# Leonardo Alert Service Bulletin 109S-116: No revision named - Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2024-2425, the docket of AD 2025-07-07. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Leonardo Alert Service Bulletin 109S-116](https://openairdocs.org/service-documents/leonardo/109s-116.md) - Title as filed: Leonardo Alert Service Bulletin 109S-116 - Pages: 12 - PDF: https://openairdocs.org/files/sha256/c3/5b/c35bd314f3ff02fc858464b7cb8531452c691b48b598f75ab418151972cc6966 - Page: https://openairdocs.org/service-documents/leonardo/109s-116/file/c35bd314f3ff ## Text Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Pa ge 1 of 11 N° 109S-116 DA TE: August 2, 2023 REV. : / - March 15, 2017 TITLE ATA 62 – INSPECTION AND REPLACEMENT OF MAIN ROTOR BLADE TIP CAP REVISION LOG First 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 ### Page 2 S.B. N°109S-116 ALERT DATE: August 2, 2023 Page 2 of 11 REVISION: / 1. PLANNING INFORMATION A. EFFECTIVITY NOTE Main Rotor Blade P/N 709-0104-01-111 with a S/N listed in Table 1 kept at stock or removed from the helicopter after the issue of this Service Bulletin must apply Part III before reinstallation on the helicopter. Part I and II All Main Rotor Blade P/N 709-0104-01-111 with a S/N listed in Table 1 installed on A109S helicopters. NOTE Main Rotor Blade P/N 709-0104-01-111 with a S/N listed in Table 1 that applied Part III is no longer affected by this Service Bulletin. Part III All Main Rotor Blade P/N 709-0104-01-111 with a S/N listed in Table 1. V486 N95 V84 N72 1138 V434 Table 1 B. COMPLIANCE Part I Within and not later than 25 flight hours after the issue of this Service Bulletin and subsequently every 25 flight hours. Part II Within and not later than 300 flight hours after the issue of this Service Bulletin. Part III At next repair or overhaul. C. CONCURRENT REQUIREMENTS N.A. D. REASON ### Page 3 S.B. N°109S-116 ALERT DATE: August 2, 2023 REVISION: / Page 3 of 11 A quality escape affecting a defined batch of Main Rotor Blades (MRB) has been identified. The escape identified affects a list of MRB P/N 709-0104-01-111 that had the Tip Cap replaced following a procedure and using tools not in accordance with LH Technical Publication. This non conformity could lead to premature debonding of the Tip Cap and ultimately to its detachment. This Service Bulletin mandate a repetitive inspection (tapping check) (Part I) to be performed until the Main Rotor Blades can be replaced (Part II). The Main Rotor Blades will then return to an Authorized Blade Repair Centre for Tip Cap replacement (Part III). E. DESCRIPTION This Service Bulletin is issued in order to provide the necessary instruction to perform a repetitive inspection of the tip cap installed on a defined batch of Main Rotor Blades P/N 709-0104-01-111 to detect potential debonding. 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 with Local Aviation Authority. 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 MMH are deemed necessary. Part I: approximately 1 (one); Part II: approximately 4 (four); Part III: N.A. MMH are based on hands-on time and can change with helicopter configuration, personnel and facilities available. MMH are not comprehensive of the overall hours necessary to get access to work areas and to remove all the equipment that interferes with the application of the prescribed instructions. ### Page 4 S.B. N°109S-116 ALERT DATE: August 2, 2023 Page 4 of 11 REVISION: / H. WEIGHT AND BALANCE N.A. I. REFERENCES I.1 PUBLICATIONS Following Data Modules refer to AMP: DATA MODULE DESCRIPTION PART DM01 0B-A-00-20-00-00A-120A-A Helicopter safety - Pre- operation I, II DM02 0B-A-62-11-00-00A-281A-A Main rotor blade installation - Scheduled inspection I DM03 0B-A-62-11-01-00A-520A-A Main rotor blade - Remove procedure II DM04 0B-A-62-11-01-00A-720A-A Main rotor blade - Install procedure II Following Data Modules refer to CSPP: DATA MODULE DESCRIPTION PART DM05 CSPP-A-60-30-02-01A-913A-D Bonded components (Tap test) - General maintenance procedure I Following Data Modules refer to CR&OP: DATA MODULE DESCRIPTION PART DM06 3C-A-62-11-01-06B-921A-C Main rotor blade - Tip cap - Replacement (remove and install a new item) III I.2 ACRONYMS & ABBREVIATIONS AMDI Aircraft Material Data Information AMP Aircraft Maintenance Publication AR As Required CSPP Common Standard Practices Publication CR&OP Component Repair And Overhaul Publication DM Data Module DOA Design Organization Approval EASA European Union Aviation Safety Agency IPD Illustrated Parts Data ITEP Illustrated Tool And Equipment Publication LHD Leonardo Helicopters Division MMH Maintenance Man Hours ### Page 5 S.B. N°109S-116 ALERT DATE: August 2, 2023 REVISION: / Page 5 of 11 MRB Main Rotor Blade N.A. Not Applicable P/N Part Number SB Service Bulletin S/N Serial Number I.3 ANNEX N.A. J. PUBLICATIONS AFFECTED N.A. K. SOFTWARE ACCOMPLISHMENT SUMMARY N.A. ### Page 6 S.B. N°109S-116 ALERT DATE: August 2, 2023 Page 6 of 11 REVISION: / 2. MATERIAL INFORMATION A. REQUIRED MATERIALS A.1 PARTS PART I N.A. PART II # P/N ALTERNATIVE P/N DESCRIPTION Q.TY LVL NOTE LOG P/N 1 709-0104-01-111 Main Rotor Blade AR . - PART III # P/N ALTERNATIVE P/N DESCRIPTION Q.TY LVL NOTE LOG P/N 2 709-0104-10-109 Tip Cap AR . - Refer also to IPD for the spares materials required to comply with the AMP DMs referenced in the accomplishment instructions. A.2 CONSUMABLES Refer also to AMDI for the consumable materials required to comply with the AMP DMs referenced in the accomplishment instructions. A.3 LOGISTIC MATRIX N.A. NOTES (1) Item to be procured as local supply. B. SPECIAL TOOLS The following special tools, or equivalent, are necessary to accomplish this Service Bulletin: # P/N DESCRIPTION Q.TY NOTE PART 3 109-3101-58-1 or 109-3101-58-2 or equivalent Hammer 1 I Refer also to ITEP for the special tools required to comply with the AMP DMs referenced in the accomplishment instructions. SPECIAL TOOLS NOTES N.A. ### Page 7 S.B. N°109S-116 ALERT DATE: August 2, 2023 REVISION: / Page 7 of 11 C. INDUSTRY SUPPORT INFORMATION N.A. ### Page 8 S.B. N°109S-116 ALERT DATE: August 2, 2023 Page 8 of 11 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 modification area and adequately protect them until their later re- use. b) All lengths are in mm. PART I 1. In accordance with AMP DM 0B-A-00-20-00-00A-120A-A, prepare the helicopter on ground for a safe maintenance. Disconnect the battery, all electrical power sources and/or the external power supply. 2. Gain access to the affected Main Rotor Blade. NOTE The hammer tapping inspection must be performed only by appropriately qualified personnel in accordance with the national aviation regulation. 3. In accordance with CSPP DM CSPP-A-60-30-02-01A-91 3A-D and with reference to Figure 1, perform a tapping test on Main Rotor Blade Tip Cap. 3.1 In case no debonding is found, proceed with step 4. 3.2 In case debonding is found, check its dimensions with AMP DM 0B-A-62-11-00-00A-281A-A (debonding limits). 3.2.1 In case debonding is found within acceptable limits, proceed with step 4. 3.2.2 In case debonding is found outside the acceptable limits, apply Part II of this Service Bulletin before next flight and inform LH. 4. Return the helicopter to flight configuration and record for compliance with Part I of this Service Bulletin on the helicopter logbook. 5. Gain access to My Communications section on Leonardo WebPortal and compile the “Service Bulletin Application Communication”. As an alternative, send the attached compliance form to the following mail box: engineering.support.lhd@leonardo.com and (for North, Central and South America) also to: AWPC.Engineering.Support@leonardocompany.us ### Page 9 S.B. N°109S-116 ALERT DATE: August 2, 2023 REVISION: / Page 9 of 11 PART II 1. In accordance with AMP DM 0B-A-00-20-00-00A-120A-A, prepare the helicopter on ground for a safe maintenance. Disconnect the battery, all electrical power sources and/or the external power supply. 2. In accordance with AMP DM 0B-A-62-11-01-00A-520A-A, remove from the helicopter the affected Main Rotor Blade and send it to an authorized blade repair center for application of Part III of this Service Bulletin. 3. In accordance with AMP DM 0B-A-62-11-01-00A-720A-A, install on the helicopter a serviceable Main Rotor Blade. 4. Return the helicopter to flight configuration and record for compliance with Part II of this Service Bulletin on the helicopter logbook. 5. Gain access to My Communications section on Leonardo WebPortal and compile the “Service Bulletin Application Communication”. As an alternative, send the attached compliance form to the following mail box: engineering.support.lhd@leonardo.com and (for North, Central and South America) also to: AWPC.Engineering.Support@leonardocompany.us ### Page 10 S.B. N°109S-116 ALERT DATE: August 2, 2023 Page 10 of 11 REVISION: / PART III NOTE This Part MUST be performed only by authorized blade repair center. 1. In accordance with CR&OP DM 3C-A-62-11-01-06B-921 A-C, replace Main Rotor Blade Tip Cap. 2. Record for compliance with Part III of this Service Bulletin on the component logcard. 3. Gain access to My Communications section on Leonardo WebPortal and compile the “Service Bulletin Application Communication”. As an alternative, send the attached compliance form to the following mail box: engineering.support.lhd@leonardo.com and (for North, Central and South America) also to: AWPC.Engineering.Support@leonardocompany.us  Non cancellare mai questo segnalibro Non cancellare mai interruzione sezione  ### Page 11 (OCR) K LEONARDO HELICOPTERS STA STA STA 5200 5280 5630 25 mm _ TIP CAP EROSION SHIELD 115 mm TOP SURFACE 80 mm TIF CAP Tapping hammer area TRAILING EDGE BOTTOM SURFACE TIP CAP EROSION SHIELD AREA A (Between Tip Cap and Blade body) AREA B (Between Tip Cap and Blade body) Figure 1 S.B. N°109S-116 ALERT DATE: August 2, 2023 REVISION: / Page 11 of 11 ### Page 12 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. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.