B.T. 139-307 

REMOVE 

A494AE3EOOE0570X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 1) I 

AND RELATED DECALS \ 

F\./0 

Page 26 of 47 

DETAIL A 

BEFORE MODIFICATION 

Figure 9 

HYDRAULIC POWER SUPPLY 

(SYSTEM 1) 

REF. ,---

HYDRAULIC PULSATION 

DAMPENER 

REF 
INSTALL 

AVV004PFE6E44E0484X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 1) 

AND RELATED DECALS 

D 

~ 

B.T. 139-307 

HYDRAULIC POVVER SUPPLY 

(SYSTEM 1) 

REF. 

/ 

FWD 

DETAIL A 

AFTER MODIFICATION 

Figure 10 

Page 27 of 47 
B.T. 139-307 

FWD TRANSMISSION 

RODASSY 

REF. 

FWD TRANSMISSION 

RODASSY 

REF. 

Page 28 of 47 

VIEWD 

CLAMP BLOCKASSY LOCATION 

ON TRANSMISSION ROD ASSY 

(WAS) 

3G2910A18831 

CLAMP BLOCK ASSY 

REF. 

VIEWD 

CLAMP BLOCK ASSY LOCATION 

ON TRANSMISSION ROD ASSY 

(BECOMES) 

Figure 11 

260 

215 

100 

180 

UPPER 

ROD END 

REF. 

HYDRAULIC 

PULSATION 

DAMPENER 

REF. 
HYDRAULIC POWER SUPPLY 

(SYSTEM 2) 

REF. 

~ FWD 

POWER CONTROL MODULE 

REF. 

DETAIL B 

BEFORE MODIFICATION 

Figure 12 

B.T. 139-307 

REMOVE 

A494AE3EOOE0424X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 2) 

AND RELATED DECALS 

Page 29 of 47 
B.T. 139-307 

HYDRAULIC POWER SUPPLY 

REF. 

~ FWD 

POWER CONTROL MODULE 

REF. 

Page 30 of 47 

DETAIL B 

AFTER MODIFICATION 

Figure 13 

INSTALL 

AW004PFE5E68E0430X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 2) 

AND RELATED DECALS 

~~~ 
REMOVE 

A366A3E22C STUD ADHESIVE 

MS21919WCH12 CLAMP 

NAS1149C0332R WASHER 

MS21042L3 NUT 

NAS1149C0332R SPACER 

AUXILIARY 

HYDRAULIC 

POWER SUPPLY 

REF. 

REMOVE 

A494AE3EOOE0580X 

FLEXIBLE HOSE 

(PRESSURE AUX. SYSTEM 2) 

AND RELATED DECALS 

Q.TY 1 ) 

Q.TY 1 

B.T. 139-307 

g~~ ~ )N 

QTY1 cQs 

DETAIL C 

HYDRAULIC PULSATION DAMPENER 

REF. 

BEFORE MODIFICATION 

Figure 14 

Page 31 of 47 
B.T. 139-307 

AUXILIARY 

HYDRAULIC 

POWER SUPPLY 

REF. 

Page 32 of 47 

INSTALL 

AW005PK08C ELBOW 

HYDRAULIC PULSATION DAMPENER 

REF. 

DETAIL C 

AFTER MODIFICATION 

Figure 15 
HYDRAULIC POWER SUPPLY 

(SYSTEM 1) 

REF. 

HYDRAULIC POWER SUPPLY 

(AUXILIARY SYSTEM) 

REF. 

REMOVE 

A494AE3EOOE0570X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 1) 

AND RELATED DECALS 

B.T. 139-307 

REMOVE 

A494AE3EOOE0570X 

FLEXIBLE HOSE 

VIEW 

LHSiDE 

(PRESSURE AUX. SYSTEM 2) 

AND RELATED DECALS 

POWER 

CONTROL MODULE 

REF. 

BEFORE MODIFICATION 

Figure 16 

Page 33 of 47 
B.T. 139-307 

HYDRAULIC POWER SUPPLY 

(SYSTEM 1) 

REF. 

Page 34 of 47 

INSTALL 

AW004PFE6E44E0484X 

FLEXIBLE HOSE 

AND RELATED DECALS 

VIEW 

LH SIDE 

AFTER MODIFICATION 

Figure 17 

INSTALL 

AW004PFE6E18E0324X 

FLEXIBLE HOSE 

AND RELATED DECALS 
HYDRAULIC POWER SUPPLY 

(SYSTEM 2) 

REF. 

POWER 

CONTROL MODULE 

REF. 

VIEW 

RHSiDE 

BEFORE MODIFICATION 

Figure 18 

B.T. 139-307 

REMOVE 

A494AE3EOOE0424X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 2 

AND RELATED DECALS 

HYDRAULIC 

PULSATION 

DAMPENER 

REF. 

Page 35 of 47 
B.T. 139-307 

HYDRAULIC POWER SUPPLY 

(SYSTEM 2) 

REF. 

POWER CONTROL MODULE 

REF. 

Page 36 of 47 

VIEW 

RHSiDE 

AFTER MODIFICATION 

Figure 19 

INSTALL 

AW004PFE5E68E0430X 

FLEXIBLE HOSE 

AND RELATED DECALS 

HYDRAULIC 

PULSATION 

DAMPENER 

REF. 
HYDRAULIC POWER SUPPLY 

(SYSTEM 1) 

REF. 

HYDRAULIC POWER SUPPLY 

(AUXILIARY SYSTEM) 

REF. 

REMOVE: 

A494AE6E14E0348X 

FLEXIBLE HOSE 

(PRESSURE AUX SYSTEM 2) 

AND RELATED DECALS 

Figure 20 

B.T. 139-307 

REMOVE 

A494AE3EOOE0570X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 1) 

AND RELATED DECALS 

VIEW 

LH SIDE 

BEFORE MODIFICATION 

Page 37 of 47 
B.T. 139-307 

HYDRAULIC POWER SUPPLY 

REF. 

HYDRAULIC POWER SUPPLY 

REF. 

INSTALL 

AW004PFE6E 19E0330X 

FLEXIBLE HOSE 

AND RELATED DECALS 

Page 38 of 47 

Figure 21 

INSTALL 

AW005PK08C ELBOW 

INSTALL 

AW004PFE5E39E0448X 

FLEXIBLE HOSE 

AND RELATED DECALS 

A 

/ 

POWER CONTROL MODULE 

REF. 

VIEW 

LH SIDE 

AFTER MODIFICATION 
3G2910A18831 

CLAMP BLOCK ASSY 

REF. 

HYDRAULIC PULSATION 

DAMPENER 

REF. 

455 

345 

290 

FWD TRANSMISSION 

RODASSY 

REF. 

3G2910A18831 

CLAMP BLOCK ASSY 

REF. 

180 

3G2910A18831 

CLAMP BLOCK ASSY 

REF. 

HYDRAULIC PULSATION 

DAMPENER 

REF. 

FWD TRANSMISSION 

RODASSY 

REF. 

VIEW A 

CLAMP BLOCK ASSY LOCATION 

ON TRANSMISSION ROD ASSY 

(WAS) 

465 

355 

3G2910A18831 

CLAMP BLOCK ASSY 

REF. 

VIEW A 

CLAMP BLOCK ASSY LOCATION 

ON TRANSMISSION ROD ASSY 

(BECOMES) 

Figure 22 

285 

145 

B.T. 139-307 

UPPER ROD END 

REF. 

HYDRAULIC PULSATION 

DAMPENER 

REF. 

36.5 

HYDRAULIC PULSATION 

DAMPENER 

REF. 

Page 39 of 47 
B.T. 139-307 

HYDRAULIC POWER SUPPLY 

(SYSTEM 2) 

REF. 

ACCESSORY GEARBOX -\ 

REF. 

POWER CONTROL MODULE 

REF. 

VIEW 

RHSiDE 

BEFORE MODIFICATION 

Figure 23 

Page 40 of 47 

HYDRAULIC 

PULSATION 

DAMPENER 

REF. 

B 
"'U 

0> 

<0 

<D 

....... ~ g_ ~ -...J 

., 

<0' 

c 

... ~ 1\) ~ REMOVE 

UPPER ROD END 

REF. 

AN3-4A BOLT 

MS21 043-3 NUT 

MS21919WCH9 CLAMP 

MS21919WCH12 CLAMP 

NAS1149C0332R WASHER (Q. 

STA 4596.00 

8L 445. 00 

WL 3102.00 

A494AE2EOOE0670X 

FLEXIBLE HOSE 

REF. 

r 

DETAILC 

500 

390 

346.6 l 

VIEWB 

FWD TRA

RODASS

REF. 

3G2910A18831 

CLAMP BLOCK 

REF. 

CLAMP BLOCK ASSY LOCATION 

ON TRANSMISSION ROO ASSY 

AN3-6A BOLT 

NAS43DD3-25N SPACER 

MS21919WCH9 CLAMP {REF.) 

NAS1149C0332R WASHER {REF.) 

RE-USE EXISTING FASTENER 
B.T. 139-307 

MAIN GEARBOX 

REF. 

HYDRAULIC POWER SUPPLY 

REF. 

ACCESSORY GEARBOX 

REF. 

c 

INSTALL 

AW005PK08C ELBOW 

POWER CONTROL MODULE 

REF.; 

VIEW 

RHSIDE 

AFTER MODIFICATION 

Figure 25 

Page 42 of 47 

B 

~ 
"U 

!).) 

<0 

(!) 

.t>-

(..) 

g_ 

.t>-

--.J 

::!! 

(Q 

c:: 

(b 

I\) 

en 

UPPER ROD END 

REF. 

INSTALL 

AN3-6A BOLT (REF.) 

MS21043-3 NUT (REF.) 

MS21919WCH9 CLAMP (REF.) 

MS21919WCH19 CLAMP 

NAS1149C0332R WASHER (REF.) 

NAS43DD3-16N SPACER 

RE-USE EXISTING HARDWARE 

STA 4590.00 

BL 462.20 

WL 3 116.00 

CASE DRAIN SYSTEM 2 ~ REF. 

INSTALL 

AN3-10A BOLT 

NAS43DD3-38N SPACER 

MS21919WCH9 CLAMP (REF.) 

NAS1149C0332R WASHER (REF.) 

RE-USE EXISTING FASTENER 

REF. 

DETAIL C 

NEW FIXING 

495 FWD TRAN

RODASSY 

380 

340 

REF. 

3G2910A18831 

CLAMP BLOCK 

REF. 

VIEWS 

NEW POSITION 

OF CLAMP BLOCK ASSY 

ON TRANSMISSION ROD ASSY 
-o 

Ol 

co 

CD 

+>-+>-

Q. 

+>-

--.J 

"T1 

<0' 

s:: 

; 

1\.) 

........ 

HYDRAULIC POWER SUPPLY 

(SYSTEM 2) 

REF. 

REMOVE 

A494AE3EOOE0530X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 2) 

AND RELATED DECALS 

A 

......... 

REMOVE 

MS21042L3 NUT 

MS21919WCH14 CLAMP NAS1149D0332J WASHER 

NAS 1801-3-9 SCREW 

L BEFORE MODIFICATION 
"'U 

Ol 

<0 

CD 

01 0 

-

'-1 

"T1 

<C' 

r::: 

... 

en 

1\) 

<» 

HYDRAULIC POWER SUPPLY 

(SYSTEM 2) 

REF. 

INSTALL \ 

AW004PFE6E21E0550X 

FLEXIBLE HOSE , 

(PRESSURE SYSTEM 2) 

AND RELATED DECALS 

A 

......... 

INSTALL 

AWOOSPKOBC 

ELBOW 

GENERAL VIEW 

I 

; /t 

AFTER MODIFICATION ---',....----__,_ 
B.T. 139-307 

Page 46 of 47 

VIEW A 

BEFORE MODIFICATION 

Figure 29 

A494AE3EOOE0530X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 2) 

REF. 

FWD 
VIEW A 

AFTER MODIFICATION 

Figure 30 

B.T. 139-307 

AVV004PFE6E21E0550X 

FLEXIBLE HOSE 

(PRESSURE SYSTEM 2) 

REF. 

FWD 

.. 

Page 47 of 47 
'"} 

~~ AgustaWestland 

A Finmeccanica Company 

Prego spedire a questo indirizzo: Data: 

Please send to the following address: MODULO APPLICAZIONE BOLLETIINO TECNICO Date: 

TECHNICAL BULLETIN COMPLIANCE FORM 

AGUSTAWESTLAND s.p.A. 

Numero: CUSTOMER SUPPORT & SERVICES · ITALY Number: 

PRODUCT SUPPORT ENGINEERING OPT. 

Via del Gregge. 100 

21015 Lonate Pozzolo (VA) ·ITALY Revisione: 

Tel.: +39 0331 664905 Revision: 

Fax: +39 0331 664684 

Oenominazione Ctiente ed lndirizzo: Telefono: 

Customer Name and Address: Telephone: 

Fax: 

Data Applicazione B.T.: 

B. T. Compliance Date: 

Modello Elicottero S/N Matricota OreTotali Ore D.U.R. 

Helicopter Model Tail Number Total Hours T.S.O. 

Note: 

Remarks: 

lnformazioni: 

Information: 

AI fine di gestire le varianti alia configurazione base, in relazione all'emissione del Bollettino Tecnico, preghiamo di voler compilare il presente modulo in tutte le sue partie spedirlo all'indirizzo sopra indicate. Si ringrazia per Ia gentile collaborazione data. 

We request your cooperation in filling this form, in order to keep out statistical data relevant to aircraft configuration up-to·date. The lorm should be filled in all 

its parts and sent to the above address. We thank you beforehand for the information given.