| 1. | His rationale : navigational safety and stepped-up commercial traffic.
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| 2. | And only then were errors discovered in the original navigational data.
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| 3. | The satellites orbit Earth every 12 hours emitting continuous navigational signals.
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| 4. | Being a former Eastern Airlines captain, Alex likes navigational challenges.
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| 5. | But the best part of Action Files is its navigational tools.
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| 6. | Nobody knows yet why people make the navigational choices they do.
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| 7. | To correct a navigational system failure, NASA sent new software.
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| 8. | Airline officials explain that cell use can interfere with navigational equipment.
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| 9. | Airline officials explain that cellphone use can interfere with navigational equipment.
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| 10. | The race is going to be tough enough without navigational distress.
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