ONE TIME REFURBISHMENT OF MAIN ROTOR SPINDLE, AND REPLACEMENT OF CERTAIN MAIN ROTOR THRUST BEARINGS FOR ALL UH-60 AIRCRAFT

*TB 1-1520-237-20-151

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

ONE TIME REFURBISHMENT OF MAIN ROTOR

SPINDLE, AND REPLACEMENT OF CERTAIN MAIN

ROTOR THRUST BEARINGS FOR

ALL UH-60 AIRCRAFT

Headquarters, Department of the Army, Washington, D. C.

24 March 1997

DlSTRlBUTlON STATEMENT A: Approved for public release; distribution is unlimited.

NOTE

THIS PUBLICATION IS EFFECTIVE UNTIL RESCINDED OR SUPERSEDED.

Priority Classification. Routine

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. Failure to comply with the requirements of this TB within

the time frame will cause the status symbol to be upgraded to a red "X".

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.

(2) Ferry Status. Same as paragraph 1a.

Maintenance Trainers (Category A, B, and C). Same as paragraph 1a.

Component/Parts in Stock Including War Reserves at All Levels (Depot and Others).

(1) For main rotor spindles. N/A.

(2) Upon receipt of this TB all items listed in paragraph 7 below shall be placed in condition code

"J" and retagged with a material condition tag/label - suspended (brown tag) DD Form 1575 or label DD Form

1575-1. The remarks block must reference inspection required per this TB. Upon completion of this required

inspection, item will be retagged either serviceable (yellow tag) DD Form 1574 or unserviceable/repairable

(green tag) DD Form 1577-2 dependent upon the results.

*This TB supersedes TB 1-1520-237-20-151, dated 16 August 1996.