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EMERGENCY

ALERT SERVICE BULLETIN

SUBJECT: INTERVALS - INSPECTIONS - Cooling System

Periodic visual checks of the engine / MGB oil fan hopper 

ATA: 79

HELICOPTER(S)

CONCERNED NUMBER Version(s)

Civil Military

EC130 05A020 T2

Revision No. Date of issue

Revision 0 2014-10-20

Summary:

Carrying out of periodic visual checks for cracks of the engine / MGB oil fan hopper.

Compliance:

Airbus Helicopters renders compliance with this ALERT SERVICE BULLETIN mandatory.

For the attention of
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1. PLANNING INFORMATION

1.A. EFFECTIVITY

1.A1. Helicopters/installed equipment

EC130 T2 helicopters.

1.A.2. Non-installed equipment

Not applicable.

1.B. ASSOCIATED REQUIREMENTS

Not applicable.

1.C. REASON

Airbus Helicopters has been informed of several cases of cracks at the attachment points of the fan to the 

hopper. (See examples of cracks, Figure 2).

Cracks can lead to the total failure of the fan attachment. 

The fan can then interfere with the control rod of the front servocontrol or the flight control bellcrank and thus 

cause jamming.

As a consequence, and pending a modification, Airbus Helicopters renders the carrying out of a periodic

visual check of the hopper mandatory.

1.D. DESCRIPTION

This ALERT SERVICE BULLETIN requires the carrying out of a periodic visual check for cracks at the 

attachment points of the engine / MGB oil fan to the hopper.
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1.E. COMPLIANCE

1.E1. Compliance at the works

Not applicable.

1.E.2. Compliance in service

The works must be performed on the helicopter by the operator.

Helicopters/installed equipment:

- Comply with paragraph 3.: 

. at the next "P" inspection (10 flight hours // 7 days), 

then, 

. at each "P" inspection.

Non-installed equipment:

Not applicable.

1.F. APPROVAL

Approval of modifications:

Not applicable.

Approval of this document:

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

on October 20, 2014 under the authority of EASA Design Organization Approval No. 21J.056 for helicopters 

of civil versions subject to an Airworthiness Certificate. 

1.G. MANPOWER

For compliance with this ALERT SERVICE BULLETIN, Airbus Helicopters recommends the following 

personnel qualification: 

Qualification: 1 technician or 1 pilot having appropriate training and accreditation in compliance with the local 

regulation in force (for the performance of checks).

1 technician (for the hopper replacement)

Time for the operations is indicated for reference, for a standard configuration.

Time for the operation: Approximately 5 minutes for checking.

Approximately 6 hours for replacing.
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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:

AMM: 60-00-00, 3-1: General Instructions - Mechanical

AMM: 79-21-00, 4-3: Removal-Installation - Engine / MGB oil fan

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

For any information concerning the kits and/or components, contact the Airbus Helicopters network 

Customer Support Sales Department.

The delivery lead time shall be communicated by the Customer Support Sales Department when requested 

by the operator. 

Order as required (unless otherwise specified)

from

Airbus Helicopters

Etablissement de Marignane

Direction Ventes et Relations Client (ECR)

13725 MARIGNANE CEDEX

FRANCE

NOTE 1

On the purchase order, please specify the mode of 

transport, the destination and the serial numbers of the 

aircraft to be modified.

NOTE 2

For ALERT SERVICE BULLETINS, order by:

Telex: HELICOP 410 969F

Fax: +33 (0)4.42.85.99.96.

2.B. INFORMATION CONCERNING INDUSTRIAL SUPPORT

Not applicable.
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2.C. MATERIAL REQUIRED FOR EACH HELICOPTER/COMPONENT

Kits or components to be ordered for one helicopter or one assembly:

Key Word Qty New P/N Item Former 

 P/N → Instruction

Fan hopper A/R 350A53413700 1 350A53413700

Discard in case 

of cracks. Fan hopper A/R 350A53413701 2 350A53413701

Fan hopper A/R 350A53415400 3 350A53415400

Products to be ordered separately:

As per the Tasks indicated in this ALERT SERVICE BULLETIN.

The products can be ordered separately, from INTERTURBINE AVIATION LOGISTICS.

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

Read and comply with the mechanical general instructions, subject of AMM, Task 60-00-00, 3-1.

3.B. OPERATIONAL PROCEDURE

3.B.1. Preliminary steps

- Install access equipment.

3.B.2. Procedure (Figures 1 to 3)

- Check for cracks the hopper (a) (Figure 1) especially at the attachments of the fan (b): 

NOTE 1

Using a mirror and/or light source can ease the operation.

. For the upper part of the hopper: 

- With the LH and RH MGB cowlings closed, check the hopper through the space between the MGB 

and the upper MGB cowlings.

. For the lower part of the hopper: 

- Open the LH and RH MGB cowlings.

- Analysis of results: 

. When no cracks are found: 

- Leave as is.

. When cracks are found (see examples, Figure 2):

- Replace the hopper (a) (Figure 1) with hopper (1), (2) or (3) as per AMM Task 79-21-00, 4-3.

or,

- If the hopper (a) cannot be replaced immediately, the performance of a ferry flight (flight without 

passenger transport) is authorized after removal of the fan (b):

. If necessary, open the LH and RH MGB cowlings.

. Open the "CTL FAN" circuit-breaker on circuit-breaker panel "31ALP32", located in the RH 

compartment of the cargo hold.

. Remove the clamps securing the fan electrical harness and the clamp securing the electrical 

connector (g) (Figure 3).

. Disconnect the electrical connector (g) of the fan, and remove the shielding continuity (h) from 

the structure.

. Remove and retain the screws (c) (Figure 1), washers (d) and spacers (e).

. Remove the bonding braid (f) from the fan.

. Remove and retain the fan (b).
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. If possible: 

- Install the bonding braid (f) on the hopper (a), using a spacer (e), washer (d) and screw (c).

NOTE 2

When installing the spacer, the face with the largest 

diameter must be positioned on the hopper side.

or 

- coil the bonding braid (f) to prevent any interference with its environment.

. If possible, attach the pipe (g) to the hopper, with a spacer (e), washer (d) and screw (c). 

NOTE 3

When installing the spacer, the face with the largest 

diameter must be positioned on the hopper side.

NOTE 4

When the fan is removed:

- the air conditioning system no longer operates. The orange 

"CO" light on the ECS control unit comes on.

- the engine / MGB oil cooling system no longer operates. 

Refer to the Flight Manual (FLM) procedures for operation 

of the engine / MGB oil cooling system. 

- the heating and demisting functions are available.

. Install the screws (i) securing the electrical harness to the hopper (a).

. Close the LH and RH MGB cowlings.

3.B.3. Final steps

- Remove the access equipment.

3.C. IDENTIFICATION

Identification of this document:

Record the first embodiment of this document with its revision number in the aircraft documents

3.D. OPERATING AND MAINTENANCE INSTRUCTIONS

Not applicable.
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Figure 1

a

1 or 2 or 3

c

d

e

b

c

d

e

f

g

i
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Figure 2

b

a

a

b
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Figure 3

h

g