Loading...
HSChapter 84
U.S. imports of parts for aircraft spark-ignition, rotary & compression-ignition piston engines (HS 840910) totaled $14.7M in April 2026, traded with 35 countries.
Importers of Parts for Aircraft Spark-Ignition, Rotary & Compression-Ignition Piston Engines paid $306K in duties in April 2026 — an effective duty rate of 6.1% on $5.0M in dutiable value, based on actual customs collections rather than the published tariff schedule. Parts for Aircraft Spark-Ignition, Rotary & Compression-Ignition Piston Engines imports of $14.7M in April 2026 ran 12% above the year-to-date monthly average of $13.1M.
Last updated: April 2026 dataDedicated to engine components destined for aircraft powerplants, this heading splits at the 10-digit level between civil aviation use (8409100040) and non-civil aircraft applications (8409100080) — a distinction that drives both duty treatment and FAA regulatory requirements. Parts entering civil aircraft maintenance supply chains must meet FAA airworthiness standards, and importers often rely on FAA Form 8130-3 or equivalent bilateral aviation authority documentation. Japan, Italy, and Canada are the leading US suppliers under this heading, with Canada's proximity and USMCA eligibility making it a particularly efficient source for MRO operations.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Parts for civil aircraft engines generally require an FAA Form 8130-3 (Airworthiness Approval Tag) or equivalent documentation from a recognized bilateral aviation safety agreement (BASA) partner authority. Importers should also verify that the manufacturer holds the appropriate FAA Production Approval or that the parts qualify as standard parts per FAA definitions.
The civil/non-civil split (8409100040 vs. 8409100080) affects both the applicable duty rate and the regulatory pathway. Civil aircraft parts may qualify for duty-free treatment under the Civil Aircraft Agreement (GATT), while non-civil (e.g., military) aircraft parts follow a different tariff treatment and may be subject to export/import licensing requirements.
Supplier Network
Get discovered by U.S. importers searching for HS 840910 — Parts for Aircraft Spark-Ignition, Rotary & Compression-Ignition Piston Engines. Be the first supplier listed.
Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| JAPAN | $5.5M | $161K | -$5.3M |
| PANAMA | $2.3M | -- | -$2.3M |
| UNITED KINGDOM | $1.0M | $324K | -$705K |
| ITALY | $1.3M | $6K | -$1.3M |
| SINGAPORE | $648K | $619K | -$28K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8409100040 | PARTS FOR SPARK-IG OR COMP-IG PST ENG FOR CIV A/C | $12.1M | 4.01% | $155K |
| 8409100080 | PARTS FOR SP-IG OR COMP-IG FOR USE IN A/C EX CIVIL | $2.5M | 13.56% | $151K |
PARTS FOR SPARK-IG OR COMP-IG PST ENG FOR CIV A/C
PARTS FOR SP-IG OR COMP-IG FOR USE IN A/C EX CIVIL
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8409100080 | PARTS FOR SP-IG OR COMP-IG FOR USE IN A/C EX CIVIL | $5.4M |
PARTS FOR SP-IG OR COMP-IG FOR USE IN A/C EX CIVIL
6.4K kg
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| Port | Imports | Exports | Balance |
|---|---|---|---|
| JFK INTERNATIONAL AIRPORT, NY | $4.8M | $42K | -$4.8M |
| NEW ORLEANS, LA | $3.5M | $368K | -$3.2M |
| LOS ANGELES INTERNATIONAL AIRPORT, CA | $119K | $1.7M | +$1.6M |