CLA-2-88:RR:NC:MM:106 C87045
Mr. Paul Robert
Pratt & Whitney
400 Main Street
East Hartford, CT 06108
RE: The tariff classification of jet aircraft engine compressor
modules and subassemblies
Dear 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 50B500, a Low-Pressure
Compressor Module (LPC) Rotor and Stator Assembly; part number
50B271, a LPC Compressor Stator Assembly; part number 56B016-01,
a LPC Compressor Stator Assembly; and part number 798714, Rotor
and Stator Assembly - LPC Module. All of these parts are
components of commercial jet aircraft engines.
Part number 50B500 is the Low-Pressure Compressor section of
the PW4000 aircraft gas turbine engine. The LPC 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 further compression
and for eventual creation of thrust. Part number 50B500 is the
top-level assembly of multiple rotor and stator hubs and
airfoils.
Part number 50B271 consists of a subassembly of the PLC
described above. This part is a single hub and stationary
stators that is assembled in union with other additional rotating
and stationary hubs and airfoils into a finished LPC.
Part number 50B016-01 is a subassembly of part number 50B271
and consists of an assembly of one titanium hub and multiple
stators.
All three of the 50B parts are used on the PW4000 jet
aircraft engine.
Part number 798714 is the LPC used in the JT9D-series jet
aircraft engine. This assembly serves the same purpose on this
model engine as part number 50B500 serves on its model.
The applicable subheading for the jet aircraft engine
compressor modules and subassemblies described above 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