Product classification
HS code for Aircraft clocks: 9104.00
Clocks, instrument panel clocks and clocks of a similar type for vehicles, aircraft, spacecraft or vessels.
Classification of aircraft clocks under HS 9104.00
Aircraft clocks are classified under HS code 9104.00 because this heading specifically addresses instrument panel clocks and clocks of a similar type designed for vehicles, aircraft, spacecraft, or vessels. Unlike standard domestic clocks, these instruments are engineered to withstand the unique environmental conditions of flight, including vibrations, pressure changes, and extreme temperature fluctuations. The classification is determined by the functional design of the clock as an integrated part of the aircraft's control or monitoring system. Under the General Rules for the Interpretation of the Harmonized System (GRI), specifically GRI 1, the terms of the headings and any relative section or chapter notes dictate the classification. Since 9104 explicitly mentions aircraft, it takes precedence over more general clock headings. These clocks are often chronometers or precision timepieces that provide essential data to the flight crew, and their construction must meet rigorous aviation standards, which further justifies their placement in this specialized category rather than under general horological headings.
- Covers
- Cockpit instrument panel clocks
- Digital flight deck chronometers
- Mechanical aircraft clocks
- Master clock systems for large aircraft
- Emergency backup clocks for avionics suites
- Also under 9104.00
- VDO automotive clocks
- Breitling aircraft clocks
- Chelsea Clock marine clocks
- Garmin integrated vehicle clocks
- Smiths Instruments clocks
Codes often confused with 9104.00
Common mistake. Which other HS codes get confused with this one and why. Mention specific code numbers. Aircraft clocks are frequently misclassified under 9102, which covers wristwatches and pocket watches, especially when the clock is a small, portable unit. They are also often confused with 9014, which covers navigational instruments. While an aircraft clock assists in navigation, if its primary function is timekeeping, 9104.00 is the correct code. Additionally, some importers mistakenly use 9105 for other clocks, but 9104 is the specific provision for vehicle and aircraft instrument panels.
Top exporters and importers of HS 910400 (the code used for aircraft clocks), 2025
In 2025, the largest exporter of HS 910400 (the code used for aircraft clocks) in UN Comtrade data was Denmark, with 16% of world exports; the largest importer in UN Comtrade data was Saudi Arabia, with 27% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 910400, not only aircraft clocks.
Top exporters 2025 · share of world exports
- 1 Denmark $9.4M 16% of world exports
- 2 Germany $5.9M 10% of world exports
- 3 United States $5.5M 9.5% of world exports
World total: $58M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Saudi Arabia $19M 27% of world imports
- 2 United Kingdom $6.9M 9.7% of world imports
- 3 Germany $5.0M 7.0% of world imports
World total: $71M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for aircraft clocks
Brazil classifies aircraft clocks under NCM 9104.00.00: HS 9104.00 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about aircraft clocks
What is the HS code for Aircraft clocks?
The HS code for Aircraft clocks is 910400 (Clocks; instrument panel clocks and clocks of a similar type for vehicles, aircraft, spacecraft or vessels). The HS code for aircraft clocks, specifically those designed for instrument panels, is 9104.00.
How do I classify Aircraft clocks for customs?
Aircraft clocks is classified under HS code 910400 — Clocks; instrument panel clocks and clocks of a similar type for vehicles, aircraft, spacecraft or vessels. This is a 6-digit subheading level code.
Does this code include flight data recorders?
No, flight data recorders (black boxes) are classified under heading 8517 or 8521 depending on their specific recording technology, as they are electronic recording apparatus rather than timekeeping instruments.
Which countries are the top exporters of aircraft clocks (HS 910400)?
In 2025, the top exporters of HS 910400 (the code used for aircraft clocks) in UN Comtrade data were Denmark ($9.4M, 16% of world exports), Germany ($5.9M) and the United States ($5.5M). World exports came to about $58M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of aircraft clocks (HS 910400)?
In 2025, the top importers of HS 910400 (the code used for aircraft clocks) in UN Comtrade data were Saudi Arabia ($19M, 27% of world imports), the United Kingdom ($6.9M) and Germany ($5.0M). World imports came to about $71M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Aircraft clocks the same in all countries?
The base HS code 910400 for Aircraft clocks is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for aircraft clocks in Brazil?
In Brazil, aircraft clocks (HS 910400) is classified under NCM 9104.00.00.