Airworthiness Directives; Cessna Aircraft Company Models 172R, 172S, 182T, T182T, 206H, and T206H Airplanes

Airworthiness Directives; Cessna Aircraft Company Models 172R, 172S, 182T, T182T, 206H, and T206H Airplanes

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<p><a name="AD" class="style1">2007-08-03 CESSNA AIRCRAFT COMPANY:</a> Amendment  39-15020; Docket No.<br>
FAA-2007-27709;  Directorate Identifier 2007-CE-028-AD.<strong></strong></p>
<p><strong>Airworthiness  Directives; Cessna Aircraft Company Models 172R, 172S, 182T, T182T, 206H, and  T206H Airplanes </strong></p>
<p><strong>AGENCY:</strong> Federal Aviation  Administration (FAA), DOT.</p>
<p><strong>ACTION:</strong> Final rule; request for  comments.</p>
<p><strong>SUMMARY:</strong> <span class="style2">The FAA is adopting a new airworthiness directive (AD) to  supersede AD 2006-17-04</span>, which applies to certain Cessna Aircraft  Company (Cessna) Models 172R, 172S, 182T, T182T, 206H, and T206H airplanes. AD  2006-17-04 currently requires you to inspect the two end fittings on each of  the flexible fuel hoses located in the engine compartment for the correct  torque values, and, if any incorrect torque values are found during the inspection,  tighten the hose end fittings to the correct torque values. This AD results  from four reports of loose fuel lines connected to the fuel servo or fuel flow  transducer.  Two reports were of  in-flight engine failure on a Model T182T airplane.  A third report was of in-flight engine  failure on a Model 206H airplane. A fourth report was of a Model 172S airplane  losing engine power on final approach. Consequently, this AD would require you  to establish the correct torque values of the end fittings on fuel hoses for  certain Cessna Models 172R, 172S, 182T, T182T, 206H, and T206H airplanes. This  AD clarifies that the torque values need to be physically established and  visual inspection only is not sufficient. We are issuing this AD to detect and  correct potential loss of fuel flow, which may result in partial or complete  loss of engine power and/or uncontrolled engine compartment fire due to fuel  leakage forward of the firewall.</p>
<p><strong>DATES:</strong> This AD becomes  effective on May 2, 2007.</p>
<p><strong>Applicability </strong><br>
  (c)     This  AD applies to the following airplane models and serial numbers that are  certificated in any category:</p>
<p align="center"><strong>Table 1.—Applicability</strong></p>
<table border="1" cellspacing="0" cellpadding="0">
  <tr>
    <td width="84" valign="top"><br>
        <strong>Model</strong> </td>
    <td width="474" valign="top"><p><strong>Serial Numbers</strong> </p></td>
  </tr>
  <tr>
    <td width="84" valign="top"><p>(i) 172R</p></td>
    <td width="474" valign="top"><p>17281244 through    17281364, 17281366 through 17281372, 17281374 through 17281376, and 17281379</p></td>
  </tr>
  <tr>
    <td width="84" valign="top"><p>(ii) 172S</p></td>
    <td width="474" valign="top"><p>172S9809 through    172S10349, 172S10351 through 172S10374, 172S10376 through 172S10423,    172S10425 through 172S10426, 172S10428 through 172S10430, 172S10432 through    172S10444, 172S10446 through 172S10450, and 172S10452 through 172S10454</p></td>
  </tr>
  <tr>
    <td width="84" valign="top"><p>(iii) 182T</p></td>
    <td width="474" valign="top"><p>18281527 through    18281889, 18281892, 18281895, 18281897, 18281899, 18281901, and 18281904</p></td>
  </tr>
  <tr>
    <td width="84" valign="top"><p>(iv) T182T</p></td>
    <td width="474" valign="top"><p>T18208381 through    T18208659, T18208661, T18208663 through T18208678, T18208680 through    T18208686, T18208689, and T18208690</p></td>
  </tr>
  <tr>
    <td width="84" valign="top"><p>(v) 206H</p></td>
    <td width="474" valign="top"><p>20608231 through    20608285</p></td>
  </tr>
  <tr>
    <td width="84" valign="top"><p>(vi) T206H</p></td>
    <td width="474" valign="top"><p>T20608515 through    T20608662, T20608664 through T20608697, T20608699 through T20608714, and    T20608717</p></td>
  </tr>
</table>
<p><strong>Unsafe Condition </strong><br>
  (d)     This AD is the result of four reports of  loose fuel lines connected to the fuel servo or fuel flow transducer. Two reports  were of in-flight engine failure on a Model T182T airplane. A third report was  of in flight-engine failure on a Model 206H airplane. A fourth report was of a  Model 172S airplane that lost engine power on final approach. We are issuing  this AD to detect and correct potential loss of fuel flow, which may result in  partial or complete loss of engine power and/or uncontrolled engine compartment  fire due to fuel leakage forward of the firewall.</p>

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