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AD/BELL 222/36 - Tail Rotor Driveshaft Thomas Couplings
Bell Helicopter Textron Canada (BHTC) 22Bell Helicopter Textron Canada (BHTC) 222 Series Helicopters
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Bell Helicopter Textron Canada (BHTC) 222 Series Helicopters
| AD/BELL 222/36 | Tail Rotor Driveshaft Thomas Couplings | 8/2007 |
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| Applicability: | Bell Helicopter Textron Canada (BHTC) Model 222 helicopters serial number (S/N) up to 47089; andModel 222B helicopters S/N up to 47156; andModel 222U helicopters S/N up to 47574. |
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| Requirement: | 1. Verify Disc Assemblies for manufacturing date, proper thickness and indexing, in accordance with instructions provided in applicable Alert Service Bulletins (ASB) listed below or later NAA approved revisions.- 222 and 222B ASB-222-07-105 dated 28 March 2007.- 222U ASB-222U-07-76 dated 28 March 2007.2. For Disc Assemblies held as spares.(a) If manufacturing date is not between 1 November 2005 and 30 November 2006, the Disc Assemblies do not require further action.(b) If required, adjust the thickness of Disc Assemblies by removing or adding a new disc.(c) If required, re-index Disc assembly in accordance with the applicable Maintenance Manual.(d) Attach to Disc Assembly a serviceable tag with inscription indicating compliance to the applicable ASB.3. For Disc Assemblies installed in an aircraft.(a) Remove from service any Disc Assembly which is not within the required thickness as per the table below. |
<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:127.1pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-bottom:12pt; text-align:center"><span>Disc Assembly</span></p><p style="margin-top:12pt; text-align:center"><span>Part Number</span></p></td><td colspan="2" style="width:265.1pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Total Thickness</span></p></td></tr><tr><td style="width:127.1pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span></span></p></td><td style="width:127.15pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Minimum</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>Maximum</span></p></td></tr><tr><td style="width:127.1pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>36300-1</span></p></td><td style="width:127.15pt; border:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>0.174 inch (4.42 mm)</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>0.186 inch (4.75 mm)</span></p></td></tr><tr><td style="width:127.1pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>37855-1</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>0.126 inch (3.20 mm)</span></p></td><td style="width:127.15pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="text-align:center"><span>0.138 inch (3.50 mm)</span></p></td></tr></tbody></table><p style="margin-left:42.5pt; margin-bottom:12pt; text-indent:-21.25pt"><span>(b)</span><span style="width:7.26pt; text-indent:0pt; display:inline-block"> </span><span>Remove any Disc Assembly which is not properly indexed.</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt; text-indent:-21.25pt"><span>(c)</span><span style="width:7.93pt; text-indent:0pt; display:inline-block"> </span><span>If Disc Assemblies do not require further action or the manufacturing date is not between 1 November 2005 and 30 November 2006, make an appropriate log book notation to this effect.</span></p><p class="Note" style="margin-top:12pt"><span>Note:</span><span> </span><span>Transport </span><span>Canada</span><span> AD CF-2007-09 dated 17 May 2007 refers.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Compliance:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>1.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Not later than 25 flight hours or 30 days from the effective date of this directive whichever occurs first.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>2.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Before fitment to an aircraft after the effective date of this AD.</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt; text-indent:-42.55pt"><span>3.</span><span style="width:11.7pt; text-indent:0pt; display:inline-block"> </span><span>a.</span><span style="width:13.52pt; text-indent:0pt; display:inline-block"> </span><span>Within 10 flight hours from the effective date of this AD.</span></p><p style="margin-top:12pt; margin-left:42.55pt; margin-bottom:12pt; text-indent:-42.55pt"><span>3.</span><span style="width:11.7pt; text-indent:0pt; display:inline-block"> </span><span>b.</span><span style="width:12.85pt; text-indent:0pt; display:inline-block"> </span><span>Within 300 flight hours from the effective date of this AD or at the next scheduled inspection, whichever occurs first.</span></p><p style="margin-top:12pt; margin-left:42.55pt; text-indent:-42.55pt"><span>3.</span><span style="width:11.7pt; text-indent:0pt; display:inline-block"> </span><span>c.</span><span style="width:13.52pt; text-indent:0pt; display:inline-block"> </span><span>Following the verification of the Disc Assembly.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>This Airworthiness Directive becomes effective on 2 August 2007.</span></p></td></tr><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Background:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>It has been determined that certain Disc Assemblies as listed in this AD manufactured between 1 November 2005 through 30 November 2006, may have insufficient amount of discs or may have been indexed incorrectly.</span></p></td></tr></tbody></table>