TM 55-1520-214-23

T E C H N I C A L M A N U A L

A V I A T I O N U N I T A N D I N T E R M E D I A T E

M A I N T E N A N C E M A N U A L

ICOPTER, O B S E R V A T I O N OH-6A

This manual supersedes TM 55-1520-214-20, dated 3 May 1974 and TM 55-1520-214-34,dated 17 May 1974, including all changes.

I This copy is a reprint which includes currentpages from Changes 1 through 39. I

H E A D Q U A R T E R S , D E P A R T M E N T O F T H E A R M Y3 1 D E C E M B E R 1 9 7 6

URGENT TM 55-1520-214-23 c 39

NOTICE: THIS CHANGE HAS BEEN PRINTED AND DISTRIBUTEDOUTOF SEQUENCE. ITSHOULD BE INSERTED IN THE MANUAL AND USED. UPON RECEIPT OF THE EARLIER SE- QUENCEDCHANGE ENSUREA MORECURRENTCHANGE PAGEISNOTREPIACED

> ^ 0’ WITH A LESS CURRENT PAGE.

: \ ’

=L.&/ CHANGE HEADQUARTERS DEPARTMENT OF THE ARMY

NO. 39 WASHINGTON, DC., 12 NOVEMBER 1992

Aviation Unit and Intermediate Maintenance Manual

HELICOPTER, OBSERVATION OH-6A

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited

TM 55-l 520-214-23,31 December 1976, is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove pages Insert pages

l -4OA/l-40B 1-4OA/l-408

2. Retain this sheet in front of manual for reference purposes.

By Order of the Secretary of the Army:

Official:

42&d-

MILTON H. HAMILTON Administrative Assistant to the

Secretary of the Army

GORDON R. SULLIVAN General, United States Army

Chief of Staff

‘L/

DISTRIBUTION: To be distributed in accordance with DA Form 12-31 -E, block no. 1249, requirements for TM 55 1520-2 14-23.

URGENT

URGENT NOTICE: THIS CHANGE HAS BEEN PRINTED AND DISTRIBUTED OUT OF SEQUENCE. IT SHOULD

BE INSERTED IN THE MANUAL AND USED. UPON RECEIPT OF THE EARLIER SEQUENCED CHANGE ENSURE A MORE CURRENT CHANGE PAGE IS NOT REPLACED WITH A LESS CUR- RENT PAGE.

TM 55-1520-214-23 C 38

CHANGE

NO. 38

HEADQUARTERS DEPARTMENT OF THE ARMY

WASHINGTON, D.C., 16 September 1991

Aviation Unit and Intermediate Maintenance Manual

HELICOPTER, OBSERVATION OH-6A

TM 55-1520-214-23, 31 December 1976, is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove pages Insert pages

1-43 and l-44 l-43 and l-44

2. Retain this sheet in front of manual for reference purposes.

By Order of the Secretary of the Army:

Official:

GORDON R. SULLIVAN General, United Stkztes Army

Chief of Sttcg

PATRICIARHICKERSON Colonel, United States Army

The A&tint General

DISTRIBUTION: To be distributed in accordance with DA Form 12-31-E, block no. 1249, AVUM and

AVIM maintenance requirements for TM 55-1520-214-23.

URGENT

TM 55-1520-214-23 c 37

-. /I’ / CHANGE

I --bd"' NO. 37

HEADQUARTERS DEPARTMENT. OF THE ARMY

WASHINGTON, D.C., 15 July 1991

Aviation,Unit and Intermediate Maintenance Manual

HELICOPTER, OBSERVATION OH-6A

TM 55-1520-214-23, 31 December 1976, is changed as follows:

1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand.

Remove pages

c and d l-3 and l-4 l-9 through 1-12 l-17 and 1-18 l-33 and l-34 l-37 through l-40 l-40A/(l=40B blank) l-41 and l-42 2-37 and 2-38 2-38A/(2-38B blank) 2-39 and 2-40 2-43 and 2-44 2-448/(2-44B blank) 4-3 and 4-4 4-4A/(4-4B blank) 5-9 and 5-10 5-19 and 5-20 5-20A/(5-20B blank) 6-14A/(6-14B blank) 11-14A/(ll-14B blank) 11-15 and 11-16 11-23 and 11-24 11-53 and 11-54 11-54A/(ll-54B blank) D-l through D-4

Insert pages

c and d l-3 and l-4 l-9 through 1-12 l-17 and l-18 l-33 and l-34 l-37 through l-40 l-40A/(l-40B blank) 1-41 and l-42 2-37 and 2-38 2-388/(2-38B blank) 2-39 and 2-40 2-43 and 2-44 2-448/(2-44B blank) 4-3 and 4-4 4-4A/(4-4B blank) 5-9 and 5-10 5-19 and 5-20 5-20A/(5-20B blank) 6-14A/(6-14B blank) 11-14A/(ll-14B blank) 11-15 and 11-16 11-23 and 11-24 11-53 and 11-54 ll-54A/(ll-54 B blank) D-l through D-4

DISTRIBUTION STATEMENT A: Approved for public release; Distribution is unlimited.

TM 55-1520-214-23 c 37

2. Retain this sheet in front of manual for reference purposes.

By Order of the Secretary of the Army: GORDON R. SULLIVAN

Official: General, United States Army

Q&d-

Chief of Staff

MILTON H. HAMILTON Administrative Assistant to the

Secretary of the Army 03252

DISTRIBUTION: To be distributed in accordance with DA Form 12-31-E, block no. 1249, requirements

for TM 55-1520-214-23.

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