# Leonardo Alert Service Bulletin 109SP-143: Revision A - Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2022-0008, the docket of AD 2022-06-19. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Leonardo Alert Service Bulletin 109SP-143](https://openairdocs.org/service-documents/leonardo/109sp-143.md) - Title as filed: Leonardo Helicopters ASB 109SP-143 Rev A (reduced size PDF) - Pages: 22 - PDF: https://openairdocs.org/files/sha256/e3/a3/e3a3bcbd7b8d32ad4280fdb82d8c9d0d2dd07d6af4f813407f6d0172b04fc059 - Page: https://openairdocs.org/service-documents/leonardo/109sp-143/file/e3a3bcbd7b8d ## 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 N° 10 9SP-143 DATE : February 22, 2021 REV. : A - July 22, 2021 Page 1 of 21 TITLE ATA 25 - INSPECTION OF HOIST SUPPORT ASSEMBLY P/N 109-0705V04-301 REVISION LOG Helicopters which are already complying with previous issue of this Service Bulletin must not change their current scheduling for recurring inspection. Revision A is issued in order to update the Effectivity, Compliance and Accomplishment Instructions paragraphs. Revision bars identify changes. 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°109SP-143 ALERT DATE: February 22, 2021 Page 2 of 21 REVISION: A - July 22, 2021 1. PLANNING INFORMATION NOTE Goodrich Alert Service Bulletin N°44316-505-01 Rev.2 is attached in Annex A to add information about accomplishment instruction. In case any discrepancy between Goodrich Service Bulletin and this SB is found, the instructions reported in this bulletin must be followed. A. EFFECTIVITY All the Hoist Support Assembly P/N 109-0705V04-301 (vendor P/N 44316-505) in stalled on AW109SP helicopters. B. COMPLIANCE NOTE Hoist Support Assembly manufacturing date is stamped on the hoist support assembly nameplate.  For Hoist Support Assemblies with less than 12 months from the manufacturing d ate: Whichever occurs later, (A) or (B): (A) Within and not later 12 months from the manufacturing date, and subsequently each 12 months; (B) Within 50 FH or 3 months, whichever occurs first after the issue of Rev. A of this Service Bulletin, and subsequently each 12 months.  For Hoist Support Assemblies with more than 12 months from the manufacturing date: Within 50 FH or 3 months, whichever occurs first after the issue of Rev. A of this Service Bulletin, and subsequently each 12 months. C. CONCURRENT REQUIREMENTS N.A. D. REASON This Service Bulletin is issued in order to provide the necessary instruction to perform an inspection of the internal surface of Hoist Support Assembly P/N 109-0705V04-301 (vendor P/N 44316-505). ### Page 3 S.B . N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 3 of 21 E. DESCRIPTION Some cases of corrosion have been found inside the Hoist Support Assembly affecting bo th the huck bolt heads and the support surfaces (See Annex A for reference). While the investigation in determining the root cause and the corrective action is ongoing, LHD decided, as a precautionary measure to issue this SB to introduce a repetitive inspection of the potentially affected parts. It is required to remove the end caps of the hoist support assembly and check the internal side for corrosion. If anomalies are found, instructions are provided to take pictures that will be used to determine the serviceability of the part. Revision A of this Service Bulletin is issued to modify the effectivity of the SB, accounting for new parts and to introduce some acceptability criteria of the Hoist Support Assembly corrosion. In addition, definition of serviceable part is provided as well. 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 the aircraft, for any adaptation necessary before incorporation of the present Service Bulletin. G. MANPOWER To comply with this Service Bulletin 1,25 (one and a quarter) MMH is deemed ne cessary. MMH are based on hands-on time and can change with personnel and facilities available. H. WEIGHT AND BALANCE N.A. ### Page 4 S.B . N°109SP-143 ALERT DATE: February 22, 2021 Page 4 of 21 REVISION: A - July 22, 2021 I. REFERENCES 1) PUBLICATIONS DATA MODULE DESCRIPTION PART DM01 0B-A-00-20-00-00A-120A-A Helicopter safety - Pre-operation - Goodrich CMM 25-00-36-1 Rescue Hoist Assembly - 2) ACRONYMS AMDI Aircraft Material Data Information AM P Aircraft Maintenance Publication AMPI Aircraft Maintenance Planning Information CMM Component Maintenance Manual DM Data Module DOA Design Organization Approval EASA European Aviation Safety Agency IPD Illustrated Parts Data Publication LHD Leonardo Helicopters Division MMH Maintenance Man Hours P/N Part Number 3) ANNEX Annex A Goodrich Alert Service Bulletin n°44316-505-01 Rev.2 J. PUBLICATIONS AFFECTED 0B-B-AMPI-00-P - AW109SP Aircraft Maintenance Planning Information. K. SOFTWARE ACCOMPLISHMENT SUMMARY N.A. ### Page 5 S.B . N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 5 of 21 2. MATERIAL INFORMATION A. REQUIRED MATERIALS 1) PARTS Refer to Goodrich Alert SB n°44316-505-01 Rev.2 attached in Annex A. 2) CONSUMABLES Ref er to Goodrich Alert SB n°44316-505-01 Rev.2 attached in Annex A. Refer also to AW109SP AMDI for the consumable materials required to comply with the AMP DMs referenced in the accomplishment instructions. 3) LOGISTIC MATRIX N.A . B. SPECIAL TOOLS Refer to ITEP for the special tools required to comply with the AMP DMs referenced in th e accomplishment instructions. C. INDUSTRY SUPPORT INFORMATION To receive replacement component and tool in support of this Service Bulletin, the Cu stomer should e-mail a free of charge purchase order to GHW@collins.com. The purchase order should be made to Collins Aerospace and make reference to Service Bulletin 109SP-143 (last revision), with instructions on the location where the replacement has to be shipped. Collins Aerospace will evaluate the request and will provide specific information. NOTE: Leonardo Helicopters recommends that operators place their order as soon as possible. ### Page 6 S.B . N°109SP-143 ALERT DATE: February 22, 2021 Page 6 of 21 REVISION: A - July 22, 2021 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. 1. In accordance with DM 0B-A-00-20-00-00A-120A-A, pre pare the helicopter on ground for a safe maintenance. 2. In accordance with Goodrich ASB n°44316-505-01 Rev.2 in Annex A, perform a detailed inspection of the Hoist Support Assembly P/N 109-0705V04-301 (vendor P/N 44316- 505). 3. Send pictures taken during execution of step 2 to Leonardo and Goodrich at the following email addresses: engineering.support.lhd@leonardocompany.com; GHW@collins.com. Pictures must be enclosed with reference to the present SB, date of inspection, S/N of Hoist Support Assembly, and if installed on aircraft, S/N of aircraft. NOTE A se rviceable part is:  A part that in the last 12 months has performed the inspection required at point 2 of this SB without any sign of corrosion.  A part that in the last 12 months has performed the inspection required at point 2 of this SB retrieving signs of corrosion but has been addressed as serviceable by the design authority.  A part that has less than 12 months since the manufacturing date as reported on the relevant nameplate. 4. In case no signs of corrosion are retrieved, procee d with step 5, otherwise contact Leonardo Helicopters and Goodrich at the email addresses detailed at point 3 to evaluate part serviceability. ### Page 7 S.B . N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 7 of 21 If necessary, in accordance with Goodrich CMM 25-00-36 -11 (available at Goodrich TechPubs Customer Portal: www.customers.collinsaerospace.com), replace the boom with a serviceable one. 5. Return the helicopter to a ready to flight condition and record for compliance with this Service Bulletin on the helicopter logbook. 6. Send the attached compliance form to the following mail box: engineering.support.lhd@leonardocompany.com As an alternative, gain access to My Communications section on Leonardo WebPortal and compile the “Service Bulletin Application Communication”.  No n cancellare mai questo segnalibro Non cancellare mai interruzione sezione  ### Page 8 ANNEX A S.B. N°109SP-143 ALERT DATE: February 22, 2021 Page 8 of 21 REVISION: A - July 22, 2021 ANNEX A GOODRICH AL ERT SERVICE BULLETIN N°44316-505-01 REV.2 ### Page 9 (OCR) LEONARDO ANNEX A HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability TO: HOLDERS OF SERVICE BULLETIN 44316-505-01 REVISION 1, DATED FEB 05/21 COVERING THE HOIST SUPPORT ASSEMBLY P/N 44316-505. REVISION NO. 2, DATED JUL 09/21 HIGHLIGHTS Pages which have been revised are outlined below together with the highlights of the revision. Please destroy obsolete pages in your copy of this bulletin and replace them with Revision No. 2 pages dated Jul 09/21. PAGE NO DESCRIPTION OF CHANGE EFFECTIVITY All Updated Revision Number and Date All 1 Updated Paragraph 1.A All Updated Paragraph 1.D All Added Step 4 to Paragraph 2.C All 10 Revised Figure 4 - Alert Service Bulletin Label All Initial Date: Feb 05/21 44316-505-01 Highlights-1 Jul 09/21 Warning - This information contains technical data subject to EAR ECCN: EAR9B Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 9 of 21 ### Page 10 (OCR) ANNEX A * LEONARDO HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability THIS PAGE INTENTIONALLY LEFT BLANK Initial Date: Feb 05/21 44316-505-01 Highlights-2 Jul 09/21 Waming - This information contains technical data subject to EAR ECCN: EAR Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 Page 10 of 21 REVISION: A - July 22, 2021 ### Page 11 (OCR) ANNEX A * LEONARDO HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability 1. Planning Information A. Effectivity This Alert Service Bulletin (ASB) and the information it contains is applicable to the Hoist Support Assembly, P/N 44316-505. These Hoist Support Assemblies are manufactured by Goodrich Corporation, Brea, California (CA). B. Reason The Hoist Support Assembly (P/N 44316-505) used on the Helicopter A109 have the possibility of corrosion on the interior surface of the Boom Torque Tube (P/N 44316-526) of the Boom Assembly (P/N 44316-515) due to liquid intrusion. C. Description This Alert Service Bulletin identifies the Hoist Support Assembly (P/N 44316-505) that require inspection of its Boom Assembly (P/N 44316-515). Instructions are provided to examine and photograph the Boom Assembly (P/N 44316-515) for the existence of corrosion on the exterior and interior surfaces of the Boom Torque Tube (P/N 44316-526) in order to determine the continued airworthiness of the Hoist Support Assembly (P/N 44316-505). Instructions are also provided to upload the photographs to Goodrich. This helps Goodrich to determine the scope of the issue, identity any variables that may be contributors to the issue and whether or not the Boom Assembly should be removed from service. Based on this determination, Goodrich may contact the operator to provide direction on action to be taken on that particular Boom Assembly. Instructions in this Service Bulletin shall be applied to prevent corrosion to the Boom Torque Tube (P/N 44316-526) or to prevent further corrosion if there is preexisting corrosion. D. Compliance Goodrich Corporation requires the performance of this Alert Service Bulletin within 90 days or 50 FH, which ever occurs first, of release of this ASB with recurring inspections on annual basis until a terminating action is provided. This Alert Service Bulletin may be performed by the aircraft operator or a maintenance provider delegated by the operator. E. Approval This Service Bulletin contains no modification information that revises the approved configuration. The work performed is in compliance with the existing FAA/EASA approved configuration. Initial Date: Feb 05/21 44316-505-01 Page 1 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR ECCN: EARB Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 11 of 21 ### Page 12 (OCR) LEONARDO ANNEX A HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability F. Manpower (1) The estimated amount of labor to accomplish the instructions of this Alert Service Bulletin for one Hoist Support Assembly as follows: Table 1. Estimated Time TASK TIME (MIN) Removal of Tube Plugs from Boom Torque Tube 15 Perform visual inspection of Boom Torque Tube for evidence of 15 corrosion Photograph and upload files 15 Clean corrosion from interior of Boom Tube if necessary 15 Installation of new Tube Plugs on Boom Torque Tube 15 NOTE: Times do not include curing time for adhesives. Refer to manufacturer's instruction for recommended curing times. (2) The inspection described in this Alert Service Bulletin may be performed by the operator or other authorized repair facility. G. Material - Cost and Availability (1) The following components are required to accomplish this Alert Service Bulletin. Table 2. Required Components NEW OR INSTRUCTIONS/ MODIFIED P/N DESCRIPTION QTY OLD P/N DISPOSITION ASBL44316-505-01* Alert Service 1 N/A Install Alert Service Bulletin Bulletin Label Label. See Figure 4. 44316-554 Tube Plug 2 44316-554 Discard and replace the Tube Plugs as shown in Figure 3. *Not supplied. Create label per Paragraph 2.F Initial Date: Feb 05/21 44316-505-01 Page 2 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR EON: EAR99 Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 Page 12 of 21 REVISION: A - July 22, 2021 ### Page 13 (OCR) LEONARDO ANNEX A HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability (2) The following materials are required to accomplish the instructions of this Alert Service Bulletin. Table 3. As-Required Materials PART NUMBER/ DESCRIPTION SPECIFICATION QTY SOURCE Acrylic Adhesive DP810 or Equivalent AR Commercially Available Silicone Sealant, General Dow RTV-738 or Equivalent AR Commercially Available Purpose Isopropyl Alcohol Fed Spec TT-I-735 AR Commercially Available Lint-free Cloth A-A-59323, Type II AR Commercially Available Corrosion Preventative ACF-50 TFFC or PX24 AR Commercially Available Compound (3) Material Availability (a) Replacement Tube Plugs (P/N 44316-554) provided free of charge by Goodrich Corporation. (b) As-required materials must be supplied by the operator or repair facility performing the Service Bulletin. (4) Warranted Items Cost (a) Replaced parts under this Alert Service Bulletin will carry a one (1) year warranty after installation. Initial Date: Feb 05/21 44316-505-01 Page 3 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR ECCN: EAR9B Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 13 of 21 ### Page 14 (OCR) ANNEX A * LEONARDO HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability H. Tooling - Price and Availability None. I. Weight and Balance Not affected. J. Electrical Load Data Not affected. K. Software Accomplishment Summary None. L. Reference Goodrich Corporation Organizational Component Maintenance Manual 25-00-36-1. Leonardo Helicopters SB 109SP-143 M. Other Publications Affected None. Initial Date: Feb 05/21 44316-505-01 Page 4 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR EON: EAR99 Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 Page 14 of 21 REVISION: A - July 22, 2021 ### Page 15 (OCR) LEONARDO ANNEX A HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability 2. Accomplishment Instructions A. External Surface Inspection (1) Perform a visual inspection on the exterior surface of the Boom Assembly (P/N 44316-515) for obvious cracks and corrosion. If cracks are observed, remove the Boom Assembly from service immediately and contact Goodrich customer service to initiate a RMA. (2) If there is only corrosion Boom Assembly (P/N 44316-515), photograph the corrosion before and after cleaning the corrosion with a Lint-free Cloth soaked in Isopropyl Alcohol. Do not scrub with an abrasive pad or cloth. (3) Photograph files shall be identified and uploaded per instructions in Paragraph 2.G B. Removal of Tube Plugs (1) Use a Non-metallic Prying Tool to remove the Tube Plugs (P/N 44316-554) from both ends of Boom Torque Tube (P/N 44316-526). See Figure 1 for part identification. Take care not to gouge or scratch the sealing surface under the Tube Plugs. C. Internal Surface Inspection (1) Use a Flash Light or Boroscope to do the inspection of the interior surface of the Boom Torque Tube (P/N 44316-526) and on the Blind Bolt Fastener (P/N MS90354-0806) for the evidence of corrosion. Pay specific attention to the Blind Bolt Fasteners to check for corrosion. (2) Using a Digital Camera, photograph the interior surface of the Boom Torque Tube (P/N 44316-526) from both forward and aft ends of the Boom Torque Tube. At minimum, provide photographs of at least two interior views, one from each end of the Boom Torque Tube, as depicted in Figure 2. (3) Photograph files shall be identified and uploaded per instructions in Paragraph 2.G (4) In case corrosion is found, Goodrich Corporation will address the serviceability of the part from the photographs provided and contact the operator to notify the result of the evaluation on the Boom Assembly (P/N 44316-515). The Boom Assembly may remain in service for a year following completion of this Service Bulletin unless otherwise directed by Goodrich Corporation or Leonardo Helicopters. Initial Date: Feb 05/21 44316-505-01 Page 5 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR ECCN: EAR9B Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 15 of 21 ### Page 16 (OCR) LEONARDO ANNEX A HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability D. Internal Surface Cleaning (1) If there is no evidence of corrosion on the interior surface of the Boom Torque Tube (P/N 44316-526) or on the Blind Bolt Fasteners (P/N MS90354-0806), spray the interior surface with Corrosion Preventative Compound (ACF-50 TFFC or PX24) locally around the heads of Blind Bolt Fasteners from forward and aft ends of the Boom Torque Tube, and then install new Tube Plugs (P/N 44316-554) on both ends of the Boom Torque Tube per instructions in Paragraph 2.E (2) If there is superficial corrosion on the interior of the Boom Torque Tube (P/N 44316-526) or on the Blind Bolt Fasteners (P/N MS90354-0806), clean the corrosion with a clean Lint-free Cloth soaked in Isopropyl Alcohol. Do not scratch off the corrosion preventative surface coating when cleaning. After cleaning, spray the interior surface with Corrosion Preventative Compound (ACF-50 TFFC or PX24) and then install new Tube Plugs (P/N 44316-554) on both ends of the Boom Torque Tube per instructions in Paragraph 2.E BLIND BOLT FASTENER (P/N MS90354-0806) (20 PLACES) TUBE PLUG (P/N 44316-554) TUBE PLUG (P/N 44316-554) BOOM TORQUE TUBE (P/N 44316-526) Figure 1. Inspection of Boom Assembly (P/N 44316-515) Initial Date: Feb 05/21 44316-505-01 Page 6 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR EON: EAR99 Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 Page 16 of 21 REVISION: A - July 22, 2021 ### Page 17 (OCR) ANNEX A A LEONARDO HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability Figure 2. Sample Interior Views of Boom Assembly Initial Date: Feb 05/21 44316-505-01 Page 7 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR ECCN: EAR98 Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 17 of 21 ### Page 18 (OCR) LEONARDO ANNEX A HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability E. Install Tube Plugs (P/N 44316-554) on the ends of the Boom Torque Tube (P/N 44316-526) as follows: (1) Discard the old Tube Plugs (P/N 44316-554). (2) Prior to installing new Tube Plugs (P/N 44316-554), spray the interior surface of the Boom Torque Tube (P/N 44316-526) with Corrosion Preventative Compound (ACF-50 TFFC or PX24) locally around the heads of Blind Bolt Fasteners from forward and aft ends of the Boom Torque Tube. WARNING: ISOPROPYL ALCOHOL IS TOXIC AND FLAMMABLE. USE IN A WELL VENTILATED AREA. AVOID BREATHING FUMES. KEEP AWAY FROM OPEN FLAME AND OTHER IGNITION SOURCES. AVOID PROLONGED SKIN CONTACT. (3) Prior to installing the new Tube Plugs (P/N 44316-554), prepare the gluing surfaces by roughening the surfaces with a scotch brite or equivalent non-metallic abrasive pad and clean the surfaces with a mild degreaser such as Isopropyl Alcohol. WARNING: ACRYLIC ADHESIVE AND SILICONE SEALANT ARE TOXIC AND FLAMMABLE. USE IN A WELL VENTILATED AREA. AVOID BREATHING FUMES. KEEP AWAY FROM OPEN FLAME AND OTHER IGNITION SOURCES. AVOID PROLONGED SKIN CONTACT. (4) Prepare an amount of Acrylic Adhesive (P/N DP810) as required per manufacturer's instructions. (5) Apply Acrylic Adhesive (P/N DP810) to the Tube Plugs (P/N 44316-554) as shown in Figure 3, Inset A. Make sure that the Acrylic Adhesive is applied to both groove locations. (6) Apply a bead of Silicone Sealant along the Boom Lower Fittings and Boom Torque Tube joints. See Figure 3, Inset A Install the Tube Plugs (P/N 44316-554) on both ends of the Boom Torque Tube (P/N 44316-526). (8) Before returning to service, cure the Acrylic Adhesive (P/N DP810) and Silicone Sealant as directed by the manufacturer instructions. (9) Make sure that the Boom Torque Tube (P/N 44316-526) is sealed liquid-tight when adhesive and sealant are fully cured. Initial Date: Feb 05/21 44316-505-01 Page 8 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR EON: EAR99 Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 Page 18 of 21 REVISION: A - July 22, 2021 ### Page 19 (OCR) LEONARDO ANNEX A HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability (2 PLACES) /2 1(2 PLACES) (2 PLACES) /2 TUBE PLUG (P/N 44316-554) (2 PLACES) BOOM TORQUE TUBE BLIND BOLT FASTENER (P/N 44316-526) (P/N MS90354-0806) BOOM LOWER FITTINGS BOOM ASSEMBLY (P/N 44316-515) NOTES: APPLY SEALANT (P/N RTV-738) AROUND JOINT EDGE. - APPLY ADHESIVE (PIN DP810) TO TUBE PLUGS (P/N 44316-554 ND INSTALL AS SHOWN IN DETAIL IA" Figure 3. Installation of Tube Plug (P/N 44316-554) Initial Date: Feb 05/21 44316-505-01 Page 9 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR ECCN: EAR98 Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 19 of 21 ### Page 20 (OCR) ANNEX A * LEONARDO HELICOPTERS GOODRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability F. Service Bulletin Labeling (1) Create and mark the Alert Service Bulletin Label (P/N ASBL44316-505-01) with current date and attach to the Hoist Support Assembly (P/N 44316-505), below the identification plate. See Figure 4 for the label details. 1.50 ‡ 0.03 inch (38.1 + 0.76 mm) ASB44316-505-01 0.50 + 0.03 inch (12.7 + 0.76 mm) DATE: L 4X R 0.06 ‡ 0.03 inch (1.5 ₺ 0.76 mm) NOTE: MAKE FROM 0.007 INCH THICK ACRYLATE (MATTE BLACK ON WHITE) WITH ADHESIVE BACK [RECOMMEND MAKE FROM 3M #7847 MATTE BLACK/WHITE ACRYLATE (STOCK # 70-0004-3110-9)] MAY BE PRODUCED USING LASER MARKING. NOTE: CHARACTERS ARE TO BE IN CONTRASTING COLOR. CHARACTER HEIGHTS AND LOCATIONS TO BE APPROXIMATELY AS SHOWN. BOX FOR DATE TO BE SOLID FOR HAND WRITTEN DATE AT TIME OF INSTALLATION Figure 4. Alert Service Bulletin Label Initial Date: Feb 05/21 44316-505-01 Page 10 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR EON: EAR99 Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 Page 20 of 21 REVISION: A - July 22, 2021 ### Page 21 (OCR) : LEONARDO ANNEX A HELICOPTERS GOoDRICH ALERT SERVICE BULLETIN Equipment/Furnishings - Boom Assembly Inspection - Safety and Reliability G. Photograph Sharing (1) Name the photograph files so that they include the serial number of the Hoist Support Assembly (For Example: SERNO 00041_1, SERNO 00041_2). (2) Send the photographs, with Subject line "ASB 44316-505-01 Photographs" to GHW@collins.com. H. Point of Contact for Technical Publications Goodrich Corporation A Collins Aerospace Company, Hoist and Winch Division 2727 E Imperial Hwy Brea, California 92821 Fax: 714-984-1675 Email: GHW-Pubs@collins.com Website: www.goodrichhoistandwinch.com Initial Date: Feb 05/21 44316-505-01 Page 11 of 11 Jul 09/21 Warning - This information contains technical data subject to EAR ECCN: EAR99 Rev 2 S.B. N°109SP-143 ALERT DATE: February 22, 2021 REVISION: A - July 22, 2021 Page 21 of 21 ### Page 22 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.