4. Variable Pitch Propellers
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5. Fixed Pitch and Ground Adjustable Propellers
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6. Engines
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7. Tachometers
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8. Weight and Balance
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9. Non-stabilized Magnetic Direction Indicators (MDIs)
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10. Survival and Emergency Equipment
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11. Emergency Locator Transmitters (ELTs)
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12. Altimetry Devices
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13. Air Traffic Control (ATC) Transponders
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14. Cockpit Voice Recorders (CVRs)
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15. Underwater Locating Devices (ULDs)
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16. Flight Data Recorders (FDRs)
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