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.
-- --_I. ~,
‘>i I
,’