Obstruction lights should never be used to designate boundary of field; in marking pole line, obstruction light should be placed on each pole along airport and at least three poles beyond airport in any direction; trees should be marked by lights on poles; hangars lighted with red lights; it is often practical to floodlight areas containing smoke stacks, water towers, etc.
The city goes into business
Airports
Airports ; 4 , n 3
1930
2 pages
Aufsatz (Zeitschrift)
Englisch
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