Customer : Y1 0 Manual: AMMJIC 

Type: ATR72 Selected effectivity: ALL All Rev. Date: Mar 01/12 

JIC 71-20-00 DVI 10000: DETAILLED VISUAL INSPEC OF ENGINE 

SHOCKMOUNTS 

DETAILLED VISUAL INSPEC OF ENGINE 

SHOCKMOUNTS 

''ONAIC ALL 

NEW TASK 

TECHNICAL OAT A 

ZONING DATA 

ACCESS : 435AL 

435AT 

435BT 

436AR 

445AL 

445AT 

445BT 

446AR 

475AL 

476AR 

ZONE: 400 

435 

445 

475 

485 

PREPARATION 

WORK 

ELAPSES TIME 

GSE 

PUBLICATIONS 

TASK DESCRIPTION 

001 WARNING 

SKILL 

MECHANIC 

01 ACCESS PLATFORM 

01"GO NO GO" GAGE 

01 SLIDE GAGE 

INSTALL WARNING NOTICE IN FLIGHT COMPARTMENT 

INDICATING THAT WORK ON ENGINES IS IN PROGRESS. 

002 PREPARATION 

1. INSTALL ACCESS PLATFORM AT LEVEL OF 

CONCERNED ENGINE. 

2. INSTALL FIRE FIGHTING EQUIPMENT. 

003 REMOVAL OF FORWARD UPPER ENGINE COWL 435AT (445AT) 

MEN 

02 

T400215-2 

MAN-HOURS 

Page 1 of ai 
Customer : Y1 0 Manual: AMMJIC 

Type: ATR72 Selected effectivity: ALL 

Rev. Date : Mar 01/12 

JIC 71-20-00 DVI10000 : DETAILLED VISUAL INSPEC OF ENGINE 

1. REMOVAL OF FORWARD UPPER ENGINE COWL 435AT 

(445AT) : 

REF. FIG. :540000-RAI-00120 

A. REMOVE SCREWS (24), (26) AND WASHERS (23) 

AND (27). 

REMOVE SCREWS (21) AND WASHERS (22) . 

B. REMOVE COWL. 

SHOCKMOUNTS 

004 REMOVAL OF LATERAL ENGINE COWL 473AL(483AL) LEFT SIDE OF NACELLES 

REF. FIG. :540000-RAI-00140 

1. OPEN QUICK ATTACH/DETACH FASTENERS (61) AND 

REMOVE PANEL. 

005 REMOVAL OF LATERAL ENGINE COWL 474AR(484AR) RIGHT SIDE OF NACELLES 

REF. FIG. :540000-RAI-00140 

1. OPEN QUICK ATTACH/DETACH FASTENERS (61) AND 

REMOVE PANEL. 

006 DETAILLED VISUAL INSPECTION OF ENGINE SHOCKMOUNTS 

REF. FIG. :712000-GVI- 00100 

1. CHECK OF FORWARD UPPER SHOCKMOUNT (1) 

A. CHECK SHOCKMOUNT MECHANICAL INTEGRITY 

(CRACKS). 

REPLACE IT IF NECESSARY. 

B. CHECK CONDITION OF ELASTOMERIC BLOCKS 

(DEBONDING OR TEARING). 

REPLACE THEM IF THE DEFECT IS GREATER OR 

EQUAL TO : 1.0 IN. (25 MM) LENGTH AND/OR 

1/8 IN. (3 MM) DEEP. 

C. CHECK THAT LOCKWIRES ARE IN PLACE. 

2. CHECK OF FORWARD LATERAL SHOCKMOUNTS (2): 

A. CHECK SHOCKMOUNTS MECHANICAL INTEGRITY 

(CRACKS). 

REPLACE THEM IF NECESSARY. 

B. CHECK CONDITION OF ELASTOMERIC BLOCKS 

(DEBONDING OR TEARING). 

REPLACE THEM IF THE DEFECT IS GREATER OR 

EQUAL TO : 1.0 IN. (25 MM) LENGTH AND/OR 

1/8 IN. (3 MM) DEEP. 

C. CHECK THAT COTTER PINS ARE IN PLACE. 

3. CHECK AFT LATERAL SHOCKMOUNTS (3): 

A. CHECK SHOCKMOUNTS MECHANICAL INTEGRITY 

(CRACKS). 

REPLACE THEM IF NECESSARY. 

B. CHECK CONDITION OF ELASTOMERIC BLOCKS 

(DEBONDING OR TEARING). 

REPLACE THEM IF THE DEFECT IS GREATER OR 

EQUAL TO : 1.0 IN.(25 MM) LENGTH AND/OR 

1/8 IN. (3 MM) DEEP. 

Page 2 of al 
Customer : Y1 0 Manual: AMMJIC 

Type: ATR72 Selected effectivity: ALL 

Rev. Date: Mar 01/12 

JIC 71-20-00 DVI10000: DETAILLED VISUAL INSPEC OF ENGINE 

C. CHECK THAT COTTER PINS ARE IN PLACE. 

NOTA 1 : RH AFT LATERAL SHOCKMOUNT 

ENGINE STOPPED, SHOCKMOUNT MAY BE 

IN CONTACT WITH THE LOWER PLATE. 

NOTA 2 : LH AFT LATERAL SHOCKMOUNT 

CONTACT MARKS ON THE LOWER SNUB 

PLATE ARE PERMISSIBLE AND ARE NOT 

GROUNDS FOR SHOCKMOUNT REMOVAL. 

007 DETAILLED CHECK OF ENGINE SHOCKMOUNTS 

REF. FIG. :712000-CHK-00100 

1. CHECKING OF FORWARD LATERAL SHOCKMOUNTS 

A. POSITION "GO NO GO" TOOL T400215-2 ON 

LEFT AND RIGHT FOWARD LATERAL SHOCKMOUNTS 

AND CHECK FOR PLAY. 

IF NOT PLAY (CLEARENCE), REPLACE ELASTOMER!( BLOCKS ON BOTH FORWARD LATERAL 

SHOCKMOUNTS AND ON THE FORWARD UPPER 

SHOCKMOUNT. 

B. WITH A CALIPER GAGE, MEASURE DEFLECTIONS 

OF LEFT THEN RIGHT FORWARD LATERAL SHOCKMOUNTS (SEE FIGURE). 

IF THE DIFFERENCE BETWEEN THE TWO MEASUREMENTS IS GREATER THAN 0.12 IN (3 MM), 

REPLACE TORQUE TUBE. 

2. CHECK OF AFT LATERAL SHOCKMOUNTS : 

A. MEASURE FORWARD AND AFT PLAY (CLEARENCE) 

ON THE LOWER STOP OF LEFT SHOCKMOUNT. 

IF THE AVERAGE PLAY (CLEARENCE) IS LESS 

THAN 0.16 IN (4 MM), REPLACE SHOCKMOUNT. 

SHOCKMOUNTS 

0081NSTALLATION OF LATERAL ENGINE COWL 474AR (484AR) RIGHT SIDE OF NACELLES 

REF. FIG. :540000-RAI-00140 

1. CHECK FOR CORRECT CONDITION OF COWL (60). 

2. POSITION COWL, CENTER CORRECTLY AND SECURE 

USING QUICK ATTACH/DETACH FASTENERS (61) 

3. IF NECESSARY, RESTORE THE RED IDENTIFICATION 

MARKS ON THE QUICK ATTACH/DETACH FASTENER 

HEADS (61). 

0091NSTALLATION OF LATERAL ENGINE COWL 473AL (483AL) LEFT SIDE OF NACELLES 

REF. FIG. :540000-RAI-00140 

1. CHECK FOR CORRECT CONDITION OF COWL (60). 

2. POSITION COWL. CENTER CORRECTLY AND SECURE 

USING QUICK ATTACH/DETACH FASTENERS (61). 

3. IF NECESSARY, RESTORE THE RED IDENTIFICATION 

MARKS ON THE QUICK ATTACH/DETACH FASTENER 

HEADS (61). 

Page 3 of el 
Customer : Y 1 0 

Type: ATR72 

Rev. Date : Mar01/12 

Manual: AMMJIC 

Selected effectivity: ALL 

JIC 71-20-00 DVI10000 : DETAILLED VISUAL INSPEC OF ENGINE 

SHOCKMOUNTS 

010 INSTALLATION OF FORWARD UPPER ENGINE COWL 435AT (445AT) 

1. INSTALLATION OF FORWARD UPPER ENGINE COWL 

435AT(445AT) 

REF. FIG. :540000- RAI- 00120 

A. CHECK FOR CORRECT CONDITION OF COWL. 

B. POSITION COWL AND SECURE WITH : 

-SCREWS (24), (26) AND WASHERS (23), 

( 2 7) . 

-SCREWS (21) WITH WASHERS (2 2). 

011 CLOSE-UP 

1 . REMOVE STEP LADDER (OR PLATFORM). 

2 . RESTORE THE AI RCRAFT TO NORMAL OPERATING 

CONDITION. 

3 . REMOVE WARNING NOTICES. 

4. REMOVE FIRE FIGHTING EQUIPMENT. 

(Ref Fig. 71-20-00 VISUAL INSPECTION OF ENGINE SHOCKMOUNTS) 

RefFi . 71-20-00 CHECK OF ENGINE SHOCKMOUNTS 

.. 1-20-00 VISUAL INSPECTION OF ENGINE SHOCKMOUNTS 

~1-20 00 CHECK OF ENGINE SHOCKMOUNTS 

Page 4 of s[ 
Customer : Y1 0 Manual: AMMJIC 

Type : ATR72 Selected effectivity: ALL 

Rev. Date: Mar 01/12 

JIC 71-20-00 DVI10000 : DETAILLED VISUAL INSPEC OF ENGINE 

o436 AT 

(44& AT) 

SECTION 

E-E 

SECTION 

0 ·0 

ENGINE MOUNT 

BATt MOTEUR 

SJ5 540000 RAI 00120 003 CAB 

SHOCKMOUNTS 

r· 

c 

SECTION 

C·C 

~22 21 

Figure 54-00-00-RAI-00120-003- FWD UPPER ENGINE COWL 

.,. 

c 

Page 5 of ai 
Customer : Y1 0 Manual: AMMJIC 

Type: ATR72 Selected effectivity: ALL All Rev. Date: Mar01/12 

JIC 71-20-00 DVI10000: DETAILLED VISUAL INSPEC OF ENGINE 

473AL/474AR 

(483AL/484AR) 

SECTION 

E·E 

SECTION 

D·D 

9SMJ 540000 RAI 00140-Q02 AAB 

FAB 

SHOCKMOUNTS 

SECTION 

C·C 

c~ I 

4! 

SECTION 

B·B 

J~~J 61 

61 

Figure 54-00-00-RAI-00140-002- LATERAL PANELS 

B 

J 

J) 

Page 6 of al 
Customer : Y1 0 Manual: AMMJIC 

Type: ATR72 Selected effectivity: ALL 

Rev. Date : Mar01/12 

JIC 71-20-00 DVI10000 : DETAILLED VISUAL INSPEC OF ENGINE 

SHOCKMOUNTS 

SJ5 712000 GVI 00100 005 C AC 

Figure 71-20-00-GVI-00100-005- VISUAL INSPECTION OF ENGINE SHOCKMOUNTS 

Page 7 of al 
Customer : Y 1 0 Manual: AMMJIC 

Type: ATR72 Selected effectivity: ALL 

Rev. Date: Mar 01/12 

JIC 71-20-00 DV110000 : DETAILLED VISUAL INSPEC OF ENGINE 

SHOCKMOUNTS 

-REAR LAT. SHOCKMOUNT 

- ATIACHE LAT. AR. 

- LH SHOCKMOUNT : CHECK THAT C1 + C2 > 0,160 in. I' mml -2-

-ATTACHE GAUCHE : VERIFIER QUE C1 + C2 > 4 mm (0. 160 in.) -2-

9SMJ 712000 CHK 00100-003 AAD/FAD 

· "GO NO GO'' GAUGE 

• OUnUAGE "GO NO GO" 

I 

·CHECK THAT A> 0 

• VERIAER QUE A> 0 

LEFT LATERAL MOUNT MEASUREMENT 

RIGHT LATERAL MOUNT MEASUREMENT 

MESURE SUR SUSPENSION GAUCHE 

MESURE SUR SUSPENSION DRQITE 

!

XL 

OR 

XR 

-CHECK THAT XL- XR • 0,120 in. (3 mml 

- VERIFIER OUE XL- XR c 3 mm (0, 120 ln.) 

Figure 71-20-00-CHK-00100-003- CHECK OF ENGINE SHOCKMOUNTS 

Page 8 of al