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 A LERT

ARRIEL 1 No. A292 73 0834

Subject: Ejector assembly. Inspection for assembly compliance of the ejector.

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



## Version: B

Reason for update: Precision on the conditions of application.



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# MANDATORY SERVICE BULLETIN ALERT

1. Compliance

SB effectivity date * FEBRUARY 2011

* Date on which this Mandatory SB becomes effective and must systematically be complied with, according to the conditions of application. This date corresponds to when all resources needed to perform the procedure (parts, tools, documentation, etc.) will be available. If these resources are available any earlier, the Mandatory SB may, as an exception, be applied prior to the effectivity date.
CAUTION: FAILURE TO APPLY THIS MAND ATORY SB MAY LEAD TO THE UNCOMMANDED IN-FLIGHT SHUT-DOWN OF BOTH ENGINES IN THE SAME MISSION WHICH, ON A TWIN-ENGINE HELICOPTER, LEADS TO AN EMERGENCY AUTOROTATION LANDING. 

### A. Application Application of this Service Bulletin (SB) is considered mandatory as a result of a technical requirement which might affect flight safety. It may be done immediately or to accommodate an existing schedule.

Validity Code

ARRIEL 1E2 ARRIEL 1S - 1S1 1-A

Note 1: This Mandatory SB applies to ejector assemblies:

- for which the application of IC No. 298468 or SB No. 292 73 0826 is recorded in

the engine log book [with the serial number (SN) of the related ejector assembly (3)],

- or are engraved near the identification plate of the ejector assembly (3), but for

which the application of SB No. 292 73 0826 is not recorded in the engine log book. Note 2: This Mandatory SB does not apply to ejector assemblies:

- for which the application of SB No. 292 73 0826 version B is recorded in the

engine log book [with the SN of the related ejector assembly (3)]. Conditions of application for engines in service (1) Application at the operator's site Apply the check within the deadlines defined below, upon receiving this Mandatory SB.

Airframe configuration Deadline for the operation
SB No. 292 73 0826 or IC No. 298468: Applied to the two ejector assemblies of the same airframe AND Starting difficulties: N1 stagnation or variation found 

### * : Yes, on at least one of the two engines 5 flight hours or 3 days Whichever comes first

SB No. 292 73 0826 or IC No. 298468: Applied to only one of the two ejector assemblies of the same airframe AND Starting difficulties: N1 stagnation or variation found 

### * : Yes, on the related engine 20 flight hours or 1 month Whichever comes first

SB No. 292 73 0826 or CI 298468 : Applied to one or both ejector assemblies of the same airframe AND Starting difficulties: N1 stagnation or variation found 

### * : No 100 flight hours or 3 months Whichever comes first



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# MANDATORY SERVICE BULLETIN ALERT

* During starting, N1 rise shall be continuous and linear up to ground idle.

In case of doubt, contact your TURBOMECA Field Representative to confirm if starting behavior is correct.(2) Application at a TURBOMECA-approved Service Center or at a TURBOMECAapproved Maintenance Center Before delivery. (3) Application at a TURBOMECA-approved Repair Center Before delivery. 

### B. Purpose (Figures 1 and 2) To verify, on the fuel system, that the ejector (2) is correctly assembled in the body of the ejector assembly (3). 

### C. Description This procedure consists of performing a visual inspection for compliance of the correct position of the ejector (2) in the body of the ejector assembly (3) further to its re-assembly for the application of SB No. 292 73 0826. 

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

### E. Manpower (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center (a) Personnel: 1 mechanic. (b) Time required: 1 hour. (2) At a TURBOMECA-approved Repair Center (a) Personnel of approved Repair Center. (b) Time determined by the Repair Center as being appropriate for this level of intervention.


### F. Material Refer to paragraph 3. 

### G. Tooling (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center Standard tooling. (2) At a TURBOMECA-approved Repair Center Refer to the ARRIEL 1 Overhaul Manual. 

### H. Weight and balance Not applicable.


### I. References (1) ARRIEL 1E2 Maint enance Manual ........................................... Ref. X 292 M3 452 2. (2) ARRIEL 1S Maint enance Manual ............................................. Ref. X 292 F9 452 2. (3) ARRIEL 1S1 Maint enance Manual ........................................... Ref. X 292 H4 452 2. (4) ARRIEL 1 Overhaul Manual .................................................... Ref. X 292 87 500 2. (5) Technical Instruction (T I) ......................................................... Ref. 292 73 0826. (6) Service Bulletin ........................................................................ No. 292 73 0826.



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# MANDATORY SERVICE BULLETIN ALERT

J. Other publications concerned (1) ARRIEL 1E2 Spare Parts Catalo g............................................ Ref. X 292 M3 702 2. (2) ARRIEL 1S Spare Parts Catalog.............................................. Ref. X 292 F9 702 2. (3) ARRIEL 1S1 Spare Parts Catalog............................................ Ref. X 292 H4 702 2. (4) ARRIEL 1E2 Illustrated Parts Ca talog...................................... Ref. X 292 M3 602 2. (5) ARRIEL 1S Illustrated Parts Catalog........................................ Ref. X 292 F9 602 2. (6) ARRIEL 1S1 Illustrated Parts Catalog...................................... Ref. X 292 H4 602 2.



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# MANDATORY SERVICE BULLETIN ALERT

2. Instructions to be incorporated A. Implementation This procedure may be performed without removing the engine from the helicopter. Application of this procedure necessitates removing the ejector assembly (3) from the engine. (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center Remove, check and re-install ejector assembly (3). (2) At a TURBOMECA-approved Repair Center (a) Ejector assembly installed on engine. Remove, check and re-install ejector assembly (3). (b) Stand-alone ejector assembly. Not applicable. 

### B. Operating instructions (Figures 1 and 2) (1) Remove ejector assembly (3): refer to relevant ARRIEL 1 Maintenance Manual, task 73-19-10-900-801. (2) Remove screws (4) (x3). (3) Remove union (5) and discard preformed packing (6). (4) Check position of ejector (2) in body of ejector assembly (3) per Figure 1: (a) Make sure that position of circlip (7) is correct in its groove, which shows compliant position of ejector (2). (b) If position of ejector (2) is compliant, re-install union (5). 1 Lubricate new preformed packing (6) with engine oil. 2 Install preformed packing (6) on union (5). 3 Install union (5) on ejector assembly (3) with screws (4) (x3). 4 Torque screws (4) (x3) to standard value. (c) If position of ejector (2) is not compliant: Replace ejector assembly (3) with ejector assembly which has been checked compliant per this Mandatory SB, or apply TI No. 292 73 0826 again through application of SB No. 292 73 0826. Note 1: Application of a Technical Instruction (TI) requires specific qualification as specified in the relevant technical instruction. Note 2: Further to a non-compliant check and if SB No. 292 73 0826 is applied again, position ejector (2) per Figure 2 during re-installation. (5) Install ejector assembly (3): refer to relevant ARRIEL 1 Maintenance Manual, task 73-19-10-900-801. 

### C. Reconditioning and checks (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center Perform a ground run check: refer to relevant ARRIEL 1 Maintenance Manual, task 71-02-13-280-801. (2) At a TURBOMECA-approved Repair Center Refer to the ARRIEL 1 Overhaul Manual.



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# MANDATORY SERVICE BULLETIN ALERT

D. Identification (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center (a) Complete the following section in the current engine log book:

- Section "E": record the application of Mandatory SB No. A292 73 0834 [specify the P/N and S/N of ejector assembly (3)]. (b) Complete the following section in the unique engine log book:

- Section "A": record the application of Mandatory SB No. A292 73 0834 [specify the P/N and S/N of ejector assembly (3)]. (c) Notify TURBOMECA that Mandatory SB No. A292 73 0834 has been applied by returning the fully completed compliance certificate (Appendix of this Mandatory SB). (2) At a TURBOMECA-approved Repair Center (a) If engine is returned 1 Complete the following section in the unique engine log book:

- Section "A": record the application of Mandatory SB No. A292 73 0834 [specify the P/N and S/N of ejector assembly (3)]. 2 Notify TURBOMECA that Mandatory SB No. A292 73 0834 has been applied by returning the fully completed compliance certificate (Appendix of this Mandatory SB). (b) If stand-alone ejector assembly is returned Not applicable.


### E. Routine maintenance Not applicable.



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# MANDATORY SERVICE BULLETIN ALERT

3. Material information

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

### B. List of parts (1) Compliant check of ejector assembly

New Part Number Key Qty Description Price Old Part Number Key Qty

9 794 41 020 0 B 1 Preformed packing * 9 794 41 020 0 F 1

(2) Non-compliant check of ejector assembly and replacement of ejector assembly

New Part Number Key Qty Description Price Old Part Number Key Qty

ARRIEL 1E2 0 141 01 502 0** B 1 Ejector assembly * 0 141 01 502 0 F 1

9 794 41 020 0 B 1 Preformed packing * 9 794 41 020 0 F 1

ARRIEL 1S - 1S1 0 141 01 501 0** B 1 Ejector assembly * 0 141 01 501 0 F 1

9 794 41 020 0 B 1 Preformed packing * 9 794 41 020 0 F 1

* Prices available upon request. ** Ejector assembly checked and found compliant according to this SB

. Key A - Part incorporated by this Mandatory SB. B - Part not incorporated by this Mandatory SB, but required for its application. F - Part deleted by this Mandatory SB.



### C. Supply conditions (1) At the operator's site, at a TURBOMECA-approved Service Center or at a TURBOMECA-approved Maintenance Center Supply of parts will be managed by:
For Africa, Europe, Middle East TURBOMECA-Noria Team Tarnos DVO/T NORIA 40220 TARNOS – France Fax:+33 (0) 5 59 74 45 72 noria-tarnos-arriel1@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 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 - Brasil Fax : +55 21 2679 2794 noria-rio@turbomeca.com.br



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# MANDATORY SERVICE BULLETIN ALERT

(2) At a TURBOMECA-approved Repair Center Order supplies as needed from: your local TURBOMECA Support Center

or TURBOMECA Direction Support Ventes Opérateurs Département Commercial 40220 TARNOS France Fax No. +33 (0) 5 59 74 45 11.



## SB_A292_73_0834_EN - B <February 8, 2011> - 8 / 11

# MANDATORY SERVICE BULLETIN ALERT

Positionnement de l’éjecteur non-conforme Non-compliant position of the ejector

Positionnement de l’éjecteur conforme Compliant position of the ejector



### FIGURE 1 Circlips (7) bien positionné dans sa gorge : la gorge est bien visible entre les deux extrémités du circlips (7). Correct position of the circlip (7) in its groove: the groove is correctly visible between the two ends of the circlip (7). Circlips (7) en dehors de sa gorge : la gorge n’est pas visible entre les deux extrémités du circlips (7). Circlip (7) out of its groove: the groove is not visible between the two ends of the circlip (7).



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# MANDATORY SERVICE BULLETIN ALERT

FIGURE 2 3

2

7

Position angulaire de l’éjecteur (2) sur le corps de l’ensemble éjecteur (3) Ejector (2) angular position in the body of ejector assembly (3) 6

5

4



## SB_A292_73_0834_EN - B <February 8, 2011> - 10 / 11

# MANDATORY SERVICE BULLETIN ALERT

Objet : Attestation d’applicati on du SB Impératif n° A292 73 0834. Subject: Mandatory SB No. A292 73 0834 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 §3.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 §3.C):
For Africa, Europe, Middle East TURBOMECA-Noria (Team Tarnos) Fax:+33 (0) 5 59 74 45 72 noria-tarnos-arriel1@turbomeca.fr For Australasia TURBOMECA-Noria (Team Sydney) Fax: +61 2 9791 6708 noria-sydney@turbomeca.com.au

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

Ensemble éjecteur Ejector assembly

* 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)

Résultats du contrôle de positionnement de l’éjecteur (2) dans le corps de l’ensemble éjecteur (3) (cocher la case correspondante) Inspection result of ejector (2) positioning in the body of ejector assembly (3) (tick the corresponding box)

Conforme / Compliant Non conforme / Not compliant

Opération effectuée par : Work performed by:

Je certifie que l’ensemble éjecteur identifié ci-dessus a été contrôlé selon les directives de ce SB Impératif. I certify that the above-mentioned ejector assembly has been checked according to the directives given in this Mandatory SB.

Date Nom / Print name Fonction / Job title

Signature :



### ANNEXE / APPENDIX



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