# ASB No. EC225-56A002

Revision 0 2012-08-08 Page 1/8

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

### Civil version(s): LP



# ALERT SERVICE BULLETIN

SUBJECT : WINDOWS - Jettisonable windows

Check of jettisonable emergency exit window panels

Revision No. Date of issue

Revision 0 2012-08-08



### Summary :

Make sure that there is no sealant at the extruded se ctions of jettisonable emergency exit window panels.



### Compliance :

EUROCOPTER renders compliance with th is ALERT SERVICE BULLETIN mandatory. For the attention of

# ASB No. EC225-56A002

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### 1. PLANNING INFORMATION

1.A. EFFECTIVITY

1.A1. Helicopters/installed equipment

Helicopters delivered before July 20, 2012 and on whic h the window jettison test has never been performed.



### NOTE

The window jettison test must be performed every 2 years

(in accordance with the Maintenance Program (PRE)).

1.A.2. Non-installed equipment

Not applicable.



### 1.B. ASSOCIATED REQUIREMENTS

Not applicable.



### 1.C. REASON

When performing jettison tests (operation to be performed every 2 years in accordance with the Maintenance

Program (PRE)), the technician encountered difficulties in jettisoning the window panel. The investigations

have shown on several windows that there was sealant between the extrusion and the window.

Sealant between the extrusion and the window can make it impossible to jettison the window panel when the

need arises and can slow down the evacuation of passengers.

Consequently, EUROCOPTER makes the check of je ttisonable emergency exit windows mandatory.



### 1.D. DESCRIPTION

Compliance with this ALERT SERVICE BULLETIN consis ts in checking on each jettisonable window panel of

the emergency exits that there is no se alant between the extrusion and the window.

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### 1.E. COMPLIANCE

1.E1. Compliance at the works

Not applicable.

1.E.2. Compliance in service

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

Helicopters/installed equipment :

Comply with paragraph 3. of this ALERT SERVICE BU LLETIN within 110 flying hours or 6 months, (the first

limit reached is applicable), following receipt of this ALERT SERVICE BULLETIN Revision 0, issued on the

date indicated at the bottom of the page.

Non-installed equipment :

Not applicable.



### 1.F. APPROVAL

Approval of modifications :

Not applicable.

Approval of this document :

The technical information contained in this AL ERT SERVICE BULLETIN Revision 0 was approved

on August 08, 2012 under the authority of EASA Design Organiza tion Approval No. 21J.056 for helicopters

of civil versions subject to an Airworthiness Certificate.

The technical information contained in th is ALERT SERVICE BULLETIN Revision 0 was approved

on August 08, 2012 under the prerogatives of the recognition of design ca pability FRA21J-002-DGA for

French Government helicopters.



### 1.G. MANPOWER

EUROCOPTER recommends that compliance with this ALERT SERVICE BULL ETIN is ensured by

personnel with the following qualifications:

Qualification: 1 Mechanical Engineering Technician (2 Mechanical Engineering Technicians if the window is

to be removed).

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

Time for the operations: approximately 5 minutes for 1 Mechanical Engineering Technician for the check of

one window,

approximately 1 hour for 2 Mechanic al Engineering Technicians for the

Removal/Installation of one window.

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### 1.H. WEIGHT AND BALANCE

Not applicable.



### 1.I. EFFECT ON ELECTRICAL LOADS

Not applicable.



### 1.J. SOFTWARE MODIFICATION EMBODIMENT RECORD

Not applicable.



### 1.K. REFERENCES

The following documents are required for compliance with this ALERT SERVICE BULLETIN:

MMA: 56-20-00-051: Cabin windows - Removal - Installation

MTC: 20.04.01.102: Cleaning - Use of cleaning products on individual parts and on aircraft



### 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

Not applicable.



### 2.B. INFORMATION CONCERNING INDUSTRIAL SUPPORT

Not applicable.



### 2.C. MATERIAL REQUIRED FOR EACH HELICOPTER/COMPONENT

Products to be ordered separately :

Refer to the Tasks and Work Cards refer enced in this ALERT SERVICE BULLETIN.

The products can be ordered separately from t he INTERTURBINE AVIATION LOGISTICS company.

Website: http://www.interturbine.com

Telephone: +49.41.91.809.300

AOG: +49.41.91.809.444



### 2.D. MATERIAL TO BE RETURNED

Not applicable.

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### 3. ACCOMPLISHMENT INSTRUCTIONS

3.A. GENERAL

Not applicable.



### 3.B. OPERATIONAL PROCEDURE

For each jettisonable window:

- Lift the extrusion slightly using a flat tool (that does not cause scoring).

- Make sure that there is no sealant ( on the inside and outside of the window):

. between the window and the extrusion,

. between the extrusion and the structure.



### NOTE 1

Presence of a sealant bead on the extrusion parting lines, on

the window panel pull-out seal parting lines and on the

pull-out straps is normal (See Figure 1 below).

Figure 1

- Interpretation of the results:

. If there is no sealant seal: (Photo 1, Figure 2):

- leave as is.

. If there is sealant or if in doubt: (Photo 2, Figure 2):

- Remove the window as per MMA Task 56-20-00-051.



### NOTE 2

If sealant is found between the st ructure and the profile, it is

necessary to remove the extrusion.

# ASB No. EC225-56A002

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This document is available on the internet : www.eurocopter.com/techpub - Clean the extrusion and if necessary the wi ndow and/or structure as per MTC Work

Card 20.04.01.102.

- Make sure that the extrusion shows no damage:

. if the extrusion shows no damage:

- install the window with the extrusion remov ed previously as per MMA Task 56-20-00-051.

. if the extrusion of the window shows damage:

- discard the extrusion,

- install the window as per MMA Task 56-20-00-051.



### 3.C. IDENTIFICATION

Identification of this document :

Record compliance with this document and t he revision number in the helicopter documents



### 3.D. OPERATING AND MAINTENANCE INSTRUCTIONS

Not applicable.

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### Photo 1

Photo 2

Figure 2 Presence of

sealant