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instrument flying regulations
instrument flight rules


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  • Ifrcs

    International Federation of Red Cross and Red Crescent Societies

  • Ifrro

    International Federation of Reproduction Rights Organizations

  • Ifs

    [if] /ɪf/ conjunction 1. in case that; granting or supposing that; on condition that: Sing if you want to. Stay indoors if it rains. I’ll go if you do. 2. even though: an enthusiastic if small audience. 3. whether: He asked if I knew Spanish. 4. (used to introduce an exclamatory phrase): If only Dad […]

  • I.F.S.

    1. Irish Free State.

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