# XX

TRANSLATION OF



## BOLLETTINO TECNICO N° 

# 119- 47

The technical content of this document is approved

under the authority of DOA nr EASA.21J.005. DATE March 29 , 2012

REV.

xxxxxxx

Compliance with

this bollettino is:



# XX Page 1 of 6 SUBJECT: LEFT AND RIGHT PILOT DOORS WINDOW BONDING.

REASON: P rovide the necessary instructions to bond the window and the relevant

seal to the window frame of the left and right pilot doors

.

HELICOPTERS AFFECTED:

All the Agusta A119 and AW119MKII helicopters up to S/N 14 781

included.

NOTE

The pilot doors assy P/N 109-0360- 01 -163/-
164 at stock, are affected with this Bollettino.

COMPLIANCE:

Within the next 50 (fifty ) flight hours after the receipt of this Bollettino and

however within and not later than September 3 0 , 2012.

DESCRIPTION:

One AW119MKII helicopter owned by Agusta has lost the pilot door window during a test flight. No injuries to the occupant or damages to the helicopter occurred. The investigation revealed that the event was caused by the incorrect information reported in the manufacturing job card, that did not require the bonding of the seal both to the window and to the door structure. This Bollettino is issued in order to verify the left and right pilot doors

window installation and pro vid e the necessary instructions to recover the conformity in case the seal is found not bonded. The instructions contained in this Bollettino are prescribed as a precautionary measure to prevent any occurrence to the helicopter and its occupants

.B.T. 119-47

Page 2 of 6 REQUIRED MANPOWER:

Estimated 2 (two) manpower hours are required for compliance with this

Bollettino.

WARRANTY:

Within the calendar terms mentioned at point “Compliance”, the parts required to apply the present Bollettino shall be supplied on a free of charge basis by AgustaWestland upon Customers request, except for

consumable materials. Upon application of this Bollettino, Customers are requested to submit to AgustaWestland Warranty Administration the Technical Bulletin Compliance form, attached to this Bollettino duly completed in all its parts, and relevant W.M.M. (Warranty Claim/Maintenance Work Order/Malfunction Report). All removed parts have to be returned to AgustaWestland after received relevant RMA (Return Material Authorization).

REQUIRED MATERIALS:

The following material is required for compliance with this Bollettino:

SPECIFICATION DESCRIPTION Q.TY

999-1700-49-101G Seal filler 4,5 m

In addition the following consumable materials are required for compliance with this Bollettino:

SPECIFICATION DESCRIPTION Q.TY

199-05-152 Adhesive RTV732 A.R. TY I CL 2 (cod. 900003249)

TT-N-95 Aliphatic Naphtha A.R. TY 2 (cod. 531055030)

Commercial Masking tape A.R.

Commercial Soap solution A.R.

SPECIAL TOOLS:

N.A.

WEIGHT AND BALANCE CHANGES:

N.A.

REFERENCES:

A119/AW119MKII Maintenance Manual.

PUBLICATIONS AFFECTED:

N.A.B.T. 119-47

Page 3 of 6 COMPLIANCE INSTRUCTIONS:

(See figure 1)

1. Prepare the helicopter on ground for a safe maintenance, disconnect any power supply.

2. In accordance with the procedures given in the A119/AW119MKII Maintenance Manual remove the pilot doors.

3. Position the left pilot door on the work bench.

NOTE In order not to damage the window put on the work bench a protective sheet.

4. With reference to figure 1 check the door to verify the presence of bonding between seal (3) and window (4) in the junction area of the seal (internal and external side). If there’s presence of bonding perform steps 21., 22., 23. and 24.

of this Bollettino. If there’s no presence of bonding perform step 5. and following of

this Bollettino.

5. With reference to figure 1 pull the seal filler (2) then remove it from the seal (3). Discard the seal filler.

6. Hold the window (4) externally to make sure that it does not fall

down.

7. Carefully push the window (4) outboard. Remove the window (4) and the seal (3) from the door structure (1).

8. Remove the seal (3) from the window (4).

9. Clean the window (4) and the seal seat on the door structure (1) with a clean cloth moistened in the TT-N-95 TY 2 Aliphatic Naphtha. Dry the cleaned area with the clean cloth.

10. Clean the seal (3) with a clean cloth moistened in the TT-N-95 TY 2 Aliphatic Naphtha. Dry the cleaned area with the clean

cloth.

11. Check the seal (3) for absence of damages.

12. Install the seal (3) on the window frame of the door structure (1).

NOTE The tight grove of the seal (3) engages the door structure (1) (ref. figure 1 section A-A).B.T. 119-47

Page 4 of 6 13. Install the window (4) in the seal (3) previously on the window frame of the door structure (1), by means of a suitable plastic spatula.

CAUTION Perform the operation carefully to avoid damaging the seal.

14. Apply the masking tape along the entire perimeter of the window (4) and of the door structure (1) near the seal (3) to prevent the same from being soiled with adhesive in the subsequent operation.

15. On the external side of the door, bond the edges of the window (4) in the groove of the seal (3) with the 199-05-152 TY I CL 2 adhesive (RTV732 or equivalent).

NOTE Clean any adhesive squeeze out with a clean cloth immediately.

16. Bond the edges of the door structure (1) in the groove of the seal (3) with the 199-05-152 TY I CL 2 adhesive (RTV732 or equivalent).

NOTE 1 Clean any adhesive squeeze out with a clean cloth immediately.

NOTE 2

Leave adhesive to cure at room temperature for at least 24 hours.

17. Repeat steps 14., 15. and 16. on the internal side of the door.

18. Cut the seal filler P/N 999-1700-49-101G at a length of 2060 mm.

19. Install the new seal filler (2) above mentioned, in the related groove of the seal (3) as follows:

19.1 Apply a solution of soap and water with a brush into the groove where you must install the seal filler (2).

19.2 Keep one end of the seal filler (2) in its position with your hand.

19.3 Carefully put the seal filler (2) in the related groove of the seal (3) by hand.B.T. 119-47

Page 5 of 6 20. Remove the masking tape from the window (4) and from the door structure (1).

21. In accordance with the procedures given in the A119/AW119MKII Maintenance Manual reinstall the left pilot door.

22. Repeat steps from 3. to 21. for the right pilot door.

23. Return the helicopter to a ready to flight condition.

24. Record compliance with this Bollettino in the helicopter log book.B.T. 119-47

Page 6 of 6 

## FIGURE 1Note:

Remarks:

Informazioni:

Information:

A l fine di gestire le varianti alla configurazione base, in relazione all’emissione del Bollettino Tecnico, preghiamo di voler compilare il presente modulo in tutte le sue parti e spedirlo all’indirizzo sopra indicato. Si ringrazia per la gentile collaborazione data.

We request your cooperation in filling this form, in order to keep out statistical data relevant to aircraft configuration up-to-date. The form should be filled in all its parts and sent to the above address. We thank you beforehand for the information given. MODULO APPLICAZIONE BOLLETTINO TECNICO

TECHNICAL BULLETIN COMPLIANCE FORM Data:

Date:

Num ero:

Number:

Rev isione:

Revision: Prego spedire a questo indirizzo:
Please send to the following address:



### AGUSTA WE STLAND S.p.A.

CUSTOMER SUPPORT & SERVICES - ITALY

PR ODUCT SUPPORT ENGINEERING DPT.

Via del Gregge, 100

2101 5 Lonate Pozzolo (VA) - ITALY

Tel.: +39 0331 664600

Fax: +39 0331 66468 4

Telefono:
Telephone:

Fa x:

Data Applicazione B.T.:
B.T. Compliance Date: Denom inazione Cliente ed Indirizzo:

Customer Name and Address:

Modello Elicottero
Helicopter Model S/ N Matricola

Tail Number Ore Totali

Total Hours Ore D.U.R.

T .S.O.