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Minnesota Wing Aircrew Training: Task P-2027

Minnesota Wing Aircrew Training: Task P-2027. Visual Search Patterns and Procedures. Visual Search Patterns and Procedures. Trackline or Track Crawl (Route Search). Track of missing aircraft. Track of search aircraft. 1/2 S. 1/2 S. Trackline.

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Minnesota Wing Aircrew Training: Task P-2027

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  1. Minnesota Wing Aircrew Training: Task P-2027 Visual Search Patterns and Procedures

  2. Visual Search Patterns and Procedures

  3. Trackline or Track Crawl (Route Search) Track of missing aircraft Track of search aircraft 1/2 S 1/2 S

  4. Trackline • A.K.A. Track Crawl or Route SearchVariations:TSR: Trackline Single Unit ReturnTSN: Trackline Single Unit Non-return • Used when aircraft disappeared without a trace – few clues available • Often used on initial response – i.e. often the first pattern used • Sometimes used at night in hope of picking up lighted or electronic distress signal

  5. Multiple Unit SearchesExample: Trackline Multiunit Return (TMR)

  6. Multiple Unit Searches • Many search patterns have multiple unit variants. • We generally don’t use them, because they require more training in order to do them safely

  7. Parallel Track

  8. Parallel Track • PS: Parallel Track Single Unit • A.K.A. Grid Search • Used when… • Approximate location of target is unknown • search area is large and fairly level

  9. Creeping Line Direction of Search s s s s s

  10. Creeping Line • CS: Creeping Line Single Unit • Used when… • Search area is long, narrow, and fairly level • Target thought to be near a track within two points

  11. 2S Expanding Square(second pass rotated 45°) 4S 5S 3S S 2S 4S 3S 5S

  12. Expanding Square • Square Pattern • Used when… • Approximate position of target is known • Difficult – requires precise navigation • If repeated, pattern is rotated 45 degrees

  13. Sector Search S max The pattern and headings are planned in advance S mean Sector search is easier to fly than expanding square This pattern is used when an electronic search has led the crew to a general area to find the exact location visually The pattern provides concentrated coverage near the center of the area

  14. Sector Search • VS: Sector, Single Unit • “Six sector” most common variant • Used when position of target is known within close limits • Very intensive coverage near center • Easier than expanding square • Turns are all to the right (an arbitrary standard) • “Four sector” search can also be done

  15. Contour Search This is a most difficult and dangerous pattern to fly Requires special training Don’t try it when winds or turbulence are bad Watch density altitude Ensure the aircraft has the required performance for the mission

  16. Contour Search (cont.) • Search starts at highest peak and moves down • After each contour is completed, altitude is decreased (usually 500 feet) • Decent is done with a turn, opposite in direction from search turns

  17. Contour Search (cont.) • Record areas searched and not searched – some peaks or valleys will be shrouded in clouds • On map, shade areas that were searched

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