Aircraft Parts HTS Classification: Heading 8807, Engines and the ITAR Question
Chen Cui Co-Founder of GingerControl Aircraft parts HTS classification starts in heading 8807, which covers parts of balloons, airplanes, helicopters, spacecraft and unmanned aircraft. A part only lands there if Note 2 to Section XVII does not send it elsewhere: valves stay in 8481, electrical units in Chapter 85, instruments in Chapter 90, and turbine engines and their parts in 8411. Duty-free entry under the Agreement on Trade in Civil Aircraft then depends on the heading carrying a Free (C) rate, and export jurisdiction (ITAR USML Category VIII or EAR 9A610 and 9A991) is a separate question decided by design intent.
In this post
- Where do aircraft parts go in the HTS?
- Which aircraft parts never reach heading 8807?
- How are aircraft engines and engine parts classified?
- When do aircraft parts enter duty free as civil aircraft?
- Is the same aircraft part ITAR or EAR for export?
- What engineering data settles both classifications?
- Where aircraft part classification fits in your parts master
- References
For an aerospace supplier or MRO shop importing a few thousand part numbers a year, those are three determinations per part number, made from three different facts. Codes and rates below were checked against HTS Revision 21 (2026), current from October 9, 2026, on October 15, 2026; the export control text against the eCFR as of October 9, 2026. Recheck before you file.
Where do aircraft parts go in the HTS?
Chapter 88 of the Harmonized Tariff Schedule of the United States (HTSUS) is titled "Aircraft, Spacecraft, and Parts Thereof". It has six headings, and only one of them holds parts of the main aircraft types:
| Heading | What it covers | Column 1 General rate (Rev. 21) |
|---|---|---|
| 8801 | Balloons, dirigibles, gliders, hang gliders and other non-powered aircraft | Free |
| 8802 | Helicopters, airplanes, spacecraft and launch vehicles (statistically split into military and other) | Free |
| 8804 | Parachutes, paragliders and rotochutes, and parts | 3% |
| 8805 | Launching gear, deck arrestors, ground flight trainers, and parts | Free |
| 8806 | Unmanned aircraft, split by take-off weight | Free |
| 8807 | Parts of goods of heading 8801, 8802 or 8806 | Free |
Bottom line: For a compliance lead reviewing old ruling files, the parts heading is 8807. Many CBP rulings before 2022 cite 8803, and CBP itself noted in N334940 (2023) that aircraft parts are now in heading 8807, "which was formerly provided for in heading 8803."
Heading 8807 has four subheadings: 8807.10 for propellers and rotors, 8807.20 for undercarriages, 8807.30 for other parts of airplanes, helicopters or unmanned aircraft, and 8807.90 for other parts, including parts of communications satellites at 8807.90.30. Each of 8807.10, .20, .30 and .90.90 splits at the statistical level into "For use in civil aircraft" (with a pointer to General Note 6) and "Other" [1].
Two current rulings show what a clean 8807 classification looks like. In N334940 (September 2023), a galley door assembly of honeycomb panel, aluminum hinge and latch for a commercial aircraft went to 8807.30.0030 after CBP rejected furniture heading 9403: an aircraft galley is not furniture, so its door cannot be a furniture part [2]. In N359923 (April 2026), a purely mechanical rotary geared actuator that drives a widebody airliner's leading-edge flaps went to 8807.30.0030 rather than 8483, because the Explanatory Notes to heading 8483 exclude transmission equipment designed for use solely or principally with aircraft [3].
Which aircraft parts never reach heading 8807?
This is where most aircraft part misclassifications start. Note 2 to Section XVII lists goods that are never "parts" or "parts and accessories" of Section XVII articles, "whether or not they are identifiable as for the goods of this section" [4]. A part number that only fits one airframe can still be excluded.
| Section XVII Note 2 exclusion | Where it goes instead | CBP example |
|---|---|---|
| 2(a) Joints, washers and similar, and vulcanized rubber articles | By material, heading 8484 or 4016 | |
| 2(b) Parts of general use of base metal (Section XV Note 2, which includes articles of 8302) and similar plastics | Section XV or Chapter 39 | N334940: stainless galley kick plate in 8302.41.6015 |
| 2(e) Machines of 8401 to 8479, valves of 8481, bearings of 8482, and 8483 transmission goods that are integral engine parts | Chapter 84 | HQ 955159: landing gear pressure-reducing valve in 8481.10.00 |
| 2(f) Electrical machinery and equipment | Chapter 85 | HQ 954987: forward attendant panel in 8537.10.00 [14] |
| 2(g) Articles of Chapter 90 | Chapter 90 | |
| 2(ij) Arms | Chapter 93 | N350490: countermeasure dispenser in 9301.90.9090 |
| 2(k) Luminaires and lighting fittings of 9405 | Heading 9405 |
Bottom line: For an MRO buyer sorting a mixed shipment of 40 line items, check every line against Note 2 before reaching for 8807. The exclusion applies even when the invoice says "aircraft parts", which is exactly what the importer's invoice said in HQ 955159.
Only after Note 2 clears does Note 3 apply. It reads: "References in chapters 86 to 88 to 'parts' or 'accessories' do not apply to parts or accessories which are not suitable for use solely or principally with the articles of those chapters" [4]. A bracket sold into marine, rail and aerospace markets alike fails this test and classifies by its material or its own heading.
The order matters for duty, not only for statistics. In HQ 955159 (1993), the importer protested the liquidation of a landing gear valve, arguing that it was a duty-free undercarriage part under the old 8803.20.00. CBP held that "articles of heading 8481 are precluded from classification in heading 8803" and classified the valve in 8481.10.00 as a pressure-reducing valve, then dutiable at 3.7 percent [5]. In Revision 21, 8481.10.00 carries a 2% Column 1 General rate and its Special column lists no C indicator, so the civil aircraft provision does not reach it [1].
How are aircraft engines and engine parts classified?
Engines are machines of Chapter 84, so Note 2(e) keeps them and their parts out of Chapter 88 entirely. The engine type picks the heading [1]:
| Engine or part | HTS provision | Column 1 General rate (Rev. 21) |
|---|---|---|
| Spark-ignition piston aircraft engines | 8407.10.00 (civil split at statistical level) | Free |
| Turbojets, by thrust (25 kN break) | 8411.11.40 and 8411.12.40, aircraft turbines | Free |
| Turbopropellers, by power (1,100 kW break) | 8411.21.40 and 8411.22.40, aircraft turbines | Free |
| Other gas turbines, by power (5,000 kW break) | 8411.81.40 and 8411.82.40, aircraft turbines | Free |
| Parts of turbojets or turbopropellers | 8411.91.10 (certain cast iron), 8411.91.90 (other) | Free |
| Parts of other aircraft gas turbines | 8411.99.10 (certain cast iron), 8411.99.90.90 | Free; 2.4% on 8411.99.90 |
| Reaction engines other than turbojets | 8412.10.00 | Free |
Bottom line: For a supplier shipping engine parts, the 8411.91 versus 8411.99 split matters. Parts of turbojets and turbopropellers sit in a Free subheading, while parts of other gas turbines under 8411.99.90 carry 2.4% unless a special program, including C, applies.
N359998 (April 2026) is a current example. Dimensionally complete but uncoated turbine blades, made for a civil turbofan and imported only for a coating process before re-export, went to 8411.91.9085, "Parts of aircraft turbines: Other." CBP added that 8411.91.9085 "is a CAA eligible provision" and that the evidence supplied supported Agreement treatment [6]. The blades were still parts of the engine, not of the airplane, even though they were never going anywhere else.
One nuance cuts the other way. Note 2(e) excludes heading 8483 goods only "provided they constitute integral parts of engines or motors." A gearbox inside an engine stays in 8483; a gearbox that drives a flap, outside the engine, can be an aircraft part. That is the line N359923 drew for the flap actuator [3].
When do aircraft parts enter duty free as civil aircraft?
The civil aircraft provision is General Note 6 to the HTSUS, which implements the Agreement on Trade in Civil Aircraft. It works on the rate column, not on the product: "Whenever a product is entered under a provision for which the rate of duty 'Free (C)' appears in the 'Special' subcolumn and a claim for such rate of duty is made, the importer ... shall be deemed to certify that the imported article is a civil aircraft, or has been imported for use in a civil aircraft and will be so used" [7].
"Civil aircraft" under General Note 6(b)(i) covers aircraft, aircraft engines and ground flight simulators, "including parts, components, and subassemblies thereof", used as original or replacement equipment, and manufactured or operated under an FAA certificate or a foreign airworthiness approval the FAA recognizes. Aircraft and parts purchased for use by the Department of Defense or the Coast Guard are excluded unless they meet those use and certification tests [7]. CBP's regulation, 19 CFR 10.183, adds the evidence rule: each entry summary claiming the rate "must be supported by documentation to verify the claim", including "the written order or contract" and airworthiness evidence, kept rather than filed [8].
Four practical points follow:
- The C follows the heading. In HQ 955159, CBP explained that an article "must be classifiable in a heading under the HTSUS listed in the United States Annex to the Agreement." A misclassified part can lose the benefit even if it flies on a certified airliner [5].
- Free headings still need the right statistical suffix. Heading 8807 is Free at Column 1 General (Column 2 is 27.5 percent), but its statistical suffixes separate civil from other use, so the end use is still a reporting fact [1].
- Military programs can qualify. HQ 967954 (2005) held that parts made under FAA type and production certificates remain eligible when diverted to military aircraft manufacture that meets the General Note 6 tests [9].
- Late claims are allowed, without interest. General Note 6(a) lets the importer amend the entry or file a written statement before liquidation becomes final, and any resulting refund is paid without interest [7]. GingerControl identifies and documents the opportunity; your licensed broker or counsel files.
The Chapter 99 layer has its own civil aircraft carve-outs. Heading 9903.05.88 exempts articles of civil aircraft from the Section 301 forced labor duties in force since July 24, 2026, where they meet the General Note 6 criteria and fall in a provision listed in U.S. note 52(d) to subchapter III of Chapter 99, whether or not that provision carries a Free (C) rate [10]. How that exemption interacts with each country heading is covered in the 9903.05 headings reference.
Drone parts are the exception to the Free picture. Under U.S. note 43(c)(2) to the same subchapter, parts in 8807.10.00, 8807.20.00, 8807.30.00 and 8807.90.90 for unmanned aircraft systems over 25 kg maximum take-off weight, other than systems for retail delivery, agricultural use or sale to the Department of War, fall under heading 9903.08.21, which adds 100 percent unless one of headings 9903.08.23 to 9903.08.26 applies [10]. The tiers and dates are set out in Section 232 drone tariffs.
Is the same aircraft part ITAR or EAR for export?
The import classification does not answer this. N350490 (July 2025) classified a military underwing pylon, designed to carry fuel tanks and weapons, in 8807.30.0060, the same parts heading a civil galley door uses [11]. The HTS describes what an article is; the export lists ask what it was designed for.
The order of review runs ITAR first. Supplement No. 4 to Part 774 of the EAR states that if an item "is described in the U.S. Munitions List (USML) ... including one of its catch-all paragraphs, then the item is a 'defense article' subject to the ITAR and there is no need to review the CCL" [12].
| Question | ITAR, USML Category VIII (and XIX for engines) | EAR, ECCN 9A610 and 9A991 |
|---|---|---|
| Whole aircraft | VIII(a): bombers, fighters, attack helicopters, armed aircraft and other listed types | 9A610.a: military aircraft specially designed for military use and not enumerated in VIII(a); 9A991.b: aircraft n.e.s. |
| Parts | VIII(h)(1): parts specially designed for listed aircraft (for example F-35, B-21, F-47), excluding parts common to unlisted aircraft that are or were in production | 9A610.x: parts specially designed for 9A610 aircraft or Category VIII articles, n.e.s.; 9A991.d: parts specially designed for aircraft, n.e.s. |
| Engines | XIX(a): turbofans and turbojets of 15,000 lbf thrust or more with afterburners, nozzle vectoring or other listed features | 9A619 for military engines; 9A991.c: aero gas turbine engines and parts |
| Technology | VIII(i): technical data and defense services directly related to Category VIII articles | 9E610 for 9A610 items; 9E991 for 9A991 items |
| Agency | State Department, DDTC | Commerce Department, BIS |
Bottom line: For an engineer supplying parts to both a business jet line and a fighter program, the program list in VIII(h)(1) decides more than the part's shape. A part common to a listed aircraft and an unlisted one that is or was in production falls outside VIII(h)(1). Unless another Category VIII(h) paragraph enumerates it, the analysis moves to the CCL: the 600 series first (the enumerated 9A610 paragraphs, including the 9A610.y list, then the 9A610.x catch-all), and 9A991.d only if no other entry describes it.
Three rules in 22 CFR 120 carry most of the weight [13]:
- Specially designed, with release paragraphs. Section 120.41(b) releases fasteners, washers, springs and wire regardless of form or fit, parts with "the same function, performance capabilities, and the same or equivalent form and fit" as a part used in a production item not on the USML, and parts developed for both USML and non-USML use. Releases (b)(4) and (b)(5) require documents "contemporaneous with its development."
- Integration does not launder control. Section 120.11(c): "Defense articles described on the USML are controlled and remain subject to this subchapter following incorporation or integration into any item not described on the USML, unless specifically provided otherwise in this subchapter." Category VIII carries one such exception: certain VIII(h) parts are licensed by Commerce when incorporated in a 9A610 aircraft, while replacement parts stay under the ITAR.
- When in doubt, ask DDTC. Section 120.4 provides the commodity jurisdiction procedure "if doubt exists as to whether an article or service is covered by the U.S. Munitions List," submitted on Form DS-4076 under Section 120.12.
The jurisdiction call belongs to the company's empowered official or export counsel, and to DDTC where a commodity jurisdiction request is filed. The regime-level choice is set out in ITAR vs EAR: which applies, the CCL lookup routes in how to find your ECCN, and the drone entries (9A012, 9A120 and the UAV paragraphs of Category VIII) in drone export controls by ECCN.
Quotable insight: An aircraft part answers three questions at the border, and each turns on a different fact. The HTS asks what the article is, so a landing gear valve stays a valve in 8481. General Note 6 asks how it will be used and under which airworthiness approval. The USML and the CCL ask what it was designed for and when. A parts master that stores only a part number and a description can answer none of the three.
What engineering data settles both classifications?
Every determination above depends on a fact that usually sits with engineering, quality or contracts, not with the compliance team. The table maps each fact to the questions it answers:
| Data element | HTS question it answers | Export question it answers |
|---|---|---|
| Function, and whether the part is itself a valve, bearing, machine, electrical or optical good | Section XVII Note 2 exclusion, heading choice | Which CCL category or USML paragraph to start from |
| Material and construction | Parts of general use, material headings | Rarely decisive alone |
| Every aircraft and engine program it fits | Note 3 "solely or principally" test; 8411 versus 8807 | VIII(h)(1) listed aircraft, common-part exclusion |
| Airworthiness approval (FAA or recognized foreign) | General Note 6(b)(i)(B), 19 CFR 10.183 evidence | Not decisive by itself |
| End user (civil operator, DoD, foreign military) | General Note 6(b)(ii), statistical suffix | License requirements, 9A610 country controls |
| Development history and contemporaneous design documents | Not used | 120.41(b)(4) and (b)(5) releases |
Bottom line: For an aerospace supplier with several thousand active part numbers, the classification is only as good as the attributes behind it. Collect them once per part number, keep them with the decision, and recheck both classifications when an engineering change touches function, material or program fit.
The same discipline applies one section over. The Section XVI notes that govern Chapter 84 and 85 goods, including the valves and electrical units that Note 2 pushes out of Chapter 88, are worked through in machinery HTS classification under Section XVI, and the closest sibling vertical, Chapter 87 and its origin rules, in HTS classification for auto parts.
Where aircraft part classification fits in your parts master
Aircraft parts reward reasoning over keyword matching, because the invoice description ("aircraft part") is the least useful fact on the page. The GingerControl HTS Classification Researcher asks for the missing product facts before it suggests a 10-digit HTS code, reads similar CROSS rulings during the classification rather than after, and writes the GRI reasoning and the Section and Chapter Notes it applied into a report. It is a research tool that supports the classification decision a licensed professional makes; it does not provide legal advice. GingerControl's separate Export Control Classifier works under the EAR and the Commerce Control List only, and does not cover the ITAR or the USML, so the Category VIII question stays with your empowered official and counsel.
For a group running several plants and part masters, GingerOS is GingerControl's AI trade compliance platform. It runs on your process: it watches changes in your ERP, PLM and supplier records, asks for missing product facts before it suggests an HTS code, records the reasoning for your approval, and writes approved results back to your ERP with an audit trail.
References
- U.S. International Trade Commission, Harmonized Tariff Schedule of the United States, Revision 21 (2026), Chapters 84 and 88 and headings 8302, 8407, 8411, 8412, 8481
Data cited: Chapter 88 headings and rates, 8807 subheadings and statistical suffixes, engine provisions, 8481.10.00 and 8411.99.90 rates and special program indicators
Source: USITC HTS search
Accessed: October 15, 2026 - U.S. Customs and Border Protection, New York Ruling N334940, aircraft galley door and kick plate
Data cited: galley door in 8807.30.0030, kick plate in 8302.41.6015, heading 8807 formerly 8803
Source: CBP ruling N334940
Published: September 15, 2023 - U.S. Customs and Border Protection, New York Ruling N359923, rotary geared actuator
Data cited: flap actuator in 8807.30.0030; Explanatory Note exclusion from heading 8483
Source: CBP ruling N359923
Published: April 15, 2026 - U.S. International Trade Commission, HTSUS Revision 21 (2026), Section XVII Notes
Data cited: Note 2 exclusions (a) to (l), Note 3 "solely or principally" text
Source: HTSUS Chapter 86 file with Section XVII notes
Accessed: October 15, 2026 - U.S. Customs and Border Protection, Headquarters Ruling HQ 955159, twin reducing landing gear valve
Data cited: Note 2(e) applied to a valve; heading 8481 precluded from 8803; Annex requirement for Civil Aircraft Agreement treatment
Source: CBP ruling HQ 955159
Published: October 29, 1993 - U.S. Customs and Border Protection, New York Ruling N359998, unfinished turbine blades
Data cited: 8411.91.9085 classification and CAA eligibility; 19 CFR 10.183(e) documentation
Source: CBP ruling N359998
Published: April 16, 2026 - U.S. International Trade Commission, HTSUS Revision 21 (2026), General Note 6
Data cited: Free (C) claim, deemed certification, civil aircraft definition, Department of Defense exclusion, amendment before final liquidation without interest
Source: HTSUS General Notes
Accessed: October 15, 2026 - Electronic Code of Federal Regulations, 19 CFR 10.183, duty-free entry of civil aircraft, aircraft engines, ground flight simulators, parts, components, and subassemblies
Data cited: applicability, Department of Defense rule, documentation requirement in paragraph (e)
Source: 19 CFR 10.183 on eCFR
Accessed: October 15, 2026 - U.S. Customs and Border Protection, Headquarters Ruling HQ 967954, Civil Aircraft Agreement eligibility of parts for military aircraft
Data cited: parts made under FAA certificates diverted to military aircraft manufacture remain eligible
Source: CBP ruling HQ 967954
Published: November 23, 2005 - U.S. International Trade Commission, HTSUS Revision 21 (2026), Chapter 99, subchapter III, U.S. notes 43 and 52(d), headings 9903.05.88 and 9903.08.21
Data cited: exemption for articles of civil aircraft from the Section 301 forced labor duties; 8807 parts for unmanned aircraft systems over 25 kg under heading 9903.08.21
Source: USITC HTS search
Accessed: October 15, 2026 - U.S. Customs and Border Protection, New York Ruling N350490, countermeasure dispenser and pylon
Data cited: military pylon in 8807.30.0060, countermeasure dispenser in 9301.90.9090
Source: CBP ruling N350490
Published: July 7, 2025 - Electronic Code of Federal Regulations, 15 CFR Part 774, Supplement No. 1 (ECCNs 9A610, 9A991, 9E610, 9E991) and Supplement No. 4 (Commerce Control List Order of Review)
Data cited: ITAR-first order of review; scope of 9A610.a and .x, 9A991.b, .c and .d; 9A619 cross-reference
Source: 15 CFR Part 774 on eCFR
Accessed: October 15, 2026 - Electronic Code of Federal Regulations, 22 CFR 120.4, 120.11, 120.12, 120.41 and 121.1 (USML Categories VIII and XIX)
Data cited: commodity jurisdiction, order of review and integration rule, Form DS-4076, specially designed releases, Category VIII(a), (h)(1) and Note 1 to paragraph (h), Category XIX
Source: 22 CFR Part 121 on eCFR
Accessed: October 15, 2026 - U.S. Customs and Border Protection, Headquarters Ruling HQ 954987, forward attendant panel
Data cited: Section XVII Note 2(f) applied; panel classified in 8537.10.00, precluding the aircraft parts heading
Source: CBP ruling HQ 954987
Published: February 25, 1994
Questions people ask
What is the HTS heading for aircraft parts?
Heading 8807 covers parts of goods of heading 8801, 8802 or 8806: propellers and rotors (8807.10), undercarriages (8807.20), other parts of airplanes, helicopters or unmanned aircraft (8807.30) and other parts (8807.90). It replaced the older parts heading 8803, which many pre-2022 CBP rulings still cite. A part reaches 8807 only if Section XVII Note 2 does not send it elsewhere and it is suitable solely or principally for aircraft under Note 3.
Why is an aircraft valve or electrical unit not classified in heading 8807?
Note 2 to Section XVII says the expression parts does not apply to valves of heading 8481, machines of headings 8401 to 8479, electrical equipment of Chapter 85, instruments of Chapter 90 and several other groups, even when they are identifiable as aircraft parts. CBP applied Note 2(e) in HQ 955159 to a landing gear pressure-reducing valve and classified it in 8481.10.00, not as an undercarriage part.
How are aircraft turbine engines and their parts classified?
Turbojets, turbopropellers and other gas turbines go to heading 8411, which splits each engine type into aircraft turbines and other turbines. Parts of turbojets or turbopropellers go to 8411.91, other gas turbine parts to 8411.99. Spark-ignition aircraft piston engines go to 8407.10.00, and reaction engines other than turbojets to 8412.10.00. CBP ruling N359998 placed unfinished turbine blades for a civil engine in 8411.91.9085.
How does an importer claim duty-free entry for civil aircraft parts?
By entering the part under a subheading that shows Free (C) in the Special column and claiming that rate. Under General Note 6 the importer is deemed to certify that the article is for use in a civil aircraft, and 19 CFR 10.183(e) requires the written order or contract and airworthiness evidence to be kept, not filed. The claim follows the heading: a part classified in a heading without the C indicator gets no Agreement benefit.
Can the same aircraft part be ITAR-controlled for export and free of duty on import?
Yes, because the two systems ask different questions. The HTS classifies by what the article is, and the civil aircraft provision by its use and certification. The USML and the Commerce Control List classify by what the article was designed for. CBP ruling N350490 classified a military underwing pylon in 8807.30.0060, an aircraft parts heading, which says nothing about its export jurisdiction.
How do you tell a USML Category VIII part from an ECCN 9A610 or 9A991 part?
Start with the USML. Category VIII(h)(1) controls parts specially designed for listed aircraft such as the F-35 and B-21, excluding parts common to unlisted aircraft that are or were in production. If the part is not on the USML, check the 600 series next (the enumerated 9A610 paragraphs, then the 9A610.x catch-all for parts specially designed for military aircraft), then the rest of the Commerce Control List, with 9A991.d covering parts specially designed for aircraft that no other entry describes. When jurisdiction is in doubt, a commodity jurisdiction request goes to DDTC on Form DS-4076.
What part data does a team need before classifying aircraft parts?
The function and material of the part, whether it is itself a valve, bearing, machine or electrical good, the aircraft programs it fits, its airworthiness certification, the end user, and the design history behind it. GingerControl's HTS Classification Researcher asks for the missing facts before it suggests a code, reads similar CROSS rulings during the classification, and writes the GRI reasoning into a report for a licensed professional to review.
Classifying SKUs one ruling at a time?
Hand this to GingerOS.
Pick a 30-minute slot on the next page with Chen Cui, our CEO. Bring one notice or one SKU list (an ERP export, a spreadsheet or an email will do) and see what GingerOS does with it.
Reviewed by Michael Weick, LCB / CCS
