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737-300 Partial or Gear Up Landing

 
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K.Haroon
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PostPosted: Sun Mar 02, 2008 12:43 pm    Post subject: 737-300 Partial or Gear Up Landing Reply with quote

Land on all available gear. The landing gear absorbs the initial shock and delays touchdown of airplane body parts. Recycling the landing gear in an attempt to extend the remaining gear is not recommended. A gear up or partial gear landing is preferable to running out of fuel while attemting to solve a gear problem.

Consideration should be given to landing at the most suitable airport with adequate runway and fire fighting capability. Foaming the runway is not necessary. Tests have shown that foaming provides minimal benefit and it takes approximately 30 minutes to replenish the fire truck's foam supply.

During a partial gear or gear up landing, speedbrakes should be extended only when stopping distance is critical. Extending the speedbrakes before all gear, or the nose or the engine nacelle in the case of a gear that does not extend, have contacted the runway may compromise controllability of the aircraft. Extending the speedbrakes after a complete touchdown also creates a risk of not being able to stow the speedbrakes after the aircraft has come to a rest. If this is the case, there would be an increase in the probability of injuring passengers if the over wing exits are used for evacuation.

During a partial gear or gear up landing, an engine making ground contact could suffer sufficient damage such that the thrust reverser mechanism may not operate. Selecting reverse thrust with any gear not extended may produce an additional asymmetric condition that makes directional control more difficult. Reverse thrust should be used only when stopping distance is critical. If reverse thrust is needed, keep in mind that the airplane is easier to control before body parts make ground contact. If the thrust reversers are deployed before all gear, or the nose or the engine nacelle in the case of a gear that does not extend, have contacted the runway, the airplane will complete touchdown sooner and at a higher speed.
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