euraccipter

an EADS Company

EUROCOPTER

DIRECTION TECHNIQUE SUPPORT

13725 MARIGNANE CEDEX FRANCE

ALERT SERVICE BULLETIN EC 120

VERSION (S): B

ALERT SERVICE BULLETIN

SUBJECT: ROTOR FLIGHT CONTROL:

Yaw Control Protection.

No. 67A005

LIST OF APPROVED REVISION No. 0

REVISIONS APPROVED

Not applicable Date: July 30, 2001

Approved under DGAC DOA No. F.JA01 67A005 Page 1/7

2001.08.01
1. Planning Information

1.A. Effectivity

- Helicopter version(s). B (below serial No. 1279).

- Component(s) affected: Cabin floor.

- Spare parts: None.

1.B. Associated Requirements

None.

1.C. Reason

To prevent any object from sliding between the canopy and the cabin floor.

This ALERT SERVICE BULLETIN:

- is issued further to INFORMATION TELEX Sequence No. 00000007,

- forms the subject of the 7th Airworthiness Directive for EC 120 helicopters.

1.D. Description

eurocopter

an EADS Company

Installation of a front protection and a side protection on the cabin floor.

I.E. Compliance

EUROCOPTER renders compliance with this ALERT SERVICE BULLETIN mandatory.

At the works: From S/N 1279 onwards.

Retrofit action. By the operator At the latest by December 31, 2001.

Spares. Not applicable.

ALERT SERVICE BULLETIN EC 120

Approved under DGAC DOA No. F.JA01 67A005 Page 2/7

2001.08.01
1.F. Approval

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

The information or instructions relate to Aircraft Modification Approval Form (FAM) No. A00486

which was approved on July 4, 2001 by the DGAC.

The technical information contained in this ALERT SERVICE BULLETIN was approved

on July 30, 2001 under the authority of DGAC Design Organisation Approval No F.JA01.

1.G. Manpower

Qualification: 1 fitter.

Temps: approximately 2 hours

1.H. Weight and Balance

Weight: + 0.18 kg

Moment: + 0.23 m.kg

1.I. Effect on Electrical Loads

None

1.J. Software Modification Embodiment State

None.

tK. References

eurocopter

an EADS Company

Refer to: AIRCRAFT MAINTENANCE MANUAL (AMM): 21-10-00, 3-8

1.L. Other Documents Concerned

None.

1.M. Interchangeability and Mixability of Parts

Notaffected.

ALERT SERVICE BULLETIN EC 120

Approved under DGAC DOA No. F.JA01 67A005 Page 3/7

2001.08.01
eurocopter

an EADS Company

2. Accomplishment Instructions

2.A. General

Not applicable.

2.B. Operational Procedure

2.B 1. Preliminary Steps:

- Remove the wall-to-wall carpet from the cabin floor, if necesssary.

- Before performing any work, protect the canopy glass pane to preclude any risk of scratching it.

2 B.2. Installation of Side (1) and Front (2) Protections:

2.B 3. Check

ALERT SERVICE BULLET1N EC 120

Figure 1,

- Prior to fitting the self-gripping tapes of protections (1) and (2), clean the surfaces in question

as per Aircraft Maintenance Manual (AMM) 21-10-00, 3-8.

- Offer up side protection (1) complete with its self-gripping tape in accordance with the position as shown

on Figure 1 and by ensuring a clearance of 2 to 7 mm between side protection (1) and the canopy.

- Mark the location of the self-gripping tape of side protection (1)

- Bond the self-gripping tape of side protection (1).

- Offer up front protection (2) complete with its self-gripping tape in accordance with the position and

dimension as shown on Figure 1 and by ensuring a clearance of 2 to 7 mm between front protection (2) and

the canopy.

- Mark the location of the self-gripping tape of front protection (2).

- Bond the self-gripping tape of front protection (2).

- Fasten protections (1) and (2) to the self-gripping tapes

- Check that the clearance between the canopy and protections (1) and (2) is 2 to 7 mm.

- Check the good holding strength of protections (1) and (2).

2 B.4 Final Steps:

- Install the cabin wall-to-wall carpet if it has been removed.

2.C. Identification

Record compliance with this ALERT SERVICE BULLETIN in the aircraft documents.

2.D. Operating and Maintenance Instructions

Operation• None

Maintenance: None.

Approved under DGAC DOA No. F.JA01 67A005 Page 4/7

2001.08.01
3. Material Information

None.

3.A. Material. Cost. Availability

For all information, contact the Customer Support Department.

3.B. Information Concerning Industrial Support

Néant.

eurocopter

an EADS Company

3.C. Material Required For Each Aircraft, Engine/Components

Item New Key Word Qty Former Instructions

P/N P/N Disposition

And Item

1 C252A3601101 SIDE PROTECTION 1

2 C252A3602101 FRONT PROTECTION 1

3.1). Material Required For Each Spare Part

Not applicable.

3.E. Re-Identified Parts

None

3.F. Tooling. Cost. Availability

None

ALERT SERVICE BULLETIN EC 120

Approved under DGAC DOA No. F.JA01 67A005 Page 5/7

2001.08.01
3.G. Procurement Conditions

Order the required quantity:

X... side protection(s) P/N C252A3601101 and X... front protection(s) P/N C252A3602101 as per

paragraph 3.C. of this ALERT SERVICE BULLETIN

from

4. Appendix

None.

eurocopter

an EADS Company

EUROCOPTER

Etablissement de Marignane

Direction MAINTENANCE SUPPORT

SMR

13725 MARIGNANE CEDEX (FRANCE)

For ALERT SERVICE BULLET1NS, order by.

Telex: HEL1COP 410 969F

Fax. +33 (0)4 42 85 99 96

NOTE 1:

NOTE 2 - IMPORTANT:

ALERT SERVICE BULLETIN EC 120

On the purchase order, please specify the mode of transport, the destination and the serial number of the

aircraft to be modified.

Approved under DGAC DOA No. F.JA01 67A005 Page 6/7

2001.08.01
eurocopter

an EADS Company

• -2 ..gA.

Figure 1

ALERT SERVICE BULLET1N EC 120

tO

LO

2

Approved under DGAC DOA No. F.JA01 67A005 Page 7/7

2001.08.01