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N° 1 09S-079 DA TE: May 28, 2018 REV. : A -June 4, 2018 P ag e 1 of 15 TITLE AT A 53 - BAGGAGE FAIRING ASSY FWD UP P/N 109-0344-31-1 01, MODIFICATION OF
REVISION LOG Revision A is issued to:
- modify and add some alternatives to the required materials
- add adhesive RTV732 as preferable to adhesive EC776
- correct the last note of the accomplishment instructions (Part II^) Revision bars in the margin identify changes.
Helicopters that have complied with previous issues of this Service Bulletin do not need any additional action.
Leonardo S.p.A.
Via Giovanni Agusta, 520 21017 Cascina Costa di Samarate (VA) Italy Tel.: +39 0331 229111 - Fax: +39 0331 229605/222595 An appropriate entry should be made in the aircraft log book upon accomplishment.
If ownership of aircraft has changed, please, forward to new owner.
EMERGENCY ALERT
SERVICE BULLETIN
S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 Page 2 of 15 REVISION: A - June 4, 2018
1. PLANNING INFORMATION A. EFFECTIVITY The A109S Leonardo Helicopters S/N 22702 and 22703.
B. COMPLIANCE Part I^:
Before the next flight.
Part II^:
Within and no later than 15 (fifteen) flight hours since the issuance of revision / of this Service Bulletin.
NOTE If Part II^ is applied before Part I^, consider Part I^ as not applicable.
C. CONCURRENT REQUIREMENTS N.A.
D. REASON This Service Bulletin is issued in order to provide the necessary instructions on how to both install a new decal with temporary limitation related to baggage compartment and introduce a new page within RFM (Part I^) and modify the baggage fairing assy fwd up P/N 109-0344-31-101 (Part II^).
E. DESCRIPTION A case of wire chafing, which led to fire ignition and smoke in the baggage compartment, has been reported on an AW109SP helicopter.
The investigation concluded that this chafing was caused by the blind rivets of the hinge P/N 109-0344-31-123 pushed towards the cables arriving at the 50 Amps CB installed on the CB panel by unrestrained baggage.
In the meantime the final corrective action is put in place, Leonardo Helicopters, as a precautionary measure, issued this Service Bulletin in order to introduce a temporary limitation to the baggage compartment loading (Part I^) until the introduction of Part II^.
S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 REVISION: A - June 4, 2018 Page 3 of 15 The Part II of this SB provide the instructions to shim the installation of the baggage fairing assy fwd up P/N 109-0344-31-101 to move it away from the CB panel and install a silicon rubber protection over the blind rivets of the hinge.
F. APPROVAL The technical content of this Service Bulletin is approved under the authority of DOA nr. EASA.21J.005. For helicopters registered under other Aviation Authorities, before applying the Service Bulletin, applicable Aviation Authority approval must be checked within Leonardo Helicopters customer portal.
EASA states mandatory compliance with inspections, modifications or technical directives and related time of compliance by means of relevant Airworthiness Directives.
If an aircraft listed in the effectivity embodies a modification or repair not LHD certified and affecting the content of this Service Bulletin, it is responsibility of the Owner/Operator to obtain a formal approval by Aviation Authority having jurisdiction on the aircraft, for any adaptation necessary before incorporation of the present Service Bulletin.
G. MANPOWER To comply with this Service Bulletin the following Maintenance-Man-Hours (MMH) are deemed necessary:
Part I^ : approximately 1 (one) MMH Part II^ : approximately 3 (three) MMH MMH are based on hands-on time and can change with personnel and facilities available.
H. WEIGHT AND BALANCE N.A.
I. REFERENCES
1) PUBLICATIONS
DATA MODULE DESCRIPTION PART DM01 0B-A-00-20-00-00A-120A-A Helicopter on ground for a safe maintenance I, II DM02 0B-A-06-41-00-00A-010A-A Access doors and panels - General data II
S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 Page 4 of 15 REVISION: A - June 4, 2018
2) ACRONYMS AFT After CB Circuit Breaker DOA Design Organization Approval EASA European Aviation Safety Agency FWD Forward LHD Leonardo Helicopters Division MMH Maintenance Man Hours N.A. Not Applicable P/N Part Number
3) ANNEX N.A.
J. PUBLICATIONS AFFECTED 0B-A-IPB-00-X Illustrated Parts Data Publication K. SOFTWARE ACCOMPLISHMENT SUMMARY N.A.
S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 REVISION: A - June 4, 2018 Page 5 of 15
2. MATERIAL INFORMATION A. REQUIRED MATERIALS
1) PARTS PART I^ N.A.
PART II^ # P/N ALTERNATIVE P/N DESCRIPTION Q.TY LVL NOTE LOG P/N 1 109G5340P02-101 Baggage Fairing Inst. Retromod REF 2 109G5340P02-103 Gasket (4.76 mm) REF. . (1) 3 109G5340P02-105 Gasket (0.8 mm) REF. . (2) 4 109G5340P02-113 Gasket (4.76 mm) REF. . (1) 5 109G5340P02-115 Gasket (0.8 mm) REF. . (2) 6 109G5340P02-107 Washer (Teflon) REF. . (3) 7 109G5340P02-109 Washer (Teflon) REF. . (3) 8 109G5340P02-111 Washer (Teflon) REF. . (3) 9 A428A08C09 120-225C08-09 or AN525-832R9 Screw 4 .
10 A428A08C10 120-225C08-10 or AN525-832R10 Screw 2 .
2) CONSUMABLES The following consumable materials, or equivalent, are necessary to accomplish this Service Bulletin:
# Spec./LHD code number DESCRIPTION Q.TY NOTE PART 11 199-05-152 TY I, CL 2 Adhesive RTV732 AR (4)(5) II 12 Commercial Adhesive Flexon F246 AR (4) II 13 A-A-59588 CL 2A Grade 40 color red thickness 4,76 mm Silicone rubber sheet AR (1) (4) II 14 A-A-59588 CL 2B Grade 40 Orange thickness 0,80 mm Silicone rubber sheet AR (2) (4) II 15 AMS3656 Type I, external diameter 10mm Teflon Tube AR (3) (4) II
3) LOGISTIC MATRIX N.A.
NOTE
(1) Q.ty 1 gasket P/N 109G5340P02-103 and -113 to be obtained from silicone rubber sheet (A-A-59588 CL 2A Grade 40 thickness 4,76 mm - Ref to item 13 -). For dimensions see Figure 3.
(2) Q.ty 1 gasket P/N 109G5340P02-105 and -115 to be obtained from silicone rubber sheet (A-A-59588 CL 2B Grade 40 thickness 0,8 mm - Ref to item 14 -). For
S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 Page 6 of 15 REVISION: A - June 4, 2018 dimensions see Figure 3.
(3) Q.ty 2 washers P/N 109G5340P02-107, -109 and -111 to be obtained from teflon tube (AMS3656 Type I, external diameter 10mm - Ref to item 15 -). For dimensions see Figure 3.
(4) Local supply.
(5) Adhesive EC776 (C111 - 199-05-107 TY II, CL 5) can be used as alternative.
B. SPECIAL TOOLS N.A.
C. INDUSTRY SUPPORT INFORMATION WARRANTY: Owners/Operators who comply with the instructions of this Service 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 and Special Tools.
NOTE: Customers who fail to comply with the instructions in this Service Bulletin before the compliance date are not eligible for the aforementioned special policy.
Please Issue relevant MMIR form to your Warranty Administration Dpt.
S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 REVISION: A - June 4, 2018 Page 7 of 15
3. ACCOMPLISHMENT INSTRUCTIONS
GENERAL NOTES
a) Replace the hardware found damaged during the following operations.
b) Let adhesive cure at room temperature for at least 4 hours unless otherwise specified.
c) At the end of the rework operations, remove all the used tools and completely remove any working residual using a suitable air cleaner.
d) All lengths are in mm.
PART I^ 1 . In accordance with the instruction given in the DM 09-A-00-20-00-00A-120A-A, prepare the helicopter on ground for a safe maintenance.
2. Locally manufacture the new decal shown in Figure 5 and install on internal side of baggage door D8.
3. Cut Figure 6 along the dashed line and insert it before the RFM page 1-28. The new page supersedes the next one.
4. Return the helicopter to a ready to flight condition and record for compliance with Part I of this Service Bulletin on the helicopter logbook.
PART II^
1. In accordance with the instructions given in the DM 09-A-00-20-00-00A-120A-A, prepare the helicopter on ground for a safe maintenance.
2. In accordance with the DM 0B-A-06-41-00-00A-010A-A, open the baggage door D8.
NOTE B efore removing the fairing, disconnect the baggage light P/N B3550-307 (Ref. step 3).
3. With reference to Figure 1, remove the baggage fa iring assy fwd up P/N 109-0344-31-101.
4. With reference to Figure 2, inspect the installation of the terminal lugs arriving at the CB panels.
4.1 Remove the rubber protections P/N 109-0746-52-105 and -107.
4.2 Inspect the installation of the terminal lugs and if necessary restore it referencing to figure 2.
S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 Page 8 of 15 REVISION: A - June 4, 2018
4.3 Reinstall the rubber protections P/N 109-0746-52-105 and -107.
NOTE S ee Figure 3 to obtain the gasket P/N 109G5340P02-103 and P/N 109G5340P02-105 from the Consumables 13 and 14 (Ref. step 5).
5. With reference to Figure 3 and 4, install the gas kets P/N 109G5340P02-103 and P/N 109G5340P02-105 on the hinge P/N 109-0344-31-123 as described in the following procedure.
5.1 With reference to Figure 3 detail C and section E-E, temporarily install the gasket P/N 109G5340P02-103 in its location on the hinge and countermark on it the position of the n. 8 hinge rivets.
5.2 Remove the gasket P/N 109G5340P02-103 from the baggage fairing assy fwd up and carefully drill n. 8 Ø 6.00 mm holes.
5.3 With reference to Figure 3 section E-E, install the gasket P/N 109G5340P02-103 on the hinge and the gasket P/N 109G5340P02-105 on the gasket P/N 109G5340P02-103 by mean of adhesive 199-05-152 TY I, CL 2.
NOTE S ee Figure 3 to obtain the gasket P/N 109G5340P02-113 and P/N 109G5340P02-115 from the Consumables 13 and 14 (Ref. step 6).
6. With reference to Figure 3 and 4, install the gas kets P/N 109G5340P02-113 and P/N 109G5340P02-115 on the hinge P/N 109-0344-31-115 as described in the following procedure.
6.1 With reference to Figure 3 detail C and section E-E, temporarily install the gasket P/N 109G5340P02-113 in its location on the hinge and countermark on it the position of n. 8 hinge rivets.
6.2 Remove the gasket P/N 109G5340P02-113 from the baggage fairing assy fwd up and carefully drill n. 8 Ø 6.00 mm holes.
6.3 With reference to Figure 3 section E-E, install the gasket P/N 109G5340P02-113 on the hinge and the gasket P/N 109G5340P02-115 on the gasket P/N 109G5340P02-113 by mean of adhesive 199-05-152 TY I, CL 2.
S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 REVISION: A - June 4, 2018 Page 9 of 15 NOTE F ix the spacers with adhesive Consumable 12 to keep them in position (Ref. step 7).
NOTE See Figure 3 to obtain the the washers P/N 109G5340P02-107, P/N 109G5340P02-109 and P/N 109G5340P02-111 from the Consumable 15 (Ref. step
7).
7. With reference to Figure 4, install the washer P/ N 109G5340P02-107, P/N 109G5340P02-109 and P/N 109G5340P02-111 on the upper surface of the baggage fairing assy fwd up P/N 109-0344-31-101.
8. With reference to Figure 1 and 4, reinstall the baggage fairing assy fwd up P/N 109-0344-31-101 replacing the indicated screws with the new screws P/N A428A08C09 and A428A08C10.
NOTE I f Part II^ is applied before Part I^ of this Service Bulletin, go to step 11.
9. Remove the decal installed on baggage door as per Part I^ of this SB.
10. Remove the page insert on RFM as per Part I^ of this SB.
11. Return the helicopter to a ready to flight condition and record for compliance with Part II of this Service Bulletin on the helicopter logbook.
12. Send the attached compliance form to the following mail box:
aw109.mbx.aw@leonardocompany.com As an alternative, gain access to My Communications section on Leonardo WebPortal and compile the “Service Bulletin Application Communication”.
* LEONARDO
HELICOPTERS 109-0344-31-101
FAIRING ASSY FWD UP (REF) DETAIL C ¢в 109-0344-31-111
DOOR AFT (REF) VIEW A Figure 1 S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 Page 10 of 15 REVISION: A - June 4, 2018
: LEONARDO
HELICOPTERS 109-0746-52-107 109-0746-52-105
RUBBER PROTECTION (REF) RUBBER PROTECTION (REF) "HATTERY BUS VIEW D (Terminal Lugs Installation - for reference only) Typ. for both CB panels Figure 2 S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 REVISION: A - June 4, 2018 Page 11 of 15
* LEONARDO HELICOPTERS
100.01 109G5340P02-113 GASKET 109G5340P02-103 GASKET 109G5340P02-115 GASKET 109G5340P02-105 GASKET
DETAIL C 165 109G5340P02-103 and 109G5340P02-105 GASKET BOND -113 TO STRUCTURE AND -113 TO 115 WITH ADHESIVE 199-05-152 TY I CL 2 (TYP FOR -103 AND -105)
140.0 109G5340P02-113 and 109G5340P02-115 GASKET -115 REF -113 REF @ 10.0 • 10.0 ø 10.0 SECTION E-E ø 4.27 - 4.39 ø 4.27 - 4.39 ø 4.27 - 4.39 109G5340P02-107 109G5340P02-109 109G5340P02-111
WASHER WASHER WASHER Figure 3 S.B. N°109S-079 EMERGENCY ALERT DATE: May 28, 2018 Page 12 of 15 REVISION: A - June 4, 2018