INSPECTION OF FORWARD AND AFT TRANSMISSIONS GEAR/BEARING ASSEMBLIES FOR ALL CH--47D, MH--47D AND MH--47E AIRCRAFT

URGENT

TB 1--1520--240--20--113

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

INSPECTION OF

FORWARD AND AFT TRANSMISSIONS

GEAR/BEARING ASSEMBLIES

FOR ALL

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.

NOTE

THIS PUBLICATION IS EFFECTIVE UNTIL RESCINDED OR SUPERSEDED.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/

Bearings Assemblies Not Complied With."

This TB supersedes USAAMCOM Message 231537Z AUG 99 CH-47-SOF-99-03