CLA-2-84:RR:NC:MM:106 C88225
Mr. Paul L. Robert
Pratt & Whitney
400 Main Street
East Hartford, CT 06108
RE: The tariff classification of jet aircraft engine high-
pressure compressor modules and subassemblies.
Dear Mr. Robert:
In your letter dated April 20, 1998 you requested a tariff
classification ruling. You included drawings and literature with
your request.
The items in question are part number 56H277, a High-Pressure Compressor Module (HPC) Rotor and Stator Assembly; part
number 54H891-01, a HPC Compressor Stator Set; part number
56H489-01, a HPC Compressor Set; part number 54H898-01, a HPC
Compressor Set; and part number 824715, Rotor and Stator Assembly
- HPC Module. All of these parts are components of commercial
jet aircraft engines.
Part number 56H277 is the High-Pressure Compressor section
of the PW4000 aircraft gas turbine engine. The HPC consists of
multiple titanium hubs (circular solid titanium disks) into which
airfoils (rotating titanium blades and static titanium vanes) are
mechanically attached. The purpose of this assembly is to direct
air into the intake of the engine, compress it and increase the
pressure of the air, which is then channeled into succeeding hubs
and airfoils for further compression and for mixture with fuel,
combustion and eventual creation of thrust. Part number 56H277
is the top-level assembly of multiple rotor and stator hubs and
airfoils.
Part numbers 54H891-01, 56H489-01, and 54H898-01 consist of
subassemblies of the HPC described above. These parts represent
a single hub and stationary stators assembled in union with other
additional rotating and stationary hubs and airfoils into a
finished HPC.
All of the above parts are used on the PW4000 jet aircraft
engine.
Part number 824715 is the HPC used in the JT9D-series jet
aircraft engine. This assembly serves the same purpose as part
number 56H277 serves on its model.
The applicable subheading for the jet aircraft engine high-pressure compressor modules and subassemblies will be
8411.91.1060, Harmonized Tariff Schedule of the United States
(HTS), which provides for parts of aircraft turbines for use in
civil aircraft.
This ruling is being issued under the provisions of Part 177
of the Customs Regulations (19 C.F.R. 177).
A copy of the ruling or the control number indicated above
should be provided with the entry documents filed at the time
this merchandise is imported. If you have any questions
regarding the ruling, contact National Import Specialist
Patrick J. Wholey at 212-466-5668.
Sincerely,
Robert B. Swierupski
Director,
National Commodity
Specialist Division