40220 Tarnos - France Tel +33 (0)5 59 74 40 00 - Telex 570 042 - Fax +33 (0)5 59 74 45 15



# MANDATORY SERVICE BULLETIN

ARRIUS 2 No. 319 79 4835

Subject: Lubrication device. 

## Check of the nozzle bonding on the ejector assembly



## .

The technical information contained in th is document has been approved under the Design Organization Approval No. EASA.21J.070



## Version: A



## SB_319_79_4835_EN - A <May 22, 2013> - 1 / 13

# MANDATORY SERVICE BULLETIN

1. Compliance conditions

CAUTION: FAILURE TO APPLY THIS MANDATORY SERVICE BULLETIN MAY LEAD TO AN UNCOMMANDED IN-FLIGHT ENGINE SHUT-DOWN WHICH, ON A SINGLE-ENGINE HELICOPTER, LEADS TO AN EMERGENCY AUTOROTATION LANDING. 

### A. Mandatory Service Bulleti n (SB) effectivity date Date on which this Mandatory SB becomes effective and must systematically be complied with, according to the conditions of application. If these resources are available any earlier, the Mandatory SB may, as an exception, be applied prior to the effectivity date.

JUNE 2013 or UPON RECEIVING THIS MANDATORY SB



### B. Effectivity Application of this Mandatory SB is considered mandatory as a result of a technical requirement which might affect flight safety of engines in service. It may be done as defined by the effectivity code given in the table below.

Effectivity Code

ARRIUS 2F 1-B

* The actions and conditions of application are described in paragraph 5.

Note: This Mandatory SB applies to the lubricating devices listed in Figure 4 to which SB No. 319 79 4831 (or IT Ref. 319 79 4831) has not been applied. 

## 2. Purpose (Figure 1)

CAUTION: FAILURE TO APPLY THIS MANDATORY SERVICE BULLETIN MAY LEAD TO AN UNCOMMANDED IN-FLIGHT ENGINE SHUT-DOWN WHICH, ON A SINGLE-ENGINE HELICOPTER, LEADS TO AN EMERGENCY AUTOROTATION LANDING. Check, on the fuel system, the effectiveness of the jet bonding on the equipped ejector assembly (1). 

## 3. Reason Ensure the effectiveness of the jet bonding on the equipped ejector assembly. 

## 4. Description (Figure 1) This Mandatory SB consists of checking the loosening torque of the jet (2) on the ejector support (3) for the lubrication devices concerned (see applicability note). 

## 5. Required action(s) and compliance time(s)
A. At the operator's site, at a TURBOME CA-approved Service Center or at a TURBOMECA-approved Maintenance Center Application upon receiving parts from TURBOMECA, and no later than October 31, 2013. 

### B. At a TURBOMECA-approved Repair Center Application upon return of material to an approved Repair Center no later than October 31, 2013 and regardless of the reason for return.



## SB_319_79_4835_EN - A <May 22, 2013> - 2 / 13

# MANDATORY SERVICE BULLETIN

6. Accomplishment Instructions
A. Implementation Application of this Mandatory SB does not necessitate removing the engine from the helicopter. (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center Apply IT Ref. 319 79 4831 2. (2) At a TURBOMECA-approved Repair Center Check the loosening torque of jet (2) that is bonded and screwed to ejector support (3). 

### B. Operating instructions (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center (a) Refer to IT Ref. 319 79 4831 2. (2) At a TURBOMECA-approved Repair Center (a) Remove the equipped ejector assembly: refer to the ARRIUS 2F Overhaul Manual and Component Maintenance Manual. (b) Perform a visual inspection of the equipped ejector assembly (1) (Figure 1): 1 Determine if there is any unscrewing of the jet (2) on the ejector support (3) by measuring the space between the jet and the holder: 1.1 If the jet is present and not fully unscrewed:

- Measure the space X between the jet (2) and the ejector support

(3).

- Record value X:

1.2 If jet (2) is unscrewed, verify that there is glue on the threading. 2 Check the condition of the equipped ejector assembly (1)

- No scratching or deep scoring (discernible by touch)

- No cracks in the ejector housing groove. 3 Check the condition of the equipped ejector assembly housing (trunk body or lubricating device ...)

- No scratching or deep scoring (discernible by touch) around the areas of

the seals. 4 Record the values from the visual inspections on the check result sheet (Appendix 1) (c) Check the tightening torque of the jet (2) of the equipped ejector assembly (1) (Figure 2). Check bonding of jet (2) of equipped ejector assembly (1) with ejector support (3) in accordance with Task 70-42-44-360-801 in the CTB as follows: 1 Mark the position of the jet (2) in relation to the ejector holder (3) using felt-tip pen. 2 Position the test clamping sleeve (4) on the nozzle (2) of the equipped ejector assembly (1). 3 Secure the ejector assembly with the extractor (5). X = mm



## SB_319_79_4835_EN - A <May 22, 2013> - 3 / 13

# MANDATORY SERVICE BULLETIN

4 Using a torque wrench equipped with a test clamping sleeve (4), apply a loosening torque of maximum 0.2 N.m. on the nozzle (2) of the ejector assembly: 4.1 If jet (2) rotates [reference mark for jet (2) / ejector support (3) is distorted], bonding is deemed non-compliant and it is necessary to verify that there is glue on the threading. 4.2 If there is no rotation of the jet (2) (no distortion of reference mark for jet (2) / ejector support (3)), bonding is deemed compliant. 5 Record the part number / manufacturing order of the equipped ejector assembly (1) (Figure 3) (if present) on the Check Result Sheet (Appendix 1). (d) Actions after checks:

- If the visual inspection of the ejector assembly is out of tolerance, discard and

replace the ejector assembly (1): refer to the ARRIUS 2F Component Maintenance Manual.

- If the visual inspection of the ejector assembly housing is out of tolerance: refer

to the ARRIUS 2F Component Maintenance Manual.

- If the torque check is out of tolerance, replace the equipped ejector assembly

(1): refer to the ARRIUS 2F Component Maintenance Manual. Keep the removed equipped ejector assembly (1) in quarantine storage.

- If the torque check and visual inspection are compliant, reassemble the ejector

assembly (1): refer to the ARRIUS 2F Component Maintenance Manual. 

### C. Reconditioning and checks (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center Refer to IT Ref. 319 79 4831 2. (2) At a TURBOMECA-approved Repair Center Refer to the ARRIUS 2F Overhaul Manual and Component Maintenance Manual.


### D. Identification (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center (a) If replacing the lubricating device: 1 Section "C”: Record the lubricating device replacement. 2 Section "E": Record the application of Mandatory SB No. 319 79 4835. 3 Return the technical report of IT Ref. 319 79 4831 2. 4 Notify TURBOMECA that the lubr icating device has been replaced by returning the fully completed compliance certificate (Appendix 2 of this Mandatory SB). 5 Notify TURBOMECA that this Mandatory SB No. 319 79 4835 has been applied by returning the fully completed compliance certificate (Appendix 3 of this Mandatory SB). (b) If replacing the ejector assembly: 1 Section "E": Record the application of Mandatory SB No. 319 79 4835. 2 Return the technical report of IT Ref. 319 79 4831 2. 3 Notify TURBOMECA that the lubr icating device has been replaced by returning the fully completed compliance certificate (Appendix 3 of this Mandatory SB).



## SB_319_79_4835_EN - A <May 22, 2013> - 4 / 13

# MANDATORY SERVICE BULLETIN

(2) At a TURBOMECA-approved Repair Center (a) Section "A": Record the application of Mandatory SB No. 319 79 4835. (b) Notify TURBOMECA that this Mandatory SB No. 319 79 4835 has been applied by returning the fully completed compliance certificate (Appendix 3 of this Mandatory SB). (c) Return the check result certificate (Appendix 1 of this Mandatory SB).


### E. Routine maintenance
No modification to the routine maintenance. 

## 7. Material information

A. Basic information The parts list provided below and required for the application of this Mandatory SB is for one engine. 

### B. List of parts (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center Refer to IT Ref. 319 79 4831 2. (2) At a TURBOMECA-approved Repair Center

New Part Number Key Qty Description* / Item Old Part Number Key Qty

ARRIUS 2F
0 319 91 744 0 A 1 Ejector assembly 0 319 91 744 0 I 1

9 794 42 017 0 A 1 O-ring

9 794 71 018 0 A 2 O-ring

Key A - Part required for the application of this Mandatory SB. I - Part that can be modified at the operator's site by a TURBOMECA-qualified technician or at a TURBOMECA-approved Repair Center. 

### C. Supply conditions The supply of parts will be managed by:

For Africa, Europe, Middle East
TURBOMECA-Noria Team Tarnos 40220 TARNOS France Fax : +33 (0) 5 59 74 45 72 noria-tarnos-arrius@turbomeca.fr For Australasia
TURBOMECA-Noria Team Sydney 115 Wackett St, Bankstown Airport Bankstown, NSW 2200 - Australia Fax : +61 2 9791 6708 noria-sydney@turbomeca.com.au For Asia Pacific
TURBOMECA-Noria

Team Singapore 63 Loyang Way, Singapore 508753 Fax: +65 6545 4978 noria.singapore@turbomeca.com.sg



## SB_319_79_4835_EN - A <May 22, 2013> - 5 / 13

# MANDATORY SERVICE BULLETIN

For North America TURBOMECA-Noria Team Dallas
2709 Forum Drive Grand Prairie, TX 75052 – USA Fax : +1 972 606 76 68 noria-dallas@turbomeca.com For South America
TURBOMECA-Noria Team Rio Rua Capitão Guynemer, 1626 - Xerém CEP : 25250-130 - Duque de Caxias - RJ - BRESIL Fax : +55 21 2679 2794 noria-rio@turbomeca.com.br 

## 8. Manpower
A. At the operator's site, at a TURBOME CA-approved Service Center or at a TURBOMECA-approved Maintenance Center

- Personnel: 1 TURBOMECA-qualified technician.

- Time required: 1 man-hour. 

### B. At a TURBOMECA-approved Repair Center

- Personnel of approved Repair Center.

- Time determined by the Repair Center as being appropriate for this level of intervention. 

## 9. Tooling and/or products
A. At the operator's site, at a TURBOME CA-approved Service Center or at a TURBOMECA-approved Maintenance Center
Refer to IT Ref. 319 79 4831 2. 

### B. At a TURBOMECA-approved Repair Center Refer to the ARRIUS 2F Overhaul Manual and Component Maintenance Manual. Test clamping sleeve P/N 8250750400. Extractor P/N 8819365000 or P/N TM3383G001 (alternative). 

## 10. Weight and balance Not applicable. 

## 11. Publication references

- ARRIUS 2F Maintenance Manual ........................................................... Ref. X 319 L6 301 2.

- Technical Instruction (IT)......................................................................... Ref. 319 79 4831 2.

- ARRIUS 2F Overhaul Manual ................................................................. Ref. X 319 L6 500 2.

- ARRIUS 2F Component Maintenance Manual........................................ Ref. X 79 24 05 2.

- ARRIUS 2F Spare Parts Catalog ............................................................ Ref. X 319 L6 700 2.

- ARRIUS 2F Illustrated Parts Catalog ...................................................... Ref. X 319 L6 600 2.

- SB ........................................................................................................... Ref. 319 79 4831. 

## 12. Approval The technical information contained in this document is approved under the Design Organization Approval No. EASA.21J.070. This Mandatory SB is subject to an Airworthiness Directive.



## SB_319_79_4835_EN - A <May 22, 2013> - 6 / 13

# MANDATORY SERVICE BULLETIN

FIGURE 1 1

2 2

3 Cote X Dimension X



## SB_319_79_4835_EN - A <May 22, 2013> - 7 / 13

# MANDATORY SERVICE BULLETIN

FIGURE 2 1

3

2

2

4

5 4
Clé dynamométrique Torque wrench

Vue A View A Trait de repère Reference mark



## SB_319_79_4835_EN - A <May 22, 2013> - 8 / 13

# MANDATORY SERVICE BULLETIN

FIGURE 3 Référence Part Number

Ordre de fabrication Manufacturing order



## SB_319_79_4835_EN - A <May 22, 2013> - 9 / 13

# MANDATORY SERVICE BULLETIN

S/N - S/N S/N - S/N

105M 231

108M 247

109M 254

112B 266M

120 270

122B 292M

129M 333M

134B 443M

138B 445M

141M 467M

142B 479M

147M 526M

149B 563M

210M



### FIGURE 4 Liste des N/S des groupes de lubrification concernés List of S/Ns of concerned lubricatin g devices



## SB_319_79_4835_EN - A <May 22, 2013> - 10 / 13

# MANDATORY SERVICE BULLETIN

For Africa, Europe, Middle East TURBOMECA-Noria (Team Tarnos) Fax : +33 (0) 5 59 74 45 72 noria-tarnos-arrius@turbomeca.fr For Australasia, Oceania, Japan TURBOMECA-Noria (Team Sydney) Fax : +61 2 9791 6708 noria-sydney@turbomeca.com.au For Asia Pacific TURBOMECA-Noria (Team Singapore) Fax: +65 6545 4978 noria.singapore@turbomeca.com.sg

For North America TURBOMECA-Noria (Team Dallas) Fax : +1 972 606 76 68 noria-dallas@turbomeca.com For South America TURBOMECA-Noria (Team Rio) Fax : +55 21 2679 2794 noria-rio@turbomeca.com.br

Opération effectuée par / Work performed by:

Date [JJ / MMMM (en lettre) / AAAA

ou/or DD / MMMM (letter) / YYYY] Nom / Print name Fonction / Job title

ANNEXE 1 / APPENDIX 1 Signature:



## Objet : Résultat du contrôle. Subject: Check result. Important / Important notice : Après application des instructions spécifiées dans ce SB Impératif, veuillez compléter cette attestation de résultat du contrô le et la retourner par courrier ou courriel ou fax à (cf §7.C) : After application of the instructions specified in th is Mandatory SB, please complete this check result certificate and mail or email or fax it to (refer to §73.C):

Type moteur Type of engine Numéro de Série du moteur Engine S/N Numéro de l'Ordre de Fabrication de l'éjecteur (si présent) Manufacturing Order No. of the ejector (if present) Référence du LRU LRU P/N Numéro de Série du LRU LRU S/N Nombre d'heures du LRU depuis dernière réparation LRU hour number since last repair TSN du LRU LRU TSN Contrôle visuel : Dévissage éjecteur constaté, cote X Visual inspections: Ejector unscrewing noted, dimension X OK / NOK X = mm

Etat de l'éjecteur Ejector condition OK / NOK

Etat du logement de l'éjecteur Ejector housing condition OK / NOK

Contrôle du couple de desserrage de l'éjecteur Check of ejector loosening torque OK / NOK

Si dévissage éjecteur ou couple de desserrage NOK : vérification de la présence de colle sur la vis de l'éjecteur If ejector unscrewed or ejector loosening torque NOK: Check of glue on the ejector screw OK / NOK



## SB_319_79_4835_EN - A <May 22, 2013> - 11 / 13

# MANDATORY SERVICE BULLETIN

Objet : Attestation de remplacemen t du groupe de lubrification. Subject: Compliance certificate for replacement of lubricating device.
Important / Important notice : Après application des instructions spécifiées dans ce SB Impératif, veuillez compléter la présente attestation et la retourner par courrier ou courriel ou fax à (cf § 7.C) : After application of the instructions specified in this Mandatory SB, please complete this certificate and mail or email or fax it to (refer to § 7.C):

For Africa, Europe, Middle East TURBOMECA-Noria (Team Tarnos) Fax : +33 (0) 5 59 74 45 72 noria-tarnos-arrius@turbomeca.fr For Australasia, Oceania, Japan TURBOMECA-Noria (Team Sydney) Fax : +61 2 9791 6708 noria-sydney@turbomeca.com.au For Asia Pacific TURBOMECA-Noria (Team Singapore) Fax: +65 6545 4978 noria.singapore@turbomeca.com.sg

For North America TURBOMECA-Noria (Team Dallas) Fax : +1 972 606 76 68 noria-dallas@turbomeca.com For South America TURBOMECA-Noria (Team Rio) Fax : +55 21 2679 2794 noria-rio@turbomeca.com.br
Information concernant le matériel / Equipment information

Utilisateur Customer N° Appareil Aircraft S/N

N/S - S/N Réf. - P/N TSN* TSO* CSN* CSO*

Moteur Engine

Groupe de lubrification déposé Removed lubricating device

Groupe de lubrification posé Installed lubricating device

* TSN = Time Since New (Heures depuis neuf) TSO = Time Since Overhaul (Heures depuis RG) CSN = Cycles Since New (Cycles depuis neuf) CSO = Cycles Since Overhaul (Cycles depuis RG)

Opération effectuée par / Work performed by:

Je certifie que le groupe de lubrification identifié ci-dessus a été installé selon les directives de ce SB Impératif. I certify that the above-mentioned lubric ating device has been installed accordi ng to the directives given in this Mandatory SB.
Date [JJ / MMMM (en lettre) / AAAA

ou/or DD / MMMM (l etter) / YYYY] Nom / Print name Fonction / Job title

ANNEXE 2 / APPENDIX 2 Signature:



## SB_319_79_4835_EN - A <May 22, 2013> - 12 / 13

# MANDATORY SERVICE BULLETIN

Objet : Attestation d’application du SB Impératif n° 319 79 4835. Subject: Mandatory SB No. 319 79 4835 compliance certificate.

Important / Important notice : Après application des instructions spécifiées dans ce SB Impératif, veuillez compléter la présente attestation et la retourner par courrier ou courriel ou fax à (cf § 7.C) : After application of the instructions specified in this Mandatory SB, please complete this certificate and mail or email or fax it to (refer to § 7.C):

For Africa, Europe, Middle East TURBOMECA-Noria (Team Tarnos) Fax : +33 (0) 5 59 74 45 72 noria-tarnos-arrius@turbomeca.fr For Australasia, Oceania, Japan TURBOMECA-Noria (Team Sydney) Fax : +61 2 9791 6708 noria-sydney@turbomeca.com.au For Asia Pacific TURBOMECA-Noria (Team Singapore) Fax: +65 6545 4978 noria.singapore@turbomeca.com.sg

For North America TURBOMECA-Noria (Team Dallas) Fax : +1 972 606 76 68 noria-dallas@turbomeca.com For South America TURBOMECA-Noria (Team Rio) Fax : +55 21 2679 2794 noria-rio@turbomeca.com.br

Information concernant le matériel / Equipment information

Utilisateur Customer N° Appareil Aircraft S/N

N/S - S/N Réf. - P/N TSN* TSO* CSN* CSO*

Moteur Engine

Groupe de lubrification modifié Modified lubricating device

* TSN = Time Since New (Heures depuis neuf) TSO = Time Since Overhaul (Heures depuis RG) CSN = Cycles Since New (Cycles depuis neuf) CSO = Cycles Since Overhaul (Cycles depuis RG)

Opération effectuée par / Work performed by:

Je certifie que le groupe de lubrification identifié ci-dessus a été modifié selon les directives de ce SB Impératif. I certify that the above-mentioned lubric ating device has been modified according to the directives given in this Mandatory SB.

Date [ JJ / MMMM / AAAA ou/or DD / MMMM / YYYY] Nom / Print name Fonction / Job title

ANNEXE 3 / APPENDIX 3 Signature:



## SB_319_79_4835_EN - A <May 22, 2013> - 13 / 13