REDESIGN OF REAR CARRIAGE YOKE ASSEMBLY (J75 ENGINE INSTALLATION)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP89B00980R000200170064-5
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 3
• Document Creation Date: December 12, 2016
• Document Release Date: July 2, 2002
• Sequence Number: 64
• Publication Date: February 18, 1964
• Content Type: FORM

Approved
-.--For= el
98880
IN.
ENGINEERING STUDY' El
raoc~ra A1~cRAgr CORP.
f ~'" -iT3
CHANGE PROPOSAL ?
,
'
DATE ry
AFFECTS : WSPO El PROJECT
l~ Pebr~~ary'-lei
NAME.. OF MAJOR COMPONENT
PART OR LOWEST SUBASSEMBLY
PART NO. & MODEL OR TYPE
YOl ASMMLY
TITLE OF PROPOSAL : Redesign of Rear Carriage Yoke A~ISembly (J75 Engine Installation)
NATURE OF PROPOSAL
SEE PAGE 2
..REASON FOR PROPOSAL : Over. the past 2 ; years a large ntity of yoke assemblies
reto'xrked. because of thread failure on adJuatent bolt P/N .'H$1.
have been
fai]ire vas caused by exoentrie lording on the bolt and rough thread
Thread-
surfaces. Witting bolt should be replaced by a larger bolt with rolled threads
and the yoke assemblies modified accordingly.
ESTIMATED COST AND TIME-INVOLVED
ES
ADDITIONAL FUNDING REQUIRED :
ESTIMATED COST FOR KITS OR PARTS 2 and 3
C -
ADDITIONAL -FUNDING REQUIRED : NONE - Sp-1922
ITEMS AFFECTED BY PROPOSAL
SAFETY
MISSION
EFFEC?
PERFORM-
ANCE
OPERATING
PROCEDURE
INTER.
CHANGE-
WEIGHT OR
WEIGHT ?
TOOLS a
SUPPORT
MAINTE?
NANCE
SERVICE
LIFE
FLIGHT
MANUAL
MAINTE-
NANCE
TIVENESS
ABILITY
VALANCE
EQUIPMENT
PROCEDURE
MANUAL
^
a
^
^
?
^
?
^
a
^
a
EST. MAN/HRS. REQ'D. TO ACCOMPLISH CHANGE IN FIELD
SOURCE OF PARTS FOR KIT
AVAILABILITY WEEKS AFTER APPROVAL
LAC
SEE PAGE 3
DISPOSITION OF SPARES AFFECTED
S
REWORK
INITIATED BY :
APPROVED :. 7
Applied For Release 2002/08/,21?: Cl
pArfomw
00170064-5
,O E41A
AT
 Approved For) Release 2002/08/21 : CIA-RDP89B0098OR000200170064-5
LAC-173
Fare 2 of 3
provide clearance for. new bolt head. Replace engine aft support link P/N 75F32
with new link to aeootaodate new yoke.
lcplac^ Lst1x rear er.^ Brie earriar'e yoke F/17 12CI:27 with new yoke assex bl-r
incorporating a 3/I1- dia~.neter carriage adjustment bolt Instead o; the pr~!scnt
P/N 75.-;41 1/2 dis eter `colt.
Rework and reidertif r P/N 75G7725 cradle asse bly ard, replace P591'2' to
ace-!?? lt. Rework P/N- 75G,1124 Track Support station 555 bulkl'ead to
Kit to replace P/N 75P32 on all airplanes and engine (1:C's with new part.
Kit to rework P
/N 75C M26 Cradle and provide new parts to replace
,
P/N 75t .28 washer and P/iN 75GP 7 Yoke.
hint to rework P/N ; 5GII24track s11 or-t.
1.. Incorporation of tLese 3 na ifications must be eoordi.at,td to a.ssrre
proper (round handling F;quip:zent is available after eni-ine az ci airpla?-,e
1-its are incorporated
.
2. Contractor recorr ends factory rework of F/N ;5C'26 Cradle.
There is no wei ht c'.ian,Te to the aircraft.
Approved For Release 2002/08/21 : CIA-RDP89B00980R000200170064-5
25X1
 25X1 Approved For Release 2002/08/21 : CIA-RDP89B0098OR000200170064-5
Approved For Release 2002/08/21 : CIA-RDP89B0098OR000200170064-5