DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
FORWARD AND AFT TRANSMISSIONS
CH--47D, MH--47D AND MH--47E AIRCRAFT
Headquarters, Department of the Army, Washington, D. C.
01 September 1999
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
THIS PUBLICATION IS EFFECTIVE UNTIL RESCINDED OR SUPERSEDED.
Priority Classification. Urgent
a. Aircraft in Use. Safety of Flight message CH--47--SOF--99--02 placed all H--47 series aircraft on a
red //X// condition status symbol. The red //X// imposed by CH--47--SOF--99--02 may be cleared on some
aircraft if the inspection procedures of paragraph 8 and the correction procedures of paragraph 9 of this mes-
sage are complied with. Aircraft which remain on red //X// will be maintained in flyable storage with the follow-
ing restrictions -- perform ground run UPS at ground idle, with flat blade pitch and neutral flight controls.
b. Aircraft in Depot Maintenance. Same as paragraph 1a.
Aircraft Undergoing Maintenance. Same as paragraph 1a.
d. Aircraft in Transit.
(1) Surface/Air Shipment. Same as paragraph 1a. Prior to first flight on arrival.
(2) Ferry Status.
(a) Same as paragraph 1a.
(b) Those aircraft that have a DD 250 and are at Boeing Helicopters will be inspected prior
to ferry to final destination.
e. Maintenance Trainers (Category A, and B). Same as paragraph 1a.
f. Component/Parts in Stock at All Levels (Depot and Others) including War Reserves: Upon receipt
of this TB the material condition tags of all items in all condition codes listed in paragraphs 6 and 7 shall be
annotated to read "SOF CH--47--99--03, Inspection of H--47 Aircraft Forward and Aft Transmissions Gear/
This TB supersedes USAAMCOM Message 231537Z AUG 99 CH-47-SOF-99-03