Airborne Optical Sextant
A precision optical instrument for celestial navigation in aircraft, measuring angles between celestial bodies and horizon. Falls under HTS 9014.20.20.00 as an optical aeronautical navigation appliance, traditionally used for backup positioning.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used for marine or terrestrial surveying
Ranging and surveying instruments outside aeronautical context use Chapter 90 headings.
If when sold as revolution counter accessory
Speed measuring accessories without primary optical navigation function shift headings.
If other aircraft instrument patterns
Drawing/measuring instruments for aircraft not navigational classify separately.
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Import Tips & Compliance
• Certify aviation-grade materials resistant to vibration and pressure changes
• Include calibration certificates traceable to nautical almanac standards
Related Products under HTS 9014.20.20.00
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Aircraft Optical Attitude Indicator
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Aviation Heads-Up Display (HUD) Optics
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Optical Drift Meter for Spacecraft
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