All AH--64 Series Aircraft for Initial and Recuuring Inspections of the Tail Rotor Hanger Bearing Nutation

URGENT

TB 1--1520--238--20--104

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

ALL AH--64 SERIES AIRCRAFT FOR

INITIAL AND RECURRING INSPECTIONS OF THE TAIL

ROTOR HANGER BEARING NUTATION

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

18 February 2000

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THIS PUBLICATION IS EFFECTIVE UNTIL RESCINDED OR SUPERSEDED.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. 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 //--// entry shall state "In-

spect the Tail Rotor Hanger Bearings Nutation IAW TB 1--1520--238--20--104 within the next 10 flight hours

or no later than (NLT) 28 Feb 00". The red horizontal dash //--// may be cleared when the inspections of

para 8 are completed. The affected aircraft shall be inspected as soon as practical but NLT 10 flight hours

or 28 Feb 00. Failure to comply with the requirements of this message within the time frame specified will

cause the status symbol of the affected aircraft to be upgraded to a red //X//.

b. Aircraft in Depot Maintenance. Aircraft will not be issued until compliance with this TB has been

completed.

c. Aircraft Undergoing Maintenance. Aircraft will not be issued until compliance with this TB has been

completed.

d. Aircraft in Transit. For aircraft away from home station, this message authorizes a one time flight,

with intermediate stops, to return to the nearest secured maintenance facility/home station.

(1) Surface/Air Shipment. Same as para 1a.

(2) Ferry Status.

(a) Same as para 1a.

(b) Those aircraft that have a DD 250 and are at Boeing will be inspected prior to ferry to

final destination.

e. Maintenance Trainers (Category A and B). Same as para 1a.

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

of this TB, the material condition tags of all items in all condition codes listed in para 6 and 7 shall be annotated

to read (TB 1--1520--238--20--104), "Inspection of Tail Rotor Hanger Bearings Nutation, not complied with".

This TB supersedes USAATCOM Safety of Flight Message 280022Z Jan 00 (AH--64--00--ASAM--09).