# ASB No. EC155-25A114

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### Civil version(s): B, B1



# ALERT SERVICE BULLETIN

SUBJECT: EQUIPMENT AND FURNISHINGS - Pilot and co-p ilot seats

Inspection of the rear beam of the seat

Revision No. Date of issue

Revision 0 2012-05-14

Revision 1 2012-08-09



### Summary:

The purpose of this ALERT SERVICE BULLETIN is to ch eck that there are weld beads on the rear beam of t he

pilot and co-pilot seats.



### Reason for last Revision:

The purpose of the last revision is to replace in t he appendix EADS SOGERMA Inspection Service Bulleti n

No. 2510106-25-888 Revision 0 with EADS SOGERMA Ins pection Service Bulletin No. 2510106-25-888

Revision 1, which requires an additional check of a ll welds of the rear beam of the seats.



### Compliance:

Compliance with this ALERT SERVICE BULLETIN is mand atory. For the attention of

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### 1. PLANNING INFORMATION

1.A. EFFECTIVITY

1.A.1. Helicopters/installed equipment

On helicopters equipped with pilot and co-pilot sea ts part number (MP/N) 2510106-03-00

or 2510106-06-00 with serial number (S/N) between 7 20 (inclusive) and 1451 (inclusive) and on which

compliance with EADS SOGERMA Inspection Service Bul letin No. 2510106-25-888 Revision 1 has not been

ensured.

1.A.2. Non-installed equipment

On pilot and co-pilot seats part number (MP/N) 2510 106-03-00 or 2510106-06-00 with S/N between

720 (inclusive) and 1451 (inclusive) and on which c ompliance with EADS SOGERMA Inspection Service

Bulletin No. 2510106-25-888 Revision 1 has not been ensured.



### 1.B. ASSOCIATED REQUIREMENTS

Not applicable.



### 1.C. REASON

Revision 0:

During a maintenance inspection, it was found that a weld bead was missing on the rear beam of a seat.

This non-conformity, if not detected and corrected, could lead to crew injury in case of helicopter ha rd

landing.

EADS SOGERMA requires that the pilot and co-pilot s eats be inspected to make sure that there is a weld

bead on the rear beam of the seat.

This inspection is necessary to make sure that the seats are serviceable and comply with the flight sa fety

rules.

Consequently, EUROCOPTER renders compliance with EA DS SOGERMA Inspection Service Bulletin

No. 2510106-25-888 mandatory, through this ALERT SE RVICE BULLETIN Revision 0.

This ALERT SERVICE BULLETIN Revision 0 will form th e subject of an EASA Airworthiness Directive.

Revision 1:

During compliance with Revision 0 of this ALERT SER VICE BULLETIN, it was found that a weld bead was

missing on another part of the rear beam.

This non-conformity, if not detected and corrected, could lead to flight crew injury in case of helico pter hard

landing.

The purpose of the last revision is to replace in t he appendix EADS SOGERMA Inspection Service Bulleti n

No. 2510106-25-888 Revision 0 with EADS SOGERMA Ins pection Service Bulletin No. 2510106-25-888

Revision 1, which requires an additional check of a ll welds of the rear beam of the seats.

The purpose of Revision 1 of EADS SOGERMA Inspectio n Service Bulletin No. 2510106-25-888 is to add

information to the operating procedure and to add p hotos showing new areas to be checked.

Revision 1 affects compliance with Revision 0 of th is ALERT SERVICE BULLETIN.

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### 1.D. DESCRIPTION

Compliance with this ALERT SERVICE BULLETIN Revisio n 1 consists in extending the check for the weld

bead to the whole of the rear beam of the seat in a ccordance with EADS SOGERMA Inspection Service

Bulletin No. 2510106-25-888 Revision 1.



### 1.E. COMPLIANCE

1.E.1. Compliance at the works

Helicopters/installed equipment:

Comply with paragraph 3. of this ALERT SERVICE BULL ETIN before delivery.

Non-installed equipment:

Comply with paragraph 3.B. before delivery.

1.E.2. Compliance in service

The work on the helicopter is to be performed by th e operator.

Helicopters/installed equipment:

- Comply with paragraph 3. of this ALERT SERVICE BU LLETIN within 50 flying hours or 3 months

, the first

limit reached is applicable, following receipt of t his ALERT SERVICE BULLETIN Revision 1, issued on th e

date indicated at the bottom of the page.

- If a weld bead is missing, according to the locat ion, replace the beam or the seat within 50 flying hours or 3

months, the first limit reached is applicable, foll owing receipt of this ALERT SERVICE BULLETIN

Revision 1, issued on the date indicated at the bot tom of the page.



### NOTE

In order to have sufficient time to replace a seat if

necessary, before reaching 50 flying hours or 3 mon ths,

EUROCOPTER recommends that you perform the check at

the first opportunity, in order to inform SOGERMA a s quickly

as possible of any non-compliance of the seat, if a ny.

Non-installed equipment:

Comply with paragraph 3.B. before installation on t he helicopter

, without exceeding 3 months following

receipt of this ALERT SERVICE BULLETIN Revision 1, issued on the date indicated at the bottom of the

page.

If the weld bead is missing, the installation of th is seat is prohibited.

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### 1.F. APPROVAL

Approval of modifications:

Not applicable.

Approval of this document:

The technical information contained in this ALERT S ERVICE BULLETIN Revision 0 was approved

on May 11, 2012 under the authority of EASA Design Organization Approval No. 21J.056 for helicopters o f

civil versions subject to an Airworthiness Certific ate.

The technical information contained in this ALERT S ERVICE BULLETIN Revision 1 was approved

on August 09, 2012 under the authority of EASA Desi gn Organization Approval No. 21J.056 for helicopter s of civil versions subject to an Airworthiness Certi ficate.



### 1.G. MANPOWER

EUROCOPTER recommends that compliance with this ALE RT SERVICE BULLETIN is ensured by

personnel qualified as follows:

Qualification: - 1 Mechanical Engineering Technicia n.

The time for the operations is given for informatio n purposes, for a standard configuration.

Time for the operations: Approximately 10 minutes t o perform the check in accordance with paragraph 1. G.

of the appended EADS SOGERMA Inspection Service Bul letin

No. 2510106-25-888 Revision 1.

Approximately 1 hour to replace a seat.



### 1.H. WEIGHT AND BALANCE

Not applicable.

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### 1.I. EFFECT ON ELECTRICAL LOADS

Not applicable.



### 1.J. SOFTWARE MODIFICATION EMBODIMENT RECORD

Not applicable.



### 1.K. REFERENCES

Refer to paragraph 1.J. of the appended EADS SOGERM A Inspection Service Bulletin No. 2510106-25-888

Revision 1.



### 1.L. DOCUMENTS AFFECTED

Not applicable.



### 1.M. INTERCHANGEABILITY OR MIXABILITY OF PARTS

Not applicable.

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### 2. MATERIAL INFORMATION

2.A. MATERIAL: PRICE - AVAILABILITY - PROCUREMENT

Refer to paragraph 2.A. of the appended EADS SOGERM A Inspection Service Bulletin No. 2510106-25-888

Revision 1.



### 2.B. INFORMATION CONCERNING INDUSTRIAL SUPPORT

Not applicable.



### 2.C. MATERIAL REQUIRED FOR EACH HELICOPTER/COMPONEN T

Refer to paragraph 2.C. of the appended EADS SOGERM A Inspection Service Bulletin No. 2510106-25-888

Revision 1.



### 2.D. MATERIAL TO BE RETURNED

Return the material to the following address:

EADS SOGERMA

Z.I. de l’arsenal

BP.60109

17303 ROCHEFORT CEDEX

France

Tel: +33 (0)5.46.82.84.84

Fax: +33 (0)5.46.82.88.13

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### 3. ACCOMPLISHMENT INSTRUCTIONS

3.A. GENERAL

Not applicable.



### 3.B. OPERATIONAL PROCEDURE

Comply with paragraph 3. of the appended EADS SOGER MA Inspection Service Bulletin

No. 2510106-25-888 Revision 1.



### 3.C. IDENTIFICATION

Identification of this document:

Record compliance with this ALERT SERVICE BULLETIN Revision 1 in the helicopter documents.

Identification of modifications on the equipment:

- If ALERT SERVICE BULLETIN Revision 0 was already applied, add “REV 1” at the end of

“ISB 2510106-25-888 applied”.

- If ALERT SERVICE BULLETIN Revision 0 was not appl ied, comply with paragraph C. IDENTIFICATION of

appended EADS SOGERMA Inspection Service Bulletin N o. 2510106-25-888 Revision 1.



### 3.D. OPERATING AND MAINTENANCE INSTRUCTIONS

Not applicable.



### 4. APPENDIX

Appended EADS SOGERMA Inspection Service Bulletin N o. 2510106-25-888 Revision 1 in English.

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