# ALERT

TRANSLATION OF 

## BOLLETTINO TECNICO N° 

# 109S

- 44

The technical content of this document is approved under the authority of DOA nr EASA.21J.005. DATE August 05, 2011

REV. xxxxxxx

Compliance with this bollettino is:



# ALERT Page 1 of 6 SUBJECT: INSPECTION OF THE LEFT ELEVATOR ASSY P/N 109

- 0200

- 02

- 601 /

-

801 AND RIGHT ELEVATOR ASSY P/N 109

- 0200

- 02

- 602 /

- 802

.
REASON: Introduce an inspection to the subject elevators to verify the presence of

cracks on the upper skin

.
HELICOPTERS AFFECTED:

All the Agusta A109S helicopters

.
COMPLIANCE:

 For those left elevator assy P/N 109

- 0200

- 02

- 601/

- 801 and /or right elevator assy P/N 109

- 0200

- 02

- 602/

- 802 having less than 400 (four hundred) flight hours: at reaching of 400 (four hundred) flight hours within and not later than 30 (thirty) flight hours and subsequently each 50 (fifty) flight hours

.
 For those left elevator assy P/N 109

- 0200

- 02

- 601/

- 801 and /or right elevator assy P/N 109

- 0200

- 02

- 602/

- 802 having more or equal than 400 (four hundred) flight hours : within and not later than 30 (thirty) flight hours after the receipt of this Bollettino and however within and not later than November 30, 2011, and subsequently each 50 (fifty) flight hours

.
DESCRIPTION:

A case of fracture of the left elevator assy P/N 109

- 0200

- 02

- 60 1 along the riveting of the upper skin to the fourth rib

, has been reported on an A109S helicopter. The performed investigations have revealed that the fracture reported on the left elevator assy P/N 109

- 0200

- 02

- 601 is due to fatigue

.B.T. 109S

- 44

Page 2 of 6 This Bollettino is issued in order to provide the necessary instructions to

perform a visual inspection with a 5 ÷ 10 magni fication lens to verify the presence of cracks on the upper skin of the left elevator assy P/N 109

- 0200

- 02

- 601 /

- 801 and right elevator assy P/N 109

- 0200

- 02

- 602 /

- 802 , in

corr e sponden ce of the riveting of the upper skin to the fourth rib

. In case of doubt about the presence or absence of cracks are also given instructions to carry out an inspection penetrant

.
REQUIRED MANPOWER :

Negligible. In case of liquid penetrant inspection 1 (one) hour for each elevator assy.

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 Agusta upon Customer’s request, except for consumable materials. Upon application of this Bollettin o, Customers are requested to submit to Agusta Warranty Administration the Technical Bulletin Compliance form, attached to this Bulletin duly completed in all its parts, and relevant M.M.I.R. (Maintenance Malfunction Information Report).

REQUIRED MATERIAL S:

The following materials could be required for compliance with this Bollettino:

P/N DENOMINATION Q.TY 109

- 0200

- 02

- 601 Left elevator assy 1 109

- 0200

- 02

- 602 Right elevator assy 1 109

- 0200

- 02

- 8 01 Left elevator assy 1 109

- 0200

- 02

- 8 02 Right elevator assy 1

The following consumable materials are required for compliance with this Bollettino:

SPECIFICATION DENOMINATION Q.TY TT

- N

- 95 type 2 Aliphatic Naphtha A.R. (code 531055030) C ommercial G auze A.R. (code 590164695 )

SPECIAL TOOLS:

The following special tools are required for compliance with this Bollettino:

P/N DENOMINATION Commercial 5 ÷ 10 magnification lens P6R Penetrant ARDROX 9PR5 Solvent ARDROX 9D1B Developer ARDROX Commercial Fine

- pointed brushB.T. 109S

- 44

Page 3 of 6 P/N DENOMINATION Commercial White light source of at least 1000 lux Commercial Soft brush

WEIGHT AND BALANCE CHANGES:

N.A.

REFERENCES:

0B

- A

- AMP

- 00

- X Maintenance Publication

.
PUBLICATIONS AFFECTED:

0B

- A

- AMPI

- 00

- P

- EASA Maintenance Planning Information; 0B

- A

- AMPI

- 00

- P

- FAA Maintenance Planning Information; 0B

- A

- AMP

- 00

- X Maintenance Publication

.
COMPLIANCE INSTRUCTIONS:

(See figure 1)

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

.
2. Gain access to the upper side of the left elevator assy P/N 109

- 0200

- 02

- 601 /

- 801 and accurately clean inspection area using a gauze soaked in a liphatic naphtha (ref. figure 1)

.
3. Using a 5 ÷ 10 magnification lens perform a visual inspection to verify the p resence of cracks in the elevator upper skin in correspondence of the fourth rib fixing rivets line in the area shown in figure 1

.
3.1 In case on the elevator upper skin there is NOT presence of cracks, n o corrective action is required. P roceed as describ ed in steps 4 and following

.
3.2 In case on the elevator upper skin there is presence of cracks, contact the AgustaWestland , and the elevator must be removed, in accordance with the instructions given in the 0B

- A

- AMP

- 00

- X Maintenance Publication, to perform a repair.

3.3 In case of doubt about the presence of cracks on the elevator upper skin , proceed in the following liquid penetrant inspection:

CAUTION Personnel conducting the liquid penetrant inspection must be qualified in accordance with EN4179/NAS410A practise or other equivalent practise or standard

.B.T. 109S

- 44

Page 4 of 6 3.3.1 If necessary clean again with a liphatic naphtha the area to inspect in order to remove the contaminants. Leave dry the

a liphatic naphtha

.
3.3. 2 Outline the area to inspect using only tape in which the does not absorb the solvent.

NOTE The penetrant, the part to be inspected and the ro om temperatures shall be between 15÷45 °C

.
3.3. 3 Using a fine

- pointed brush apply the P6R penetrant in all the area to inspect (ref. figure 1) for 30÷40 minutes dwell time.

3.3. 4 Under a white light source of at least 1000 lux, remove excess penetrant firstly with a dry clean gauze and then a gauze dampened (NOT SOAKED) with 9PR5 solvent.

NOTE The solvent must never be poured directly over the area to inspect.

3.3. 5 Repeat the removal of the excess penetrant with gauze dampened with 9PR5 solvent, unt il it was completely removed any residual background colour.

3.3. 6 After complete evaporation of solvent, apply a thin uniform layer of 9D1B developer spraying it from a distance of 30÷40 cm. Prior to use shake the developer spray can for at least 1 minut e.

CAUTION Accidental developer leakages require the full clean of the part and the full re processing of the part

.
3.3. 7 After 10 minutes of developer dwell time, carefully check the inspection area (ref. figure 1) to interpret any red signs on a white background.

CAUTION The operator cannot wear sunglasses or photochromic lenses.

3.3.8 In case on the elevator upper skin there is presence of cracks, contact the AgustaWestland, and the elevator must be removed, in accordance with the instructions given in the 0B

- A

- AMP

- 00

- X Maintenance Publication, to perform a repair.B.T. 109S

- 44

Page 5 of 6 3.3. 9 After inspection, accurately clean the affected area from any used products residual with gauze soaked in 9PR5 solvent and eventually using a soft brush.

4. Repeat steps 2 and 3 for the right elevator assy P/N 109

- 0200

- 02

- 602 /

- 802

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

.
6. Record compliance with this Bollettino in the helicopter log book.B.T. 109S

- 44

Page 6 of 6 

## FIGURE 1Note: Remarks:

Informazioni: Information: Al fine di gestire le varianti alla configur azione base, in relazione all’emissione de l Bollettino Tecnico, preghiamo di voler compilare il presente modulo in tutte le sue parti e sped irlo all’indirizzo sopra indicato. Si ring razia 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:

Numero: Number:

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

### AGUSTA **S.p.A.** CUSTOMER SUPPORT & SERVICES - ITALY PRODUCT SUPPORT ENGINEERING DPT. Via del Gregge, 100 2101 5 Lonate Pozzolo (VA) - I T ALY T el

. : +39 0331 664600 Fa x : +39 0331 66468 4

Telefono: Telephone:

Fax:

Data Applicazione B.T.: B.T. Compliance Date: Denominazione 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.