Page 1.4B Chapter 1 General JUL 2020
1-70 Service Information
1-71 Part Designation
RHC parts are designated with an alphanumeric part number beginning with letter “A”,
“B”, “C”, etc., followed by three digits and a dash number.
A revision letter or letters follow(s) the stamped or ink-marked part number. Revision
progression is A thru Z, followed by AA thru AZ, followed by BA thru BZ, etc. Unless
otherwise specified, any revision of the same part number is interchangeable, such as
“A101-1 A” and “A101-1 D”.
A change in dash number indicates a change in form, fit, and/or function (e.g. part
number C339-1 is not interchangeable with part number C339-10 even though both are
jackshaft weldments for [hydraulic] R44s). Similarly, part numbers F049-6 and F049-06
are not interchangeable because the dash numbers are different.
1-72 Returning Parts
All parts shipped to RHC must include a signed Component Return/Authorization (CRA)
Form available online at www.robinsonheli.com.
1-73 Ordering and Shipping
Procure parts from any R66 Dealer or Service Center, or order directly from assigned RHC
Customer Service Representative via email, fax, or phone.
1-74 Warranty Claims
Complete CRA Form (refer to § 1-72) and, in the Warranty Claim section, indicate if
rotorcraft or component is under warranty. If claim is for parts or for labor allowance
due to a Service Bulletin issued against rotorcraft or component, write in “per SB-XX”
adjacent to requested warranty action.
1-75 Customer Service Directory
Please visit www.robinsonheli.com for a complete service directory.
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