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Preface

What is the significance of the number 500 in IFR required reports?

1.

The typical descent rate on an ILS glideslope at 90 kt

2.

The inability to climb or descend at least 500 fpm

3.

The approximate number of departure procedures (formerly SIDs) in the U.S.

4.

To help us remember that large public events (like Daytona 500 and Indianapolis 500 races) usually have TFRs

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