Ditching  

Posted by y. 源

Saw the US Airways A320 news? No? Go here: http://hosted.ap.org/dynamic/stories/P/PLANE_IN_RIVER?SITE=MYPSP&SECTION=HOME&TEMPLATE=DEFAULT&CTIME=2009-01-15-21-40-59



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The news above suddenly make me realize that I don't really know about ditching into water.

Many questions popped inside my head minutes ago.
What to do when my engine quits on me during nav sorties over the sea?

How am I going to ditch the damned aircraft in glassy water?


If the sea is rough, how the hell am I going to ditch it?!!


Am I going to remember all the emergency procedures that time?


Have I equipped myself with a serviceable life vests and other necessary survival equipments?


How am I going to survive after ditching?


I just remember I can't swim...................



But anyway, I have tried looking for information online regarding ditching stuffs. Below is what I extracted from equipped.org. Read this, SE pilots. We gonna need it someday.:

Recommended Ditching Procedures for S/E Airplanes

The following procedures are intended for a typical high-wing, fixed-gear, single-engine airplane. Normal approach speeds of 70-80 KIAS (flaps up) and 60-70 KIAS (flaps down) are assumed.

Power-off Ditching:

  1. RADIO--TRANSMIT MAYDAY on 121.5 MHz or any other frequency, if able, giving location and intentions.
  2. WING FLAPS--AS DESIRED (Flaps up recommended).
  3. APPROACH--INTO THE WIND. Except in light winds and heavy swells, in which case LAND PARALLEL TO SWELLS.
  4. HARNESS--SECURE. Brief passengers without shoulder harness to remove eyeglasses and cushion face with folded coat or blanket just prior to touchdown. Don life vests if practical. Do not inflate prior to egress.
  5. CABIN DOORS--UNLATCH AND LOCK OPEN.
  6. AIRSPEED--80 KIAS (Flaps up). 70 KIAS (Flaps down).
  7. TOUCHDOWN--TWO STEP FLARE WITH TOUCHDOWN AT MINIMUM AIRSPEED. Keep wings parallel to water if landing along swells. If able, kick drift off with rudder prior to touchdown.
  8. AIRPLANE--EVACUATE through any available exit. If necessary, open window and flood cabin to equalize pressure so doors can be opened.
  9. LIFE VESTS AND RAFT--INFLATE AFTER EGRESS.

NOTE

Expect one or more preliminary light skips before the principal impact with the water. The principal water im pact may be severe. Do not unfasten the harness too early. Do not inflate the flotation gear prior to exiting the airplane. Under some light wind conditions, glassy water may make judging the height above water surface very difficult. The above procedure is generally the best way to make a water landing without power. In glassy water situations, make every effort to use other cues, such as floating objects or shorelines, to judge height above water.




Power-on Ditching:

  1. RADIO--TRANSMIT MAYDAY on 121.5 MHz or any other frequency, if able, giving location and intentions.
  2. HEAVY OBJECTS--SECURE OR JETTISON, if practical.
  3. WING FLAPS--AS DESIRED (Flaps down recommended).
  4. APPROACH--INTO THE WIND. Except in light winds and heavy swells, then LAND PARALLEL TO SWELLS.
  5. HARNESS--SECURE. Brief passengers without shoulder harness to remove eyeglasses and cushion face with folded coat or blanket just prior to touchdown. Don life vests. Do not inflate prior to egress.
  6. CABIN DOORS--UNLATCH AND LOCK OPEN.
  7. AIRSPEED--60 KIAS (Flaps down).
  8. TOUCHDOWN--USE POWER TO ESTABLISH 100 - 200 FT/MIN DESCENT AT 60 KIAS. Keep wings parallel to water if landing along swells. If able, kick drift off with rudder prior to touchdown.
  9. AIRPLANE--EVACUATE through any available exit. If necessary, open window and flood cabin to equalize pressure so doors can be opened.
  10. LIFE VESTS AND RAFT--INFLATE AFTER EGRESS.

    NOTE

    Expect one or more preliminary light skips before the principal impact with the water. The principal water impact may be severe. Do not unfasten the harness too early. Do not inflate the flotation gear prior to exiting the airplane. The touchdown technique is a no-flare power touchdown. Glassy water may make judging the height above the water surface very difficult. With power available, do not attempt to guess the point at which to flare, but allow the airplane to fly itself into the water at minimum safe speed with sufficient power to keep descent rate at a safe level.

This entry was posted on Friday, January 16, 2009 and is filed under . You can leave a response and follow any responses to this entry through the Subscribe to: Post Comments (Atom) .

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