# Austro Engine Engine Mandatory Service Bulletin MSB-E4-035/1: Revision 1

- Rights: © Austro Engine. Filed by the FAA in regulations.gov docket FAA-2021-0946; AD 2021-22-20 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Austro Engine Engine Mandatory Service Bulletin MSB-E4-035/1](https://openairdocs.org/service-documents/austro-engine/msb-e4-035-1.md)
- Title as filed: MSB-E4-035-r1
- Pages: 19
- PDF: https://openairdocs.org/files/sha256/f4/62/f46244c9514aedf2de35036cef6a7363f55c186223148973fa077073952377e3
- Page: https://openairdocs.org/service-documents/austro-engine/msb-e4-035-1/file/f46244c9514a

## Text

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### Page 1

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 1-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
MANDATORY 
SSSEEERRRVVVIIICCCEEE   BBBUUULLLLLLEEETTTIIINNN   
NNNooo...   MMMSSSBBB---EEE444---000333555///111   
SSSuuupppeeerrrssseeedddeeesss   MMMSSSBBB---EEE444---000333555   
 
1. BASIC INFORMATION 
1.1. SUBJECT 
High Pressure Pump driving gear inspection 
 
1.2. RECORD OF REVISIONS 
 REV. NO DATE REASON 
 0 10-Sep-2021 First issue  
 
1 30-Sep-2021 
The possibility for a ferry flight for twin engine airplanes is 
added; 
A typo in section 2.1 is corrected; 
Instructions for inspection of cylinder head, camshaft, 
camshaft gear, and camshaft bearings added; 
Labour effort updated. 
 
1.3. DEFINITIONS AND ACRONYMS 
For the purpose of this Service Bulletin, the following definitions and acronyms apply: 
 
Affected part:  High Pressure Pump driving gear 
Fh:    flight hours 
HPP:    High Pressure pump 
p/n or p/ns:   Part number or Part Numbers 
SB:    Service Bulletin 
s/n or s/ns:   Serial Number or Serial Numbers

### Page 2

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 2-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
1.4. ENGINES AFFECTED 
Engine affected: E4 Series 
Serial numbers affected (2): All E4/E4P engine s/ns having a Cylinder Head part number 
E4A-12-500-000 installed (1) 
Part Affected: High Pressure Pump driving gear 
 
 (1) Note: To identify the cylinder head installed, refer to the maintenance manual 
E4.08.04 chapter 85. Additional Cylinder Head identification methods are provided in the 
Service Instruction no. SI-E4-016 
 (2) Note: Replacement of a High-Pressure Pump driving gear accomplished in accordance 
with the instruction of the Mandatory Service Bulletin no. MSB-E4-034 at revision 1 (or 
subsequent approved revision), is ac ceptable to comply with the requirements of 
paragraph 2.1 of this Service Bulletin for that engine. 
1.5. REASON 
Stack up of tolerances between the Cylinder Head (CH), CH cover, Camshaft Gear and High-
Pressure Pump (HPP) gear is found for those engines having a Cylinder Head part number E4A-
12-500-000 installed. This condition, if not detected, could result in premature failure of the HPP 
drive gear resulting in rail pressure loss and engine shutdown. 
1.6. TIME OF COMPLIANCE 
Before the next flight 
 
 Note: For a twin -engine aeroplane that has one or two  affected E4B/C/P engine(s) 
installed, a single ferry flight is permitted to bring the aeroplane to a location where the 
actions required by this Service Bulletin can be accomplished on the affected engines. 
1.7. CONCURRENT DOCUMENTS / REFERENCES 
If not specified, the latest revision of the concurrent/referenced documents applies 
• Maintenance Manual E4.08.04 
• Service Instruction SI-E4-016 
• Mandatory Service Bulletin MSB-E4-034 rev. 1 or subsequent approved revisions 
1.8. OTHER PUBLICATIONS AFFECTED 
None

### Page 3

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 3-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
2. TECHNICAL DETAILS 
2.1. ACCOMPLISHMENT / INSTRUCTIONS 
1. Remove the HPP in accordance with the instruction provided in the Maintenance Manual, 
chapter 73-10-03 paragraph A 
2. Clean the driving gear with Non-chlorinated brake cleaner  (recommended product 
Manufacturer: Förch, Product ID.: R510) 
3. Visually inspect the driving gear against colour criteria provided in the Appendix II 
table 1 and general condition (excessive wear, scratches): 
 Note: The gear should not be removed to perform the inspection 
 What to do if the Gear is in 
acceptable condition? 
What to do if the Gear is NOT in 
acceptable condition? 
 If the gear is in acceptab le 
conditions, then proceed to Step 
4 
Take an oil sample and send it for analysis. 
Remove the camshafts – refer to Maintenance 
Manual, Doc. No. E4.08.04, Section 85-30-00 
Subparagraph 4A (a) - (h) 
 Inspect  
in acc ordance w ith criteria provided in  the 
Appendix 2 table 2: 
• The camshaft and the camshaft gear 
• The inlet / outlet bearings of the 
camshaft 
• The cylinder head 
 Replace 
The HPP driving gear and 
If required, based on inspection results, the 
parts lis ted in the point above  (ref. to the 
process summarisation flowchart). 
 Note: In case of doubt, contact Austro Engine providing pictures of the driving gear 
4. Reinstall the HPP in accordance with the instruction provided in the Maintenance Manual, 
chapter 73-10-03 paragraph B referring to the table 3 for the tightening sequence of the 
screws 
5. Fill the execution report and send it back to service@austroengine.at

### Page 4

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 4-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
Table 3 – High Pressure Pump Tightening Sequence 
 
Figure 1 
Install the HPP tightening the screws clockwise, according 
to the figure 1 sequence with 12 Nm.: 
- Step 1 – 1 at 50% 
- Step 2 – 2 at 50% 
- Step 3 – 3 at 50% 
- Step 4 - 1 at 100% 
- Step 5 - 2 at 100% 
- Step 6 - 3 at 100% 
1 
3 
2

### Page 5 (OCR)

Austro Engine GmbH
Austro Engine  Mandatory Service Bulletin  A-2700 Wiener Neustadt  Rudolf-Diesel-Strasse 11
No. MSB-E4-035/1  Tel: +43 2622 23000
FAX: +43 2622 23000-2711
MSB-E4-035 Process summarised
Is the CH p/n
—NO-  E4A-12-500-000
Installed?
END *NO-  Is MSB-E4-034  applicable?
YES
Remove the HPP
YES
Inspect the driving
Perform MSB-E4-034  gear against colour
criteria
Is the Gear in
-NO  acceptable
conditions?
Go to
YES
Reinstall the HPP
RELEASE
TO
SERVICE
First Issue Date  Rev. No.  Revision Date  Page
10  Sep  2021  30  Sep  2021  5-19
© 2021 by Austro Engine GmbH - AUSTRIA - www.austroengine.at

### Page 6 (OCR)

JAustro Engine  Mandatory Service Bulletin  No. MSB-E4-035/1  Austro Engine GmbH  A-2700 Wiener Neustadt  Tel: +43 2622 23000  Rudolf-Diesel-Strasse 11
FAX: +43 2622 23000-2711
Replace the HPP
driving Gear
Inspect the camshaft
and the camshaft
gear
Remove the parts
according to the
latest revision of
the maintenance  Inspect the bearing  Replace
manual, then  inlet/outlet camshaft  those parts if
inspect against  necessary
the criteria
provided in this SB
Inspect the cylinder
head
is the HPP Gear
NO  p/n E4A-30-000-201
rev. AE1 or subsequent
installed?
YES
Perform an engine  Perform an engine
ground run (5min.  ground run according to
MTOP)  Maintenance Manual
Remove the HPP and
inspect the gear
Is the Gear in  RELEASE
NO  acceptable  -YES→  TO
conditions?  SERVICE
First Issue Date  Rev. No.  Revision Date  Page
10  Sep  2021  1  30  Sep  2021  6-19
© 2021 by Austro Engine GmbH - AUSTRIA - www.austroengine.at

### Page 7

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 7-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
2.2. CREDIT/COMPLIANCE 
Replacement of a  High-Pressure Pump driving gear accomplished in accordance with the 
instruction of the Mandatory Service Bulletin no. MSB-E4-034 at revision 1 (or subsequent  
approved revision), is acceptable to comply with the requirem ents of paragraph 2.1 of this 
Service Bulletin for that engine. 
2.3. ILLUSTRATIONS 
None. 
2.4. MASS (WEIGHT) 
Not affected. 
2.5. APPROVAL STATEMENT 
The technical content of this document is approved under the authority of the DOA ref.  
EASA.21J.399.

### Page 8

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 8-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
3. PLANNING INFORMATION 
3.1. MATERIAL & AVAILABILITY 
None 
3.2. SPECIAL TOOLS 
None 
3.3. LABOR EFFORT 
0.5 Hours for an acceptable gear up to 16 hours for a non -acceptable gear that requires 
additional inspections and/or parts replacement. The exact time depends on the components 
that might require replacement and do not include the waiting time between correspondence. 
 
4. REMARKS 
   
 NOTE: 
 
o All measures must be carried out by a certified engine station and certified engine 
mechanics. 
 
o The accomplishment of the instructions shown under Section 2.1 must be confirmed in 
the respective engine log book. 
 
o The accomplishment of the instructions must be carried out within the time of 
compliance according chapter 1. 
 
o In case  of doubt please contact the Austro Engine GmbH  – After Sal es Support  
(e-mail: service@austroengine.at; Tel: +43 2622 23000 2525). 
 
o For credit information contact Austro Engine GmbH – After Sales Support  
(e-mail: service@austroengine.at; Tel: +43 2622 23000 2525)  
 
5. EXPLANATORY NOTES 
5.1. SYMBOL EXPLANATION  
  
  CAUTION: Disregarding these special instructions and safety measures can cause  
   damage to the engine or other components. 
 
   NOTE:  Additional note or instruction for better understanding of an instruction

### Page 9

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 9-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
6. APPENDIX I – SERVICE BULLETIN EXECUTION REPORT 
 
Service Bulletin Execution Report 
Note: 
Aircraft owner:   
Aircraft Operator:  If different from the owner 
Aircraft:   
Aircraft Serial Number:   
Aircraft Marks:   
Engine (RH) s/n:  For single engine a/c, fill only 
one row 
Engine (LH) s/n:   
Flight Hours:   
Service center:  Company Name or reference 
of the person(s) performing 
the oil pump replacement 
Inspected HPP s/n:  Refer to the figure 2 below to 
identify the serial number  
NOTE:  A scanned version of this form must be provided to service@austroengine.at  
NOTE: The original filled version of this form, must be packe d with the rem oved gear, and 
provided to Austro Engine  
 
 
Figure 2 – HPP p/n and s/n location

### Page 10

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 10-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
7. APPENDIX II – INSPECTION REPORT 
 
Table 1 – HPP Driving inspection chart 
 
 
Fig. 1 
 
Fig. 2 
 
Fig. 3 
 
Fig. 4 
Examples of HPP gear in acceptable conditions 
 
Fig. 5 
 
Fig. 6 
 
Fig. 7 
 
Fig. 8 
Examples of HPP gear in not acceptable condition 
 
Fig. 9 
 
Fig. 10 
 
Fig. 11 
 
Fig. 12 
Examples of HPP gear in not acceptable condition 
X 
X X 
X 
X 
X X 
X 
 √  √  √  √

### Page 11

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 11-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
 
Fig. 13 
 
Fig. 14 
 
Fig. 15 
  
Fig. 16 
Examples of HPP gear in not acceptable condition 
 
Fig. 17 
 
Fig. 18 
 
Fig. 19 
 
Fig. 20 
Examples of HPP gear in not acceptable condition 
 
 YES NO Consultation with AE 
required 
HPP Driving gear 
acceptable: 
   
Note: • The possible discoloration shown in the non-acceptable gears is 
due to high friction, which generates heat. When present, the 
typical discoloration is not homogeneous and presents different 
shades from black/blue to violet/bronze. 
• Check the gear according to the discoloration criteria provided.  
• Discoloration is clearly visible on the outer surface of the gear.  
• Check also for visible discoloration on the face of the teeth. 
• Check for excessive wear of the gear. 
 
In case of doubt, fill the Appendix III and contact Austro Engine 
 
X 
X X 
X 
X 
X 
X X

### Page 12

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 12-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
Table 2 – Camshaft/camshaft gear – Camshaft inlet/outlet bearings - 
Cylinder head inspection chart 
 
 
Fig. 21 
 
Fig. 22 
 
Fig. 23 
 
Fig. 24 
Examples of normal wear of the cylinder head at camshaft bearings  
 
Fig. 25 
 
Fig. 26 
 
Fig. 27 
 
Fig. 28 
Examples of normal wear of the cylinder head at camshaft bearings 
 √  √  √  √ 
 √  √  √  √

### Page 13

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 13-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
 
Fig. 29 
  
Fig. 30 
  
Fig. 31 
 
Fig. 32 
Examples of excessive wear of the cylinder head at camshaft bearings 
 YES NO Consultation with AE 
required 
Cylinder Head 
acceptable: 
   
 The wear rate of the u pper bearing segments, which are located 
inside the cylinder head cover, and upper bearing brackets is 
normally higher compared to the  lower bearing surfaces. This is 
caused by the force of the valve springs applied to the camshafts. 
Examine the bearing segments at the cylinder cover and the cylinder 
cover for grooves and/or scratches detectable by finger. 
 
In case of doubt, fill the Appendix III and contact Austro Engine. 
X X X X

### Page 14

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 14-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
Fig. 33 
 
Fig. 34 
Examples of camshaft bearings in not acceptable conditions 
 
Fig. 35 
 
Fig. 36 
 
Fig. 37 
 
Fig. 38 
Examples of camshaft bearings in not acceptable conditions 
 YES NO Consultation with AE 
required 
Camshaft Bearings 
acceptable: 
   
Note:  Examine the inlet/outlet bearings of the cams hafts for  
discoloration, wear, grooves detectable by finger. 
 
In case of doubt, fill the Appendix III and contact Austro Engine 
X X 
X 
X X X

### Page 15

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 15-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
Fig. 39 
 
Fig. 40 
 
Fig. 41 
Examples of camshaft in acceptable conditions 
 
Fig. 42 
 
Fig. 43 
 
Fig. 44 
Examples of camshaft in not acceptable conditions 
 
Fig. 45 
Examples of camshaft in not acceptable conditions 
 YES NO Consultation with AE 
required 
Camshaft 
acceptable: 
   
Note:  Some bearing positions show a circular discoloration; this is a normal sign of 
the oil supply bore located inside the lower bearing segment. Bearing surfaces 
are acceptable when they have: 
- a homogenous, even surface 
- no circular sensitive running mark detectable by fingernail. 
Camshafts with sensitive running  marks detectable by fingernail are not 
permitted for re-use. Replace them by new ones.  
 
In case of doubt, fill the Appendix III and contact Austro Engine 
X 
X 
X 
X 
 √ 
 √  √

### Page 16

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 16-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
Fig. 46 
 
Fig. 47 
 
Fig. 48 
Examples of camshaft gear in acceptable conditions 
 
Fig. 49 
 
Fig. 50 
 
Fig. 51 
Examples of camshaft gear in acceptable conditions 
 
 
 √ 
 √  √ 
 √ 
 √  √

### Page 17

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 17-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 
 
Fig. 52 
 
Fig. 53 
Examples of camshaft gear in not acceptable conditions 
 
Fig. 54 
 
Fig. 55 
   
Fig. 56 
 
Fig. 57 
Examples of camshaft gear in not acceptable conditions 
 
Fig. 58 
 
 
Fig. 59 
Examples of camshaft gear in not acceptable conditions 
X 
X 
X 
X X X 
X 
X

### Page 18

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 18-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
 YES NO Consultation with AE 
required 
Camshaft gear 
acceptable: 
   
Note:  • Check the gear according to the discoloration criteria provided.  
• Darken gear without clear “overburn” discoloration are 
acceptable as it is the typical colour of the heat treatment of the 
material (e.g. figs. 49, 50, 51). 
• The possible discoloration shown in the non-acceptable gears is 
due to high friction, which generates heat. When present the 
typical discoloration is not homogeneous and presents different 
shades from black/blue to violet/bronze.  
• Shades of “over-burned” material are typically present on both 
face of the gear, such discoloration is clearly visible on the outer 
surface of the gear; use a magnifier, if required, to check the 
inner surface.  
• Check also for visible discoloration on the face of the teeth.  
 
In case of doubt, fill the Appendix III and contact Austro Engine

### Page 19

Mandatory Service Bulletin 
No. MSB-E4-035/1 
Austro Engine GmbH 
Rudolf-Diesel-Strasse 11 
A-2700 Wiener Neustadt 
Tel: +43 2622 23000 
FAX: +43 2622 23000-2711 
 
First Issue Date  Rev. No. Revision Date   Page 
10 Sep 2021 1 30 Sep 2021 19-19 
© 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 
8. APPENDIX III – INSPECTION SUPPORT SHEET 
This form must be filled in case support for inspection is requested t o Austro Engine. 
The form should be provided to austro engine service, whithi n the photos  of the 
inspected parts. Mark only the applicable parts. 
 
Aircraft Serial Number  
Engine Serial Number  
Service Contacts  
Note: please mark only one the applicable box. In case of not applicable/not performed, left the row blank 
Inspected and found: OK Not OK Pictures attached 
HPP Gear    
Camshaft Gear    
Camshaft    
Cylinder Head    
Bearings    
NOTE: 
 
 
 
 
 
 
 
 
 
Filled by: (Name Surname) 
 
Date: (DD.MM.YYYY)

---
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