URGENT
*TB 1-1520-240-20-90
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
ONE TIME RECORDS CHECK, VISUAL
INSPECTION FOR, AND REMOVAL OF CERTAIN
SERIAL NUMBERED 145D3400-23/-25/-32 FORWARD
SYNCHRONIZING DRIVE SHAFT ASSEMBLIES
FOR
ALL CH-47D, MH-47D, AND MH-47E AIRCRAFT
Headquarters, Department of the Army, Washington, D.C.
15 October 1996
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
NOTE
THIS PUBLICATION IS EFFECTIVE UNTIL RESCINDED OR SUPERSEDED.
1. Priority Classification. Urgent.
a. Aircraft in Use. Upon receipt of this Technical Bulletin (TB) the condition status symbol of the cited aircraft will
be changed to a Red Horizontal Dash "-". The Red Horizontal Dash "-" may be cleared when the inspection of
paragraph 8 below is completed. The affected aircraft shall be inspected as soon as practical but no later than the
task/inspection suspense date. Failure to comply with the requirements of this TB within the time frame required will
cause the status symbol to be upgraded to a Red "X".
b. Aircraft in Depot Maintenance. Inspect and correct prior to issue. Aircraft shall not be issued until compliance
with this TB has been completed.
c. Aircraft Undergoing Maintenance. Same as paragraph la.
d. Aircraft in Transit.
(1) Surface/Air Shipment. Same as paragraph la.
(2) Ferry Status. Same as paragraph 1a.
e. Maintenance Trainers (Category A and B). Same as paragraph la.
*This TB supersedes USAATCOM Message 101 555Z October 1996 (CH-47-97-ASAM-01)
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