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 

ALERT

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.

SB_A292_73_0834_EN - B <February 8, 2011> - 1 / 11
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 MANDATORY 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

SB_A292_73_0834_EN - B <February 8, 2011> - 2 / 11
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 Maintenance Manual........................................... Ref. X 292 M3 452 2. 

(2) ARRIEL 1S Maintenance Manual............................................. Ref. X 292 F9 452 2. 

(3) ARRIEL 1S1 Maintenance Manual........................................... Ref. X 292 H4 452 2. 

(4) ARRIEL 1 Overhaul Manual .................................................... Ref. X 292 87 500 2. 

(5) Technical Instruction (TI) ......................................................... Ref. 292 73 0826. 

(6) Service Bulletin ........................................................................ No. 292 73 0826. 

SB_A292_73_0834_EN - B <February 8, 2011> - 3 / 11
MANDATORY SERVICE BULLETIN 

ALERT

J. Other publications concerned 

(1) ARRIEL 1E2 Spare Parts Catalog............................................ 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 Catalog...................................... 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. 

SB_A292_73_0834_EN - B <February 8, 2011> - 4 / 11
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. 

SB_A292_73_0834_EN - B <February 8, 2011> - 5 / 11
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. 

SB_A292_73_0834_EN - B <February 8, 2011> - 6 / 11
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

SB_A292_73_0834_EN - B <February 8, 2011> - 7 / 11
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).

SB_A292_73_0834_EN - B <February 8, 2011> - 9 / 11
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’application 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 

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