PIPER SENECA II SERVICE MANUAL
10/31/19 REVISION STATUS
1A3
REVISION STATUS
1. Definitions
A. Revision
The data in the revision column is comprised of two elements:
(1) A Type of Revision Code: ORG = Original, CR = Complete Revision, and PR = Partial
Revision.
NOTE: Partial Revisions (PR) are listed only until the next Complete Revision (CR) is published.
Then they are removed.
(2) The Revision Date in YYYYMMDD format.
NOTE: The Revision Date is the date placed on each revised page. It exists to separate one
version of a page from another. Revision Date does not indicate the calendar date when
the revision was actually published and available to the public. However, this is the date
that appears in the Current Revision Checklist in the Customer Service Information
File.
B. Publication Date
Publication Date usage has varied over the years. 1974–1996 is unknown. 1997–2013 it generally
was synchronized with the revision date regardless of when the revision was published. In mid 2013
and later, the Publication Date is the calendar date when the revision was actually published and
available to the public.
NOTE: This date does not appear in the Current Revision Checklist in the Customer Service
Information File.
2. Revisions
Revisions to this Service Manual P/N 761-590 originally published September 4, 1974 and reissued
October 11, 1979 are as follows:
Revision Publication Date
ORG740904 September 4, 1974
CR791011 October 11, 1979
PR800810 August 10, 1980
PR810316 March 16, 1981
PR821112 November 12, 1982
PR831208 December 8, 1983
PR860730 July 30, 1986
PR860920 September 20, 1986
PR870506 June 12, 1987
PR960624 June 24, 1996
PR970205 February 5, 1997
PR070430 April 30, 2007
PR090101 January 1, 2009
PR090731 July 31, 2009
PR191031 October 31, 2019
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