ALERT SERVICE BULLETIN AS350 

Approved under EASA DOA No. 21J.056. 25.01.02 Page 1/7

 2008.09.24

 

This document is available on the internet: www.eurocopter.com/techpub 

 EUROCOPTER

DIRECTION TECHNIQUE SUPPORT

13725 MARIGNANE CEDEX FRANCE CIVIL VERSION(S): BA 

 

 ALERT SERVICE BULLETIN 

No. 25.01.02 

SUBJECT: EQUIPMENT AND FURNISHINGS

1900 kg and 1950 kg Emergency Flotation Gear

REVISION No. DATE OF APPROVAL DATE OF ISSUE 

 

Revision 0 On: September 22, 2008 2008.09.24 

 

 
 ALERT SERVICE BULLETIN AS350 

Approved under EASA DOA No. 21J.056. 25.01.02 Page 2/7

 2008.09.24

 

1. PLANNING INFORMATION 

1.A. EFFECTIVITY 

1.A.1. Helicopters/Installed equipment 

Helicopters fitted with emergency flotation gear including the assemblies listed below and not having been 

granted an operating time limit extension from the equipment manufacturer AERAZUR: 

- LH container assembly P/N 158170 or P/N 158210-1, 

and, 

- RH container assembly P/N 158171 or P/N 158215-1. 

NOTE 1

Container assemblies granted an operating time limit extension 

by the equipment manufacturer, must systematically be 

scrapped at the end of this extension. 

1.A.2. Non-installed equipment 

Emergency flotation gear including the assemblies listed below and not having been granted an operating 

time limit extension from the equipment manufacturer AERAZUR: 

- LH container assembly P/N 158170 or P/N 158210-1, 

and, 

- RH container assembly P/N 158171 or P/N 158215-1. 

NOTE 2

Container assemblies granted an operating time limit extension 

by the equipment manufacturer must systematically be 

scrapped at the end of this extension. 

1.B. ASSOCIATED REQUIREMENTS 

Not applicable. 

1.C. PURPOSE 

To replace the emergency flotation gear container assemblies having reached their operating time limit. 

This ALERT SERVICE BULLETIN will be covered in an EASA Airworthiness Directive. 
 ALERT SERVICE BULLETIN AS350 

Approved under EASA DOA No. 21J.056. 25.01.02 Page 3/7

 2008.09.24

 

1.D. DESCRIPTION 

The emergency flotation gear container assemblies listed in paragraph 1.A. of this ALERT SERVICE 

BULLETIN have a fixed operating time limit of 10 years from the date of manufacture. As of June 2006, this 

limit is no longer recorded in the Maintenance Program (PRE): it is therefore possible that container 

assemblies that have reached the 10-year limit since this date have not been replaced. 

The PRE does however require a complete inspection of the container assemblies at regular intervals. 

Despite this inspection, the floatability of a helicopter may prove to be insufficient in the event of ditching if an 

emergency flotation gear is operated beyond its operating time limit. 

 

As a result, EUROCOPTER hereby informs you that you must replace the container assemblies at the time 

limits specified in paragraph 1.E. of this ALERT SERVICE BULLETIN based on their date of manufacture. 

1.E. COMPLIANCE 

EUROCOPTER hereby declares that compliance with this ALERT SERVICE BULLETIN is mandatory. 

1.E.1. Compliance at the works 

Not applicable.

1.E.2. Compliance in operation: By the operator 

1.E.2.a. On helicopters/installed equipment 

On receipt of this ALERT SERVICE BULLETIN issued on the date indicated at the bottom of the page: 

If the container assemblies were manufactured 12 years ago or more: 

- Replace the container assemblies at the latest within the month following receipt of this ALERT 

SERVICE BULLETIN, issued on the date indicated at the bottom of the page. To obtain a possible 

extension to the operating time limit, return the container assemblies to the equipment manufacturer for 

examination before approval. 

If the container assemblies were manufactured between 10 and 12 years ago: 

- Replace the container assemblies within 2 months following receipt of this ALERT SERVICE BULLETIN, 

issued on the date indicated at the bottom of the page, without exceeding 12 years and 1 month since 

the date of manufacture (the first limit reached is applicable). To obtain a possible extension to the 

operating time limit, return the container assemblies to the equipment manufacturer for examination 

before approval. 

If the container assemblies were manufactured between 9 and 10 years ago: 

- Replace the container assemblies at the next inspection of the emergency flotation gear and at the latest 

when they reach 10 years and 2 months since the date of manufacture (the first limit reached is 

applicable). To obtain a possible extension to the operating time limit of the container assemblies, return 

them to the equipment manufacturer for examination before approval. 

If the container assemblies were manufactured less than 9 years ago: 

- Replace the container assemblies at the latest when they reach 10 years since the date of manufacture. 

To obtain a possible extension to the operating time limit of the container assemblies, return them to the 

equipment manufacturer for examination before approval. 
 ALERT SERVICE BULLETIN AS350 

Approved under EASA DOA No. 21J.056. 25.01.02 Page 4/7

 2008.09.24

 

1.E.2.b. On non-installed equipment 

On receipt of this ALERT SERVICE BULLETIN issued on the date indicated at the bottom of the page: 

If the container assemblies were manufactured 10 years ago or more: 

- Before installation on a helicopter and at the latest 1 year from receipt of this ALERT SERVICE 

BULLETIN, issued on the date indicated at the bottom of the page, return the container assemblies to the 

equipment manufacturer for examination, in order to obtain a possible extension to their operating time 

limit. 

If the container assemblies were manufactured less than 10 years ago: 

- At the latest when the container assemblies reach 10 years, return them to the equipment manufacturer 

for examination in order to obtain a possible extension to their operating time limit. 

1.F. APPROVAL 

Approval is limited to civil version helicopters subject to an Airworthiness Certificate. 

The technical information provided in this ALERT SERVICE BULLETIN was approved 

on September 22, 2008 under the authority of EASA Design Organisation Approval No. 21J.056. 

1.G. MANPOWER 

Not applicable. 

1.H. WEIGHT AND BALANCE 

Not applicable. 

1.I. EFFECT ON ELECTRICAL LOADS 

Not applicable. 

1.J. SOFTWARE MODIFICATION EMBODIMENT STATE 

Not applicable. 

1.K. REFERENCES 

Not applicable. 
 ALERT SERVICE BULLETIN AS350 

Approved under EASA DOA No. 21J.056. 25.01.02 Page 5/7

 2008.09.24

 

1.L. OTHER DOCUMENTS AFFECTED 

EUROCOPTER will modify the Maintenance Program (PRE) in accordance with this ALERT SERVICE 

BULLETIN. 

This document will be issued subsequently. 

1.M. TOOLING AFFECTED 

Not applicable. 

1.N. INTERCHANGEABILITY AND MIXABILITY OF PARTS 

Not applicable. 
 ALERT SERVICE BULLETIN AS350 

Approved under EASA DOA No. 21J.056. 25.01.02 Page 6/7

 2008.09.24

 

2. ACCOMPLISHMENT INSTRUCTIONS 

2.A. GENERAL 

Not applicable. 

2.B. OPERATIONAL PROCEDURE 

Not applicable. 

2.C. IDENTIFICATION 

Record compliance with this ALERT SERVICE BULLETIN on the Log Card of the equipment. 

2.D. OPERATING AND MAINTENANCE INSTRUCTIONS 

Not applicable. 
 ALERT SERVICE BULLETIN AS350 

Approved under EASA DOA No. 21J.056. 25.01.02 Page 7/7

 2008.09.24

 

3. MATERIAL INFORMATION

3.A. MATERIAL: COST - AVAILABILITY 

For all information concerning the kits and/or components, contact the EUROCOPTER Network Sales and 

Customer Relations Department. 

3.B. INFORMATION CONCERNING INDUSTRIAL SUPPORT 

Not applicable. 

3.C. MATERIAL REQUIRED FOR EACH HELICOPTER/ENGINE/COMPONENT 

3.C.1. Kit(s) or component(s) to be ordered for one helicopter or one assembly 

Material 

Part Number Qty Item Key Word Former 

Part Number Instructions 

 

158170 1 Container assembly, LH 158170 As necessary 

158171 1 Container assembly, RH 158171 As necessary 

 

158210-1 1 Container assembly, LH 158210-1 As necessary 

158215-1 1 Container assembly, RH 158215-1 As necessary 

3.C.2. Items to be ordered separately 

Not applicable. 

3.D. PROCUREMENT CONDITIONS

Order the required quantity (unless otherwise specified) 

from 

AERAZUR 

2 Rue Maurice Mallet 

92130 ISSY LES MOULINEAUX 

FRANCE 

NOTE 

On the purchase order, please specify the mode of transport, 

the destination and the serial numbers of the helicopters to be 

modified. 

4. APPENDIX 

Not applicable.