# Bell Service Bulletin 025-69-21: No revision named - Rights: © Bell Textron Inc. Filed by the FAA in regulations.gov docket FAA-2020-1170, the docket of AD 2021-11-13. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Bell Service Bulletin 025-69-21](https://openairdocs.org/service-documents/bell/sb-025-69-21.md) - Title as filed: Safran Aerosystems Services Service Bulletin 025-69-21 Revision 00 - Pages: 12 - PDF: https://openairdocs.org/files/sha256/56/e2/56e29d93be8c0e90d9f525f80ec2ffd9950f0c181ef15bf7e0353555baee67b6 - Page: https://openairdocs.org/service-documents/bell/sb-025-69-21/file/56e29d93be8c ## Text This text is 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 (OCR) S SAFRAN AEROSYSTEMS FLOATS & RAFTS 58 rue de Segonzac - B.P. 81 16103 COGNAC CEDEX - FRANCE Phone: (33) 5 45 83 20 20 Fax: (33) 5 45 83 20 70 SERVICE BULLETIN TITLE: EQUIPMENT/FURNISHINGS (ATA 25) EMERGENCY FLOTATION SYSTEMS INSPECTION OF FLOAT SUPPLY HOSES 1. PLANNING INFORMATION A. Effectivity (1) Concerned equipment This Service Bulletin applies to Safran Aerosystems (SAO) Emergency Flotation System (EFS) manufactured before 07/2019, and the float supply hoses manufactured before 01/2014. NOTE: Identification information (EFS part number, float part number, serial number...) mentioned in this Service Bulletin are available on the adhesive identification label of the related equipment. Refer to Table 3 and related Component Maintenance Manual to find the labels location on the equipment. EFS parts on which Service Bulletin 025-69-21 is marked on the log-card are not concerned. NOTE: Serial number of EFS containing hoses already verified by Safran Aerosystems Services during maintenance of corresponding EFS since 06/2019 are included in Appendix at the end of this document. The Service Bulletin (SB) is not applicable to EFS whose serial numbers are mentioned. Table below gives the Serial Numbers of EFS floats not affected and out of effectivity, provided that it is ensured that no hose has been replaced during Maintenance, Repair and Operations (MRO) action. SAO EFS BELL RELATED EFS EXCLUDED P/N P/N DESIGNATION FLOAT P/N S/N (1) 221030-0 429-706-069-105 EFS ASSY + 2 LIFE RAFTS 220337-0 52 and higher JAR OPS3 + RB 220338-0 221030-1 429-706-069-125 EFS ASSY + 2 LIFE RAFTS 220337-0 52 and higher JAR OPS3 + RB 220338-0 221030-2 429-706-069-143 EFS ASSY + 2 LIFE RAFTS JAR OPS3 + RB 220337-0 220338-0 52 and higher 221035-0 429-706-069-101 EFS ASSY 220337-0 52 and higher 220338-0 220337-0 221035-1 429-706-069-121 EFS ASSY 220338-0 52 and higher 220337-0 221035-2 429-706-069-139 EFS ASSY 52 and higher 220338-0 EFS ASSY + LH LIFE RAFT 220337-0 221036-0 429-706-069-103 52 and higher JAR OPS3 + RB 220338-0 DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 1 / 12 ### Page 2 (OCR) S SAFRAN AEROSYSTEMS SAO EFS BELL RELATED EFS EXCLUDED P/N P/N DESIGNATION FLOAT P/N S/N (1) EFS ASSY + LH LIFE RAFT 220337-0 221036-1 429-706-069-123 52 and higher JAR OPS3 + RB 220338-0 EFS ASSY + LH LIFE RAFT 220337-0 221036-2 429-706-069-141 52 and higher JAR OPS3 + RB 220338-0 224185-0 429-706-069-157 EFS ASSY + RH LIFE RAFT JAR OPS3 + RB 220337-0 220338-0 52 and higher 220545-0 LH FLOAT ASSY 220337-0 52 and higher 220545-1 LH FLOAT ASSY 220337-0 52 and higher 220545-2 LH FLOAT ASSY 220337-0 52 and higher 220546-0 RH FLOAT ASSY 220338-0 52 and higher 220546-1 RH FLOAT ASSY 220338-0 52 and higher 220546-2 RH FLOAT ASSY 220338-0 52 and higher LH FLOAT ASSY + LIFE 220562-0 220337-0 52 and higher RAFT JAR OPS3 + RB 220562-1 LH FLOAT ASSY + LIFE RAFT JAR OPS3 + RB 220337-0 52 and higher 220562-2 LH FLOAT ASSY + LIFE 220337-0 52 and higher RAFT JAR OPS3 + RB RH FLOAT ASSY + LIFE 220563-0 220338-0 52 and higher RAFT JAR OPS3 + RB RH FLOAT ASSY + LIFE 220563-1 RAFT JAR OPS3 + RB 220338-0 52 and higher RH FLOAT ASSY + LIFE 220563-2 220338-0 52 and higher RAFT JAR OPS3 + RB (1): Excluded Serial Numbers (S/N) provided that it is ensured that no hose has been replaced during Maintenance, Repair and Operations (MRO) action. EFS : Emergency Flotation Sysytem LH : Left Hand P/N : Part Number RB : Radio Beacon RH : Right Hand SAO : Safran Aerosystems S/N : Serial Number Table 1 - List of equipment not affected DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 2 / 12 ### Page 3 (OCR) • SAFRAN AEROSYSTEMS B. Concurrent Requirements None. C. Reason During maintenance operations on one Emergency Flotation System (EFS) (out of Bell helicopters scope), the third compartment of the left forward float did not inflate. After analyzing, the supply hose that ensures the gas flow from the cylinder assembly to the related float compartment was found to be blocked. This Service Bulletin is issued to provide the instructions for verifying that there is no blockage through the float supply hoses of EFS inflation system. D. Description To prevent any significant operational disruptions, a special inspection has to be performed to in- service and spare supply hoses to verify that each component is fully operational and to ensure that the equipment is in normal condition. NOTE: Refer to Table 1 to identify the hoses of components that are possibly affected. Compliance Inspection will be performed systematically during the first return of the equipment for maintenance or before delivery. For spare parts, all the hoses manufactured before 01/2014 (manufacturing date on the hose identification plate), should be inspected before delivery, installation inside pack and at the latest within 6 months following release of this Service Bulletin (SB). The code at to per an men br The procedure defined in this SB must be performed by the Safran Aerosystems Services (SAS) network or by staff able to perform the float maintenance in accordance with applicable maintenance documentation. F. Approval The technical information contained in this Equipment Manufacturer's SB was approved by Bell under the prerogatives of Transport Canada Civil Aviation (TCCA) only for the Bell helicopters range concerned. G. Manpower (1) 1 technician (2) Estimated time: 10 minutes per hose (application of section 3.C of this Service Bulletin (SB)). H. Weight and Balance Not affected. DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 3 / 12 ### Page 4 (OCR) S SAFRAN AEROSYSTEMS I. Electrical Load Data Not affected. J. Software Accomplishment Summary Not applicable. K. References (1) Component Maintenance Manuals - CMM 25-69-66 (2) Component Maintenance Publications (Data Modules) Not applicable. L. Publications Affected (1) Component Maintenance Manuals - CMM 25-69-66 (2) Component Maintenance Publications (Data Modules) Not applicable M. Interchangeability Not applicable. DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 4 / 12 ### Page 5 (OCR) • SAFRAN AEROSYSTEMS 2. MATERIAL INFORMATION A. Material - Price and Availability (1) Material to be purchased Refer to Table 2. (2) Price Hose inspection related to section 3.C of this Service Bulletin (SB) is free of charge if performed during float periodic maintenance. If SB has to be applied before the next maintenance, the application of the SB is free of charge excluding cost incurred by the anticipated maintenance. The SB shall be applied in Safran Aerosystems Services (SAS) network to be free of charge. Replacement of hose(s) (refer to Table 2) found defective (hose(s) blocked) after inspection will be free of charge. (3) Availability For order of spares parts, please contact Safran Aerosystems Services (SAS) following this email address: spares.order.sao@safrangroup.com B. Industry Support Information Visit the Safran Aerosystems Services (SAS) web site (capability List section) at the address that follows for an authorized Repair Center in your area: www.safran-aerosystems.com/customers C. List of Components (1) Material to be purchased SAO HOSE P/N QUANTITY 217196-0 Upon request Table 2 - List of materials (2) Material supplied by the operator Not applicable. D. Subcomponents To Be Re-identified Not applicable. DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 5 / 12 ### Page 6 (OCR) S SAFRAN AEROSYSTEMS E. Tooling Mark & code pen, green, Dykem ref. 84007 (commercially available) or equivalent Plastic cable tie, 300 mm min. × 5 mm max. (11.811 in min. x .196 in max.) (commercially available) F. Special Tools None. DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 6 / 12 ### Page 7 (OCR) • SAFRAN AEROSYSTEMS 3. ACCOMPLISHMENT INSTRUCTIONS CAUTION: APPLY THIS INSPECTION SERVICE BULLETIN ON CLEAN SURFACE AND WITH CLEAN HANDS. A. General (1) Table 3 that follows gives the Component Maintenance Manual (CMM) related to in-service equipment to be verified. SAO EFS P/N DESIGNATION EQUIPMENT CMM 221030-* EFS ASSY + 2 LIFE RAFTS JAR OPS3 + RB 221035-* EFS ASSY 25-69-66 221036-* EFS ASSY + LH LIFE RAFT JAR OPS3 + RB 224185-* EFS ASSY + RH LIFE RAFT JAR OPS3 + RB Table 3 - Component Maintenance Manual (CMM) related to in-service equipment B. Preparation (1) Remove each supply hose from the float (applicable to in-service equipment) (a) Refer to Component Maintenance Manual (CMM) for float unfolding and inflation assembly removal instructions. C. Procedure NOTE: Inspection procedure is applicable to each end (fitting or banjo) of the supply hose to be inspected. (1) Inspection of hoses (a) For each section of the hose to be inspected, insert the end of the plastic cable tie in the hole(s) of the related fitting (or banjo) (refer to Figure 1): - If the cable tie goes through the fitting (or banjo) freely up to a minimal length of 300 mm (11.811 in), the hose is serviceable (refer to Figure 2), - If a blockage occurs in the duct of the fitting (or banjo), the hose is blocked internally and must be replaced: • For equipment delivered to the customer including helicopter operators and Maintenance, Repair and Operations (MRO) (under Part 145 regulation): Please contact the dedicated logistic center of Safran Aerosystems Services (SAS) network to get a replacement part. DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 7 / 12 ### Page 8 (OCR) S SAFRAN AEROSYSTEMS Following the observation of the described discrepancy, you are invited to inform the Engineering Support Department of Safran Aerosystems Services (SAS) of the technical occurrence, email address here below: tech-support.sao@safrangroup.com • For equipment under Part 21: Please contact: Safran Aerosystems (SAO) Floats & Rafts Division (F6101) Phone: (33) 5 45 83 20 20 to get a replacement part. - Repeat the operation for all end-pieces and banjos of the hose. NOTE: For the double duct banjos, do the inspection for each duct through the related hole. (b) After inspection, identify the hose inspected and found serviceable by applying a visible green "dot" on the base of all the verified banjos with a green Dykem mark & code pen ref. 84007 (or equivalent indelible green marking). (c) Record the application of the service bulletin by writing down SB 025-69-21 above the external identification marking of the EFS. Accordingly complete the log-card of the equipment when the hose is installed on the EFS by writing the date and the reference of the Service Bulletin. D. Re-identification Not applicable. E. Test Not applicable. F. Close-up (1) Re-install the float supply hose on the equipment (applicable to in-service equipment) (a) Refer to Component Maintenance Manual (CMM) for inflation assembly installation, float folding and flotation packing instructions. DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 8 / 12 ### Page 9 (OCR) S SAFRAN AEROSYSTEMS Banjo Plastic cable tie 300 mm min. x 5 mm max. (11.811 in min. x .196 in max.) Figure 1 Figure 2 DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 9 / 12 ### Page 10 (OCR) S SAFRAN AEROSYSTEMS THIS PAGE INTENTIONALLY LEFT BLANK DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 10 / 12 ### Page 11 (OCR) S SAFRAN AEROSYSTEMS APPENDIX SAO EFS RELATED S/N OF SAO EFS VERIFIED BY P/N FLOAT P/N SAFRAN AEROSYSTEMS SERVICES (SAS) 220546-2 220338-0 16 220546-2 220338-0 43 220546-2 220338-0 47 220562-2 220337-0 16 DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 11 / 12 ### Page 12 (OCR) S SAFRAN AEROSYSTEMS THIS PAGE INTENTIONALLY LEFT BLANK DATE: MAR 23/20 SERVICE BULLETIN 025-69-21 REVISION: 00 PAGE: 12 / 12 --- 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.