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COLONIAL AIRLINES, INC.
La Guardia Field, N. Y.
February 13, 1951

TO: All Pilots & Dispatchers

FROM: Flight Superintendent

SUBJECT:"LOOK SEE" REGULATIONS IN CANADA & ACCEPTANCE OF PILOT REPORTS IN THE UNITED STATES 

The following clarification of rulings and regulations dealing with the acceptance of pilot reports of ceiling in the United States and the authority of a pilot to let down below his last approved cruising altitude when the latest official weather report is other than a U. S. Weather Bureau report is made due to the fact that certain misunderstandings still exist in some quarters:

AT AIRPORTS OUTSIDE THE UNITED STATES WHERE THE U. S. WEATHER BUREAU DOES NOT ISSUE THE WEATHER REPORTS.

A pilot has the authority to descend to his landing minimums regardless of the ceiling and visibility reported. If contact at landing minimums, the pilot should report visual to the tower and request permission to land. This applies to all airports in Canada. 

IN THE UNITED STATES

At airports in the United States no instrument approach procedure shall be executed or landing made at an airport when the latest U. S. Weather Bureau report for that station (airport) indicates the ceiling or visibility to be less than that prescribed by the Administrator for landing at such airport. 

All weather reports issued by licensed airline personnel at airports where they are charged with the responsibility of making official weather observations are official U. S. Weather Bureau reports as these personnel are licensed by the U. S. Weather Bureau to make such observations.
 
Acceptance of Pilot Reports. Pilots' reports of ceiling height, when made directly over an airport or within 1 1/2 miles of the boundaries thereof, have the status of official local special weather observations when acknowledged as such by the U.S. Weather Bureau under conditions when the ceiling is other than measured. Such pilot reports are not be considered official until the ground station has advised the pilot that the Weather Bureau has officially accepted the report as a special weather observation. Normally, the U.S. Weather Bureau does not accept pilot reports of visibility under any circumstances.

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