| 41. | Without this equipment, the airports and flight crew must conduct operations under instrument flight rules and rely on visual flight rules.
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| 42. | Visual flight rules ( VFR ) require an airspeed indicator, an altimeter, and a compass or other suitable magnetic direction indicator.
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| 43. | An even larger number of airplanes _ no one is sure how many _ fly under " visual flight rules ."
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| 44. | As the aircraft also had to use visual flight rules, during foggy weather it was also forced to land at V�rnes.
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| 45. | There are no published instrument approach procedures and the airfield is limited to Visual Flight Rules ( VFR ) operations only.
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| 46. | Both aircraft were operating under Federal Aviation Regulation Part 91 without flight plans during Visual flight rules ( VFR ) conditions.
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| 47. | Since they were flying under visual flight rules, they could not go up or down for fear of crashing into traffic.
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| 48. | It was operating under a filed visual flight rules ( VFR ) flight plan which indicated a cruising altitude of 3500 feet.
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| 49. | Only domestic day flying under visual flight rules ( VFR ) is allowed under this permit and no passengers may be carried.
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| 50. | On Wednesday, the Federal Aviation Administration allowed small planes using visual flight rules back in the skies, but only over rural airspace.
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