# Goodrich Service Bulletin 44301-10-17 Copy: Revision 4 ("Goodrich SB 44301-10-17 Rev 4"), 8 pages: PDF https://openairdocs.org/files/sha256/24/52/2452b8520e799b154faeff474a824728f634bc69bfdfa58d7f38ba06c4c8b2c8; text https://openairdocs.org/service-documents/goodrich/sb-44301-10-17/file/2452b8520e79.md. Rights: © Goodrich. Filed by the FAA in regulations.gov docket FAA-2018-0336; AD 2019-05-06 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. ## Details - Manufacturer: [Goodrich](https://openairdocs.org/service-documents/goodrich.md) - Type: Service bulletin (Service Bulletin) - Number: 44301-10-17 - Latest revision known: 44301-10-17, Revision 4, dated July 26, 2017 (OpenAirDocs) - Page: https://openairdocs.org/service-documents/goodrich/sb-44301-10-17 ## ADs that cite it (2) (OpenAirDocs) Newest first, with the revision each names, as OpenAirDocs read it from the AD's text. - [AD 2021-21-01](https://openairdocs.org/ad/2021-21-01.md), effective Dec 10, 2021: Revision 4 - [AD 2019-05-06](https://openairdocs.org/ad/2019-05-06.md), effective Apr 17, 2019: Revision 4 Also cited in [2 proposed ADs](https://openairdocs.org/service-documents/goodrich/sb-44301-10-17/proposed.md). ## Text (8 pages) Rights: © Goodrich. Filed by the FAA in regulations.gov docket FAA-2018-0336; AD 2019-05-06 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Page 1 of 8 Jul 26/17 Rev 4 44301-10-17 WARNING - This information contains technical data subject to EAR ECCN: 9E991 SERVICE BULLETIN Equipment/Furnishings - Rescue Hoist - System Safety 1. Planning Information A. Effectivity This Service Bulletin is applicable to the Rescue Hoists shown in the table below which use hook assemblies p/n 44301-420, and 44301-423. B. Reason To increase the level of safety in the hook assembly and reduce the chance that the hook assembly can separate from the hoist cable. This will be accomplished by periodic inspection of the hook assembly. C. Description It was observed that a hook separated from the cable. This was caused by a dual failure; an internal retaining ring failed and the elastomeric energy absorber (the bumper) took a compression set. The retaining ring can corrode in a salt-laden environment. This Service Bulletin provides instructions for the periodic inspection of hook components to prevent separation of the hook from the cable. D. Compliance Incorporation of this Service Bulletin shall be performed within 90 days of its release. This inspection shall be repeated every 180 days. 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. HOOK P/N HOIST P/N 44301-420 44301-10-2 44301-420 44301-10-5 44301-420 44301-10-6 44301-423 44301-10-10 44301-423 44301-10-11 44301-423 44301-10-12 44301-423 44301-10-13 ### Page 2 44301-10-17 Jul 26/17 Rev 4 Page 2 of 8 WARNING - This information contains technical data subject to EAR ECCN: 9E991 SERVICE BULLETIN Equipment/Furnishings - Rescue Hoist - System Safety F. Manpower (1) The estimated amount of labor to accomplish the instructions of this Service Bulletin is 10 minutes. (2) The work described in this Service Bulletin may be performed by personnel and facilities authorized to perform O-level hoist maintenance. G. Material - Cost and Availability (1) The following parts are required to accomplis h the instructions of this Service Bulletin for each unit: (2) Material Availability (a) Parts required for the implementation of this Service Bulletin can be sourced locally or provided by Airbus Helicopter. H. Tooling - Price and Availability None. I. Weight and Balance Not affected. J. Electrical Load Data Not affected. K. Software Accomplishment Summary Not applicable. L. Reference CMM 25-00-21-1 Table 1. Required Parts NEW P/N DESCRIPTION OLD P/N QTY DISPOSITION MS16625-4075 Retaining Ring MS16625-4075 1 Replace 42305-290 Elastomeric Energy Absorber (bumper) 42305-290 1 Replace on condition per Figure 1. ### Page 3 Page 3 of 8 Jul 26/17 Rev 4 44301-10-17 WARNING - This information contains technical data subject to EAR ECCN: 9E991 SERVICE BULLETIN Equipment/Furnishings - Rescue Hoist - System Safety M. Other Publications Affected None 2. Accomplishment Instructions A. Apply power to the hoist and use the control pendant to reel out the cable approximately 3 ft. (1 m) to allow easy maintenance of the hook. Remove power from the hoist. B. Within five minutes of reeling out the cabl e in step 2.A, measure the elastomeric energy absorber (bumper) to verify that it hasn’t taken a permanent compression set (ref Figure 1). C. If the bumper has taken a permanent compression set, install a new bumper, P/N 42305- 290. Refer to CMM 25-00-21-1 for replacement instructions. D. Remove the hook assembly (35, Figure 2) by removing the spring retainer (5) and unscrewing the hook carrier (10) from the body of the hook assembly and set aside. E. Push the hoist cable into the cable hook retainer (15, Figure 2) and remove the seal cap (40) with attached o-ring (45). F. Remove and discard the retaining ring (50). G. If removed, install the spherical seat retainer ring (65, Figure 2) and the split cable retainer (60) on the swaged ball end of the rescue hoist cable. Use the rescue hoist cable to pull the spherical seat retainer ring (65) and the split cable retainer (60) into the lower disc (55). Make sure the assembly is bottomed out in the lower disc (55). CAUTION: LOSS OF THE RETAINING RING CAN CONTRIBUTE TO SEPARATION OF THE HOOK FROM THE HOIST CABLE, POSSIBLY LEADING TO LOSS OF THE CABLE LOAD. H. Install a new retaining ring (50, Figure 2) . Visually inspect retaining ring (50) after installation to make sure it is securely installed in its retaining groove (see Figure 3). I. Install the assembled seal cap (40, Figure 2) with o-ring (45) into the lower disc (55). Make sure the o-ring (45) is not damaged during installation. J. Reinstall the hook by screwing the carrier into the retainer (15, Figure 2) and installing the spring retainer (5). NOTE: The two parts of the carrier (10) and (15) are a matched set (MSL #). When reassembling the carrier, do not intermix components between hook assemblies. K. Apply power to the hoist and reel in the hook to the home position. Remove power from the hoist. ### Page 4 44301-10-17 Jul 26/17 Rev 4 Page 4 of 8 WARNING - This information contains technical data subject to EAR ECCN: 9E991 SERVICE BULLETIN Equipment/Furnishings - Rescue Hoist - System Safety L. Make a log entry noting completion of the inspection task. 3. Point of Contact A. For information about this Service Bulletin, contact your Goodrich Corporation Customer Support Representative at the address listed below: Goodrich Corporation SIS-CA 2727 E Imperial Hwy Brea, CA 92821 USA Phone: (714) 984-1461 ### Page 5 Page 5 of 8 Jul 26/17 Rev 4 44301-10-17 WARNING - This information contains technical data subject to EAR ECCN: 9E991 SERVICE BULLETIN Equipment/Furnishings - Rescue Hoist - System Safety Figure 1. Hook bumper compression Replace if > 0.35 (8.9 mm Nominal 0.25 (6.35 mm) Nominal Hook and Bumper Bumper has taken a compression set and must be replaced D-LOK HOOK SHOWN AS AN EXAMPLE. MEASUREMENT IS THE SAME FOR ALL HOOKS. $FFHSWDEOHLI” (8.9 mm) ### Page 6 44301-10-17 Jul 26/17 Rev 4 Page 6 of 8 WARNING - This information contains technical data subject to EAR ECCN: 9E991 SERVICE BULLETIN Equipment/Furnishings - Rescue Hoist - System Safety Figure 2. Hook Assembly 44301-420, -423 60 60 53 60 65 60 ### Page 7 Page 7 of 8 Jul 26/17 Rev 4 44301-10-17 WARNING - This information contains technical data subject to EAR ECCN: 9E991 SERVICE BULLETIN Equipment/Furnishings - Rescue Hoist - System Safety Figure 3. Location of retaining ring Retaining ring installed Retaining ring missingNote that the split cable retainer is fully exposed ### Page 8 44301-10-17 Jul 26/17 Rev 4 Page 8 of 8 WARNING - This information contains technical data subject to EAR ECCN: 9E991 SERVICE BULLETIN Equipment/Furnishings - Rescue Hoist - System Safety THIS PAGE IS INTENTIONALLY LEFT BLANK --- 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.