DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
SERIES T171-231
Headquarters, Department of the Army, Washington, DC
23 February 2015
Distribution Statement A: Approved for public release; distribution is unlimited.
REPORTING OF ERRORS AND RECOMMENDING IMPROVEMENTS
You can improve this manual. If you find any mistakes or if you know of a way to improve
these procedures, please let us know. Mail your letter or DA Form 2028 (Recommended
Changes to Publications and Blank Forms) directly to Commander, US Army Aviation and
Missile Command, ATTN: AMSAM-MSS-LP, Redstone Arsenal, AL 35898-5000. A reply will be
furnished to you. You may also provide DA Form 2028 information to AMCOM via e-mail, fax,
or the World Wide Web. Our FAX number is: DSN 788-6546 or Commercial 256-842-6546. Our
e-mail address is: 2028@redstone.army.mil. Instructions for sending an electronic 2028 may be
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For
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Paragraph
Page
IDENTIFICATION AND DESCRIPTION
Test instrument identification ............................
Forms, records and reports ..................................
Calibration description ........................................
EQUIPMENT REQUIREMENTS
Equipment required .............................................
Accessories required.............................................
Preliminary instructions......................................
Equipment setup ..................................................
Torque sensor accuracy ........................................
Final procedure.....................................................