# SERVICE BULLETIN
Equipment/Furnishings – D-LOK Hook Assembly

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# 42315-489-02 14 Aug 2009 Page 1 of 8 1. Planning Information A. Effectivity This Service Bulletin is applicable to the D-LOK Hook Asse mbly Lifesaving Systems, part number 410-A, installed on Goodrich Hoist Assembli es. The affected D- LOK Hook Assembly Lot Numbers are 208 and 1108. Refer to Tabl e 1 for the affected Goodrich Hook Kit Assemblies and Rescue Hoist Assemblies.



### Table 1. Affected Hook and Hoist Assemblies

Lifesaving Systems Part Number Goodrich

Hook Kit Assembly Part Number Goodrich Rescue Hoist Assembly Part Number 410-A 44316-440 44316-12-101 410-A 42315-789 44316-10-101 42325-12 Series 42325-14 Series 42325-16 Series 42325-18-1 410-A 44311-400 44311-10 Series

The D- LOK Hook, Lifesaving Systems part number 410-A, is a commercially available hook that can be procured from suppliers other than Goo drich. This Service Bulletin is limited to only those D- LOK Hooks that have been purch ased directly from Goodrich. Refer to Table 2 for the list of affected D- LOK Hooks by Serial Number that are subject to this Service Bulletin.

Table 2. Affected Hook Part Numbers and Serial Number s Lifesaving Systems Part Number Lot Numbers Serial Numbers
410-A Lot 208 592 – 599 600 – 601 603 – 633 635 – 637 640 – 642 645 – 648 650 – 654 656 – 663 665 – 666 668 – 684 686 – 687

# SERVICE BULLETIN
Equipment/Furnishings – D-LOK Hook Assembly

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# 42315-489-02 14 Aug 2009 Page 2 of 8

Table 2. Affected Hook Part Numbers and Serial Number s (continued) Lifesaving Systems Part Number Lot Numbers Serial Numbers
410-A Lot 208 689 – 690 694 696 – 697 699 – 701 704 – 711 713 – 726 728 – 730 732 – 743 745 – 752 754 – 758 760 – 761 763 – 764 768 770 – 777 779 – 781 783 – 784 410-A Lot 1108 786 – 796 799 – 811 813 – 823 825 – 830 832 – 839 841 – 847 850 – 858 860 – 861 863 – 867 869 – 871

B. Reason The D- LOK Hook Supplier incorporated a change in the manufacturing process from a forging to a casting. This manufacturing process change is categorized as a major change and requires specific Non-Destructive Testing (NDT) on all of the cast hooks. The required NDT was not performed on the cast hooks pr ior to their introduction into service. As a result, all of the cast D- LOK Hooks are be ing recalled from service to be returned and replaced with compliant hooks. There are currently no reported failures of the cast h ook and initial test results from Goodrich have revealed a large margin of safety in the cast hooks. C. Description This Service Bulletin provides the instructions to inspect th e D- LOK Hook part number 410-A to determine if it is a cast hook from the affect ed lot.

# SERVICE BULLETIN
Equipment/Furnishings – D-LOK Hook Assembly

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# 42315-489-02 14 Aug 2009 Page 3 of 8 Goodrich will replace any Lifesaving Systems part number 4 10-A cast D- LOK Hook that is removed from service as a result of this service bulleti n with either a Lifesaving Systems part number 410-A forged D-LOK Hook, a Goodri ch PN 42315-489 cast DLOK Hook, or a Goodrich PN 42305-283 Marine Hook, as a ppropriate for the aircraft installation. Goodrich will provide these replacement h ooks free of charge provided that the cast part number 410-A hook is returned to Goodrich

. D. Compliance This Service Bulletin is only applicable to the D- LOK Ho ok Lifesaving Systems part number 410-A and marked with Lot number 208 or 1108 (see Figure 1).
NOTE : Some hook assemblies may have already been visually insp ected and marked with (V-OK) on the side of the hook (see Figure 1). T he visual inspection that was performed is NOT an indication that the hook has bee n processed through NDT. All D- LOK Hooks with Lifesaving Systems part numbe r 410A from Lot 208 and Lot 1108 are subject to this recall in accordance wi th this Service Bulletin including those hooks with (V-OK) marked on them. Goodrich Corporation recommends this inspection be per formed and affected hooks be replaced within 500 total hoist cycles or 200 hoist cycles fr om the date of the Airworthiness Directive that specifies the performance of this service bulletin, or by September 30, 2009, whichever occurs first. E. Approval
This Service Bulletin contains no modification informat ion that revises the approved configuration. This modification is in compliance with the existing FAA and EASA approved configuration. F. Manpower (1) The estimated amount of labor to accomplish the i nstructions of this Service Bulletin for one cast D- LOK Hook assembly is 30 minutes, as foll ows:

Remove Hook Assembly 10 minutes Inspection 10 minutes Install Hook Assembly 10 minutes (2) The one-time visual inspection described in this Ser vice Bulletin may be performed by Hoist Operators/Users, Goodrich Corporation Sensors an d Integrated Systems, or by personnel and facilities officially authorized by Goodri ch Corporation Sensors and Integrated Systems. G. Material — Cost and Availability Goodrich will replace any Goodrich-provided cast D-LOK H ook part number 410-A with a compliant forged D-LOK Hook part number 410-A, or a co mpliant Marine Hook part number 42305-283, or a compliant Slide Lock Hook part number 42315-490 in accordance with this Service Bulletin at no charge to the customer provided the customer return their cast D-LOK Hook part number 410-A.

# SERVICE BULLETIN
Equipment/Furnishings – D-LOK Hook Assembly

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# 42315-489-02 14 Aug 2009 Page 4 of 8 The following table lists the material required to ac complish the replacement of a cast DLOK Hook part number 410-A with a forged D- LOK Hook part number 410-A, or Marine Hook part number 42305-283, or a Slide Lock Hook part n umber 42315-490 in accordance with the instructions of this Service Bulletin. The specific replacement hook and associated hook nut is dependent on the specific pl atform hoist installation and will be determined as part of the Return Material Authori zation (RMA) process with the customer.
NEW P/N DESCRIPTION OLD P/N QTY 410-A
or 42305-283 Or 42315-490 D- LOK Hook Assembly, Forged

or Marine Hook
or Slide Lock (dependent on platform installation) 410-A Lot 208
or Lot 1108 1

42305-298
or 44301-404 Hook Nut

(dependent on platform installation) --- 1

MS39086-494 Spring Pin --- 1 147577 Loctite No. 243 for a D-LOK Hook --- AR H. Material Availability
None. I. Tooling - Price and Availability
None. J. Weight and Balance
Not affected.
K. Electrical Load Data
Not affected. L. Software Accomplishment Summary
None.
M. Reference Goodrich Corporation applicable rescue hoist Component Maintenance Manual (CMM), 1st Maintenance Level.
N. Other Publications Affected
None.

# SERVICE BULLETIN
Equipment/Furnishings – D-LOK Hook Assembly

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# 42315-489-02 14 Aug 2009 Page 5 of 8 2. Accomplishment Instructions
NOTE : All D- LOK Hooks are subject to this one-time inspect ion including those installed on-aircraft as well as those in spares invento ry. A. Prepare for visual inspection. If the hook is curren tly installed on a hoist mounted to an aircraft, perform the following steps as required to g ain access to the hook to inspect the part number, lot number and serial number: (1) Apply power to the rescue hoist system and extend ca ble assembly approximately 3 feet (1.0 m) to gain access to the hook f or inspection. (2) Set the rescue hoist power source OFF. B. Visually inspect the D- LOK Hook for part number 410 -A and Lot number 208 or Lot number 1108 (see Figure 1). Note the hook serial nu mber, it will be required to return the hook to Goodrich for replacement. C. If the D- LOK Hook part number is 410-A and the l ot number is Lot 208 or Lot 1108, then the hook is subject to the recall and replacement. If the hook is not part number 410-A or is not from Lot 208 or Lot 1108, then it is not s ubject to the recall and no further action is required. D. To remove a hook that is currently installed on a Go odrich hoist, refer to the corresponding Component Maintenance Manual (CMM) liste d in the table below for the hook assembly removal and installation procedures.

HOOK KIT CMM

42315-789 25-00-01-1 25-00-16-1 25-00-17-1 25-00-19-1 25-00-18-1

44316-440 25-00-30-1

E. Inspection Visually inspect the D- LOK Hook for part number 410-A and Lot 208 or Lot 1108 (see Figure 1). Note the hook part number, lot number, a nd serial number; this information will be required to return the hook to Goodrich for r eplacement.
NOTE : Contact Joe Rumolo at Goodrich directly for any technica l questions. Refer to Paragraph 2.H. for contact information. F. Testing
None. G. Marking
None.

# SERVICE BULLETIN
Equipment/Furnishings – D-LOK Hook Assembly

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# 42315-489-02 14 Aug 2009 Page 6 of 8 H. Point of Contact To arrange for return of cast D- LOK Hooks for warrant y replacement, contact Goodrich Corporation Customer Service at the address listed bel ow: Goodrich Corporation, Sensors and Integrated Systems Diamond Bar, California 91765 Attn: Jennette Ness Phone: 909-569-0210 FAX: 909-569-0387 A Return Material Authorization (RMA) number is requi red from Goodrich Corporation prior to shipment of the unserviceable hook assembly. Good rich Corporation will require the hook part number, lot number, and serial number t o establish the RMA.
For Technical Questions: Goodrich Corporation, Sensors and Integrated Systems Diamond Bar, California 91765 Attn: Joe Rumolo Phone: 909-569-0231 FAX: 909-569-0387
3. Material Information A. The parts required to modify one unit are itemized below:

NEW P/N QTY DESCRIPTION OLD P/N INSTRUCTIONS/DISPOSITION 410-A (Forged)
or 42305-283 Or 42315-490 1 D- LOK Hook Assy, Forged

or Marine Hook Or Slide Lock (dependent on platform installation) 410-A Lot 208 or Lot 1108 Return cast D- LOK Hook part number 410-A to Goodrich.

42305-298
or 44301-404 1 Hook Nut (dependent on platform installation) ---- Replace old Hook Nut with new Hook Nut provided. Discard old Hook Nut. MS39086-494 1 Spring Pin ---- Replace old Spring Pin with new Spring Pin provided. Discard old Spring Pin. 147577 AR Loctite No.243 for a D-LOK Hook ---- Apply t o the end threads on replacement hook as shown in Figure 2.

# SERVICE BULLETIN
Equipment/Furnishings – D-LOK Hook Assembly

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# 42315-489-02 14 Aug 2009 Page 7 of 8 Goodrich Visual Inspection Stamp

Hook Lot Number

Hook Serial Number Lifesaving Systems Hook Part Number

Figure 1. Sample D- LOK Hook Assembly with Visual Inspect ion Stamp

# SERVICE BULLETIN
Equipment/Furnishings – D-LOK Hook Assembly

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# 42315-489-02 14 Aug 2009 Page 8 of 8 Figure 2. Apply Loctite To Hook Assembly Thread