No. Under Japan's Civil Aeronautics Act (航空法), registration (機体登録) is mandatory only for unmanned aircraft with a total weight of 100 grams or more. A drone under that threshold does not need a registration number and does not need Remote ID hardware for that reason alone. That said, the 100-gram line is a registration exemption only, not a general exemption from Japan's drone rules, export controls, or flight-location restrictions.
What Is Japan's Drone Registration Weight Threshold?#
The threshold is 100 grams total weight, measured under the Civil Aeronautics Act (航空法). Any unmanned aircraft at or above that weight must be entered in the national registry before flight, which produces a registration number (機体登録記号) that must be physically displayed on the airframe. Registered aircraft must also transmit Remote ID during flight unless the operation qualifies for a specific exemption. If your total weight, including battery and any attached payload, comes in under 100 grams, the registration and Remote ID obligations do not apply to that unit. Manufacturers building right at the edge of the threshold should treat "total weight" literally: battery, propellers, and any mounted accessory all count toward the figure, and a spec sheet that lists bare airframe weight can understate what actually gets weighed.
Does a Sub-100g Drone Still Need MLIT Flight Permission?#
Yes, if it flies in a restricted location or condition, regardless of its weight. Japan's flight-permission triggers run on where and how the aircraft flies, not on whether it was registered. Flight inside a Densely Inhabited District (DID), flight near a published airport exclusion zone, flight above 150 meters above ground level, and night or beyond-visual-line-of-sight flight all require advance permission from the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), independent of the registration weight cutoff. A sub-100g drone flown over a residential DID block on a commercial shoot still needs that permission even though it was never entered in the registry. We cover the full set of permission triggers, including the operational categories that govern licensing, in our guide to MLIT flight permission in Japan; it is the reference for reading whether a given flight profile clears the bar without a permit.
Does the 100-Gram Exemption Cover Export Control (FEFTA) Too?#
No. Export and import screening under the Foreign Exchange and Foreign Trade Act (外為法, commonly referenced as FEFTA) attaches to how the unit is classified under the Export Trade Control Order (輸出貿易管理令), and complete unmanned aircraft fall under HS heading 8806. That classification trigger does not carry a weight floor, so a sub-100g drone can still sit inside a FEFTA-controlled category depending on its configuration, sensor payload, encryption, and end use. This is a separate screening layer from registration: one governs whether the aircraft goes in the domestic registry, the other governs whether the transaction requires an export license or catch-all end-use review before the unit crosses a border. We are not stating a determination for any specific device here; the outcome depends on the actual configuration and the end-user analysis, which is exactly the kind of question that needs a proper classification review rather than a general rule of thumb. Our HS classification guide for aircraft parts, drones, and balloons walks through how the HS 8806 family is distinguished from parts headings, which is the first branch point in that review.
Key points:
(a) The 100-gram threshold under the Civil Aeronautics Act (航空法) governs registration (機体登録) and the linked Remote ID obligation only.
(b) DID, near-airport, altitude, and night-flight permission requirements under MLIT apply based on the flight profile, not the registration weight, so a sub-100g drone can still need a permit.
(c) FEFTA (外為法) screening under the Export Trade Control Order (輸出貿易管理令) attaches to HS 8806 classification and configuration, not weight, and requires a case-specific review rather than a blanket assumption either way.
If your entity is the manufacturer or a non-resident seller bringing units into Japan for distribution or field trials, the import structure itself, specifically who is named as the importer on the customs declaration, is a separate question from registration and flight permission. Our guide to IOR structures for drones, robotics, and industrial automation covers how that import position is typically set up, and where a non-resident manufacturer needs an Attorney for Customs Procedures (税関事務管理人) instead of a resident importer of record.
Frequently Asked Questions#
If my drone weighs 95 grams with the battery installed, do I need to register it at all?
If the total flying weight, battery and any attachments included, is genuinely under 100 grams, no registration is required under the Civil Aeronautics Act (航空法). Weigh the unit in its actual flight configuration rather than relying on a spec-sheet airframe weight, since batteries and mounted payloads are what most often push a unit over the line.
Does skipping registration mean I can fly anywhere in Japan without a permit?
No. Registration and flight permission are two separate obligations. A sub-100g drone that is exempt from registration can still require MLIT permission if it flies inside a Densely Inhabited District, near a published airport exclusion zone, above 150 meters, or at night beyond visual line of sight.
We manufacture a lightweight drone under 100 grams. Does that mean it is automatically clear of Japan export control?
Not automatically. Export and import screening under FEFTA (外為法) is driven by the HS 8806 classification and the aircraft's configuration and end use, which do not carry a weight exemption. A device under 100 grams can still require catch-all end-use review depending on its sensors, encryption, and buyer profile, and that determination needs to be made on the specific configuration rather than assumed from weight alone.
Conclusion#
The 100-gram line in Japan's drone rules answers exactly one question: whether the aircraft must be entered in the national registry and carry Remote ID. It does not answer where you can fly it, and it does not answer whether the unit clears export control screening. Treat the three questions as separate checks before committing to a Japan launch date.
This article is informational only and does not constitute legal, tax, or regulatory advice. Consult a qualified advisor before acting on the content. Last updated: September 2026.