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N ° 109K-075 D ATE: March 8, 2021 REV. : / - March 15, 2017 P age 1 of 8 TITLE ATA 63 - INSPECTION OF ROTOR BRAKE CONTROL CABLE P/N 109-0506-17-109/-113
REVISION LOG New Issue 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 ALERT
SERVICE BULLETIN
S.B. N°109K-075 ALERT DATE: March 8, 2021 Page 2 of 8 REVISION: /
1. PLANNING INFORMATION A. EFFECTIVITY All the Leonardo S.p.A. A109K2 helicopters equipped with rotor brake kit P/N 109-0810-63-(all dashes).
B. COMPLIANCE Within and not later than 50 flight hours after the issue of this Service Bulletin, and subsequently each 100 flight hours.
C. CONCURRENT REQUIREMENTS N.A.
D. REASON This Service Bulletin is issued in order to provide the necessary instruction on how to perform an inspection of the control cable P/N 109-0506-17-109/-113, part of the rotor brake kit 109-0810-63.
E. DESCRIPTION An inspection after an in-service event occurred to an A109S model helicopter revealed that the terminating section (cockpit side) on the control cable P/N 109-0506-17-113 of the rotor brake system was damaged. In order to prevent possible malfunction of the rotor brake system, Leonardo Helicopter decided to issue this Service Bulletin to inspect the control cable in proximity of the control quadrant to verify its integrity.
F. APPROVAL The technical content of this Service Bulletin is approved under the authority of DOA nr. EASA.21.J.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
S.B. N°109K-075 ALERT DATE: March 8, 2021 REVISION: / Page 3 of 8 the aircraft, for any adaptation necessary before incorporation of the present Service Bulletin.
G. MANPOWER To comply with this Service Bulletin 1 (one) MMH is deemed necessary.
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
SECTION/PARAGRAPH DESCRIPTION PART DM01 00-20-1 Helicopter safety - DM02 63-23-22 Control cable - Removal/Installation - DM03 63-23-26 Control cable - Removal/Installation -
2) ACRONYMS AMDI Aircraft Material Data Information AR As Required DOA Design Organization Approval EASA European Aviation Safety Agency IPC Illustrated Parts Catalog LHD Leonardo Helicopters Division MM Maintenance Manual MMH Maintenance Man Hours MPM Maintenance Planning Manual P/N Part Number S/N Serial Number
3) ANNEX N.A.
J. PUBLICATIONS AFFECTED A109K2 MPM - Maintenance Planning Manual.
S.B. N°109K-075 ALERT DATE: March 8, 2021 Page 4 of 8 REVISION: / A109K2-01/15&27 MPM - Maintenance Planning Manual.
A109K2 MM - Maintenance Manual.
A109K2-01/15&27 MM - Maintenance Manual.
K. SOFTWARE ACCOMPLISHMENT SUMMARY N.A.
S.B. N°109K-075 ALERT DATE: March 8, 2021 REVISION: / Page 5 of 8
2. MATERIAL INFORMATION A. REQUIRED MATERIALS
1) PARTS Refer to IPC for the spares materials required to comply with the MM Paragraphs referenced in the accomplishment instructions.
2) CONSUMABLES The following consumable materials, or equivalent, are necessary to accomplish this Service Bulletin:
# SPEC./LHD CODE NUMBER DESCRIPTION Q.TY NOTE PART 1 MIL-PRF-81322 AeroShell Grease 22 (C009) AR (1) - Refer to AMDI for the consumable materials required to comply with the MM Paragraphs referenced in the accomplishment instructions.
3) LOGISTIC MATRIX N.A.
NOTE Item to procured as local supply.
B. SPECIAL TOOLS N.A.
C. INDUSTRY SUPPORT INFORMATION 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°109K-075 ALERT DATE: March 8, 2021 Page 6 of 8 REVISION: /
3. ACCOMPLISHMENT INSTRUCTIONS
GENERAL NOTES
a) Place an identification tag on all components that are re-usable, including the attaching hardware that has been removed to gain access to the inspection area and adequately protect them until their later re-use.
b) All lengths are in mm.
1. In accordance with MM Paragraph 00-20-1, prepare the helicopter on ground for a safe maintenance. Disconnect the battery, all electrical power sources and/or the external power supply.
2. With reference to Figure 1, gain access to the cockpit and move the rotor brake control lever fully aft (rotor brake applied).
3. With reference to Figure 1 Detail A, remove n.4 screws P/N MS35207-262 and n.4 washers P/N NAS1149D0332K that attach the rotor brake control quadrant to the structure and lower the control quadrant as far as the electrical wires will permit. Retain all the hardware for later reuse.
4. Perform the rotor brake control cable P/N 109-0506-17-109/-113 inspection as follow:
4.1 With reference to Figure 1 Detail A, carefully inspect the highlighted section of the rotor brake control cable with particular attention to the interface between the cable and the cyclindrical nipple.
4.2 Verify that the cyclindrical nipple is free to rotate.
4.3 Holding firmly the rotor brake control quadrant with one hand, move the rotor brake lever forward and backward. Verify that the control cable runs inside the sheath without jamming.
4.4 In case of any damage, wear, or jamming, in accordance with MM Paragraph 63-23-22 or 63-23-26 (only for A109K2-01/15&27), replace the control cable and proceed with next step.
5. Apply a small amount of grease Aeroshell 22 on the interface between cyclindrical nipple and rotor brake lever. Move the rotor brake lever forward and backward 5 times to allow the distribution of grease. Remove the excess with a clean cloth.
6. With reference to Figure 1 Detail A, reinstall the rotor brake control quadrant on the structure using the hardware previously removed.
7. Return the helicopter to a ready to flight condition and record for compliance with this Service Bulletin on the helicopter logbook.
S.B. N°109K-075 ALERT DATE: March 8, 2021 REVISION: / Page 7 of 8
8. Send the attached compliance form to the following mail box reporting any anomaly retrieved during the inspection:
engineering.support.lhd@leonardocompany.com As an alternative, gain access to My Communications section on Leonardo WebPortal and compile the “Service Bulletin Application Communication”.
Non cancellare mai questo segnalibro Non cancellare mai interruzione sezione
Figure 1 S.B. N°109K-075 ALERT DATE: March 8, 2021 Page 8 of 8 REVISION: /
FORWARD WL 1337.0 RIF MS35207-262 SCREW (REF) NAS1149D0332K WASHER (REF) TYP. 4 POS STA 1460.0 RIF
ROTOR BRAKE CONTROL
CABLE SECTION TO BE INSPECTED
ROTOR BRAKE
CONTROL LEVER (REF)
ROTOR BRAKE
CONTROL QUADRANT (REF)
DETAIL A (VIEW LOOKING RIGHT) (STRUCTURE AND SYSTEMS ARE PARTIALLY OMITTED
FOR BETTER CLARITY PURPOSE)
DETAIL A
Remarks:
Information:
SERVICE BULLETIN 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.