ALERT SERVICE BULLETIN - Tail Rotor Drive - Shaft - Improved geometry of the tail boom rear drive shaft

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ASB EC130-65-11-0002 Issue 001 2024-07-12 Issue 002 2024-10-01 ALERT SERVICE BULLETIN TITLE: Tail Rotor Drive - Shaft - Improved geometry of the tail boom rear drive shaft SB Type: Corrective measure APPLICABILITY Model: EC130 Version: T2 Component affected: 350A34-5020-00 Helicopters POST MOD: 079809 Helicopters PRE MOD: 0790006 COMPLIANCE: MANDATORY Comply with this ALERT SERVICE BULLETIN within 600FH or 24 months, whichever comes first. Refer to the issue date on the page footer. REASON FOR REVISION REASON FOR ISSUE 002 The objective of issue 002 of this ALERT SERVICE BULLETIN is: – To update the Helicopter PRE MOD applicability – To cancel the reference to the DN in paragraph 8 as its content was integrated in the technical documentation. ADDITIONAL WORK No additional work is required by this revision. ASB EC130-65-11-0002 Page 1/11 Export Control: US_EC_NoUScontent - FR_EC_NotListed ASB EC130-65-11-0002 Issue 001 2024-07-12 Issue 002 2024-10-01 GENERAL EVALUATION Evaluation table Perform once YES Recurring accom plishment NO GENERAL ILLUSTRATION FWD ASB EC130-65-11-0002 Page 2/11 Export Control: US_EC_NoUScontent - FR_EC_NotListed ASB EC130-65-11-0002 Issue 001 2024-07-12 Issue 002 2024-10-01 PLANNING INFORMATION 1. REASON Several in-service incidents were reported to AH concerning degradation of the intermediate tail drive shafts support on the H130 equipped with a new tail boom post ECP 079809 featuring a new tail drive shaft assembly with a single bearing. The damage consists of loose/failed rivets on the bearing support, in some limited cases occurrence of cracks in the supporting structure and occasional wear of the splines in the connection between the two drive shafts. AH had initiated extensive investigations and identified the root cause of these events. As a corrective measure, the main objective of this ALERT SERVICE BULLETIN is to replace the current tail boom rear drive shaft by a new rear drive shaft with an improved geometry. The technical data or instructions contained in this ALERT SERVICE BULLETIN refer to the ECP EC07.90006. 2. DESCRIPTION This ALERT SERVICE BULLETIN provides the instruction to the replacement of the tail boom rear drive shaft. 3. CONFIGURATION DEFINITION Not applicable. 4. APPROVAL The technical content of this document is approved under the authority of the Design Organization Approval ref. EASA 21J.700. For helicopters operated outside the territories regulated by the EASA, the application of this document is subject to validation provided by the responsible aviation authority of the state of registry. 5. MANPOWER NOTE The purpose of Man Hours is to give Airbus Helicopters customers a guideline for maintenance scheduling. It is not a contractual information. ASB EC130-65-11-0002 Page 3/11 Export Control: US_EC_NoUScontent - FR_EC_NotListed ASB EC130-65-11-0002 Issue 001 2024-07-12 Issue 002 2024-10-01 Number of Persons Qualification Estimated Man Hours 2 Mechanical technician 2 h 6. WEIGHT AND BALANCE There is no change in weight and moment. 7. ELECTRICAL LOAD DATA Not applicable. 8. DOCUMENTATION AFFECTED – Aircraft Maintenance Manual (AMM) – Airworthiness Limitations Section (ALS) – Illustrated Part Catalog (IPC) – Master Servicing Manual (MSM) 9. MATERIAL INFORMATION 9.1. Price For information about the price of the modification kits and/or components, or for aid, contact the Airbus Helicopters Network Sales and Customer Relations Department. 9.2. Availability Contact the Sales and Customer Relations Department to know the delivery lead times. 9.3. Procurement Send an order for the necessary quantities to the Airbus Helicopters Network Sales Department. You can send an order for the consumables from the AirbusWorld Marketplace through e-ordering. If you cannot get access to e-ordering, please contact your Logistic Focal Point. ASB EC130-65-11-0002 Page 4/11 Export Control: US_EC_NoUScontent - FR_EC_NotListed ASB EC130-65-11-0002 Issue 001 2024-07-12 Issue 002 2024-10-01 9.4. Mixability This Service Bulletin has no effect on the mixability. 9.5. LIST OF NEW MATERIALS Individual Spares List Item Designation Reference MFC QTY 1 Shaft assy, aft 350A34-5020-01 F0210 1 Consumables, Materials and Expendables Designation Reference MFC QTY Grease G-355 CM116 - As required Special Tools Item Designation Reference MFC QTY None 9.6. LIST OF EXISTING PARTS REMOVED SPARE PARTS Old Reference Designation 350A34-5020-00 Shaft assy, aft 10. ACCOMPLISHMENT INSTRUCTION Comply with the accomplishment procedure . 65-11-0002, 933 ASB EC130-65-11-0002 Page 5/11 Export Control: US_EC_NoUScontent - FR_EC_NotListed ASB EC130-65-11-0002 Issue 001 2024-07-12 Issue 002 2024-10-01 11. ADDITIONAL INFORMATION Not applicable. End of section ASB EC130-65-11-0002 Page 6/11 Export Control: US_EC_NoUScontent - FR_EC_NotListed ASB EC130-65-11-0002 Issue 001 2024-07-12 Issue 002 2024-10-01 ACCOMPLISHMENT PROCEDURE 65-11-0002, 933 1. APPLICABILITY Model: EC130 Version: T2 Helicopters POST MOD: 079809 Helicopters PRE MOD: 0790006 2. PRELIMINARY REQUIREMENTS 2.1. Applicable Documents – General Instructions - Electrical Systems - Electrical Power Supply System AMM 24-00-00, 3-1 – Removal - Rear section - Tail Rotor Drive Line POST MOD 079809 AMM 65-11-01,4-3 – Installation - Rear section - Tail Rotor Drive Line POST MOD 079809 AMM 65-11-01,4-4 – Use of greases - Miscellaneous products used on helicopters MTC 20-01-01-301 – Helicopter parked in a repair shop - Safety instructions MTC 20-07-02-201 2.2. Set up – Park the helicopter in a hangar. Refer to MTC 20-07-02-201 – Disconnect all the electrical power supplies. Refer to AMM 24-00-00, 3-1 – Install the applicable access equipment. – Remove and/or open all applicable cowlings, panels, doors and other items of equipment to get access to the different work areas. 2.3. Special Tools None 2.4. Consumables, Materials and Expendables 65-11-0002, 933 Page 7/11