., anti-skid reference speed);

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As required, or when taking over from autobrake, applying brakes normally with a steady pressure;

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For directional control, using rudder pedals and differential braking, as required (i.e., not using nose-wheel-steering tiller);

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If differential braking is necessary, applying pedal braking on the required side and releasing completely the pedal action on the opposite side; and,

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After reaching taxi speed, using nose-wheel-steering with care.


8.6 – Use of Wind Information
Several sources of wind information are available to the flight crew:
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ATC (i.e., METAR, ATIS and tower winds); and,

.  
Aircraft systems (i.e., IRS and FMS winds).


Each wind information must be understood for appropriate use during various flight phases.
The following facts and figures should be recalled:
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The METAR wind is a 10-minute average wind;

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The ATIS or tower average wind is a 2-minute average wind;

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The ATIS or tower gust is the wind peak value during the last 10-minute period;


Briefing Notes Summary
Page 14

AIRBUS INDUSTRIE                                                                                       Getting to Grips with    Flight Operations Support                                            Approach-and-Landing Accidents Reduction
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The ATIS message is updated only if the wind Adherence to the following key points increases direction changes by more than 30 degrees or if safety during crosswind-landing operations:
 
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