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TRANSLATION OF
BOLLETTINO TECNICO N°109S-073 The technical content of this document is approved under the authority of DOA nr EASA.21J.005.
DATE December 15, 2016 REV.
Compliance with this bulletin is:
P age 1 of 8 SUBJECT: FIRE EXTINGUISHER BOTTLE P/N 27300-1.
REASON: Provide the necessary instructions to perform a visual inspection of the Bypass Outlet Assembly (red) installed on the subject bottle.
HELICOPTERS AFFECTED:
All the A109S helicopters equipped with the Engine Fire Extinguishers Kit P/N 109-0811-39-107.
All the fire extinguishing bottles P/N 27300-1 in stock.
COMPLIANCE:
Within 25 FH or 3 (three) months after the receipt of this Bollettino (whichever comes first) and subsequently every 200 FH or 12 (twelve) months (whichever comes first).
NOTE For the fire extinguisher bottles in stock:
- The initial inspection can be performed before installation on the helicopter.
- No recurring inspection is required until the fire extinguisher bottles remain in stock.
MANDATORY An appropriate entry should be made in the aircraft log book upon accomplishment.
If ownership of aircraft has changed, please, forward to new owner.
Leonardo S.p.A.
Via Giovanni Agusta, 520 21017 Cascina Costa di Samarate (VA) Italy Tel.: +39 0331 229111 - Fax: +39 0331 229605/222595
B.T. 109S-073
Page 2 of 8
DESCRIPTION:
A case of fracture of the Bypass Outlet Assembly (red), part of the fire extinguishing bottle P/N 27300 -1, has been reported on an AW109SP helicopter during maintenance operations.
This Bollettino is issued in order to provide the necessary instructions to perform a recurring visual inspection on the Bypass Outlet Assembly (red) for cracks and to require the fire extinguisher bottle P/N 27300-1 replacement in case of cracks.
REQUIRED MANPOWER:
An estimated 2 (two) manpower hours are required for compliance with this Bollettino.
Additional 3 (three) manpower hours can be required for fire extinguisher bottle P/N 27300-1 replacement.
WARRANTY:
Owners/Operators who comply with the instructions of this Bulletin, no later than the applicable date in the “Compliance section” will be eligible to receive REQUIRED MATERIALS on free of charge basis, except for Consumable Materials.
NOTE: Customers who fail to comply with the instructions in this bulletin before the compliance date are not eligible for the aforementioned special policy.
NOTE: Customers shall be eligible for the aforementioned policy, provided that they send pictorial evidence of the damaged part.
Please Issue relevant M.M.I.R. form ( (M)aintenance (M)alfunction (I)nformation (R)eport ) to your Warranty Administration Dpt.
B.T. 109S-073
Page 3 of 8
REQUIRED MATERIALS:
The following materials may be required for compliance with this Bollettino:
P/N DENOMINATION Q.TY NOTES P/N 27300-1 Fire Extinguisher Bottle A.R. (1)(2)
NOTE:
(1) Material required only in case of Fire Extinguisher Bottle P/N 27300-1 replacement.
(2) Material that may be required for each helicopter side.
SPECIAL TOOLS:
N.A.
WEIGHT AND BALANCE CHANGES:
N.A.
REFERENCES:
0B-A-AMP-00-X Maintenance Publication.
PUBLICATIONS AFFECTED:
N.A.
B.T. 109S-073
Page 4 of 8
COMPLIANCE INSTRUCTIONS:
(See figures 1 and 2)
1. Prepare the helicopter on ground for a safe maintenance, disconnect any power supply.
2. In accordance with the instructions given in the 0B -A-AMP-00-X Maintenance Publication , remove the ejector fairing and the aft fairing to gain access to the fire extinguishing bottles.
3. Using an inspection mir ror and a suitable light source , perform a visual inspection of the bypass outlet assembly (red), installed on the fire extinguishing bottle P/N 27300 -1, to check the welds for presence of cracks.
NOTE 1 Put p articular attention to the area where the two welds are joint (ref. Figure 2).
NOTE 2 The present procedure is to be applied on the # 1 and # 2 extinguishing bottles.
4. In case no cracks are found, proceed as described in steps 7 and following.
5. In case a crack is found , remove the Fire Extinguisher Bottle P/N 27300-1 in accordance with the removal procedures reported in the in the 0B-A-AMP-00-X Maintenance Publication.
B.T. 109S-073
Page 5 of 8
NOTE 3 Do not scrap the removed Fire Extinguisher Bottle and send it to Leonardo Helicopters for investigation. Refer to the following email box to obtain shipping instructions:
aw109.mbx.AW@leonardocompany.com.
NOTE 4 Remove the cartridges from the Fire Extinguisher Bottle, before sending it to LHD, in accordance with the instructions given in the 0B -A-AMP-00-X Maintenance Publication. Re -use these cartridges on the new Fire Exti nguisher Bottle, installing them in accordance with the instructions given in the 0B -A-AMP-00-X Maintenance Publication.
WARNING The cartridges of the fire extinguishing bottle are pyrotechnical and electrical sensitive devices. Be careful to prevent electrical discharge when you touch the fire extinguishing bottle. Explosion of the cartridges can cause injury to the personnel.
6. Install an airworthy Fire Extinguisher B ottle P/N 27300 -1 in accordance with the following procedures.
6.1 Place the Fire Extinguisher Bottle P/N 27300 -1 in its position on the helicopter, without tightening the three fitting screws ( item 3, Figure 1).
B.T. 109S-073
Page 6 of 8
6.2 Connect the hoses to the Bypass Outlet Assembly (red), adjusting its orientation on the Fire Extinguisher Bottle.
6.3 Tighten the Bypass Outlet Assembly (red) on the Fire Extinguisher Bottle with 33.9 ÷ 40.7 Nm.
6.4 Tighten the Bypass Outlet Assembly (black) on the Fire Extinguisher Bottle with 33.9 ÷ 40.7 Nm.
6.5 Install the lockwire between the swivels of the outlets and the fire extinguisher bottle.
6.6 Tighten the three fitting screws (3).
6.7 Install the cartridges on the Fire Extinguisher Bottle in accordance with the instructions given in the 0B -A-AMP-00-X Maintenance Publication.
6.8 Complete the installation of the Fire Extinguisher Bottle with the instructions given in the 0B-A-AMP-00-X Maintenance Publication.
7. Reinstall the ejector fairing and the aft fairing in accordance with the instruction contained in the 0B-A-AMP-00-X Maintenance Publication.
8. Return the helicopter to a ready to flight condition.
9. Record compliance with this Bollettino in the helicopter log book.
10. Send the attached compliance form to the following email box:
aw109.mbx.AW@leonardocompany.com. As an alternative, gain access to My Communications section on Leonardo Web Portal on AW website and compile the “Technical Bulletin Application Communication”.
B.T. 109S-073
(1) Cartridge Fire Extinguisher Bottle P/N 27300-1
(3) Fire Extinguisher Bottle
(1) Cartridge fitting screw (3 off)
(2) Bypass Outlet Assembly FIGURE 1 (L- shown - for reference only) Page 7 of 8
B.T. 109S-073
Page 8 of 8
FIGURE 2 (Inspection Area – black lines represent the welds to be inspected)
Bypass Outlet Assembly Put particular care in inspecting this area
Remarks:
Information:
BOLLETTINO TECNICO COMPLIANCE FORM Date:
Number:
Revision:
Please send to the following address:
Telephone:
Fax:
B.T. Compliance Date:
Customer Name and Address:
Helicopter Model S/N Total Number Total Hours T.S.O.
LEONARDO S.p.A.
CUSTOMER SUPPORT & SERVICES - ITALY PRODUCT SUPPORT ENGINEERING & LICENSES DEPT.
Via Giovanni Agusta, 520 21017 Cascina Costa di Samarate (VA) - ITALY Tel.: +39 0331 225036 Fax: +39 0331 225988 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 or you can communicate the application also via Technical Bulletin Application Communication Section placed in Leonardo AW Customer Portal - MyCommunications Area. We thank you beforehand for the information given.