well i have uploaded green-status.gif and red-status.gif in images folder but it doesn't shows again well here's my pilots_list.tpl 
 
<div class="mcright">
<h3><?php echo $title?></h3>
<?php
  if(!$allpilots)
  {
     echo 'There are no pilots!</div>';
     return;
  }
?>
<table class="sortable" width="700" cellspacing="1" cellpadding="5" border="1">
 <thead>
   <tr>
     <th width="56px">Pilot ID</th>
     <th width="150px">Name</th>
     <th width="80px">Rank</th>
     <th width="55px">Flights</th>
     <th width="55px">Hours</th>
     <th width="100px">Last Flight</th>
     <th width="55px">Vatsim</th>
     <th width="55px">Ivao </th>
     <th width="65px">Active/Inactive</th>
   </tr>
 </thead>
<tbody>
<?php
foreach($allpilots as $pilot)
{
  /* 
     To include a custom field, use the following example:
     <td>
        <?php echo PilotData::GetFieldValue($pilot->pilotid, 'VATSIM ID'); ?>
     </td>
     For instance, if you added a field called "IVAO Callsign":
        echo PilotData::GetFieldValue($pilot->pilotid, 'IVAO Callsign');
   */
?>
<tr>
  <td width="1%" nowrap><a href="<?php echo SITE_URL?>/index.php/profile/view/<?php echo $pilot->pilotid?>">
        <?php echo PilotData::GetPilotCode($pilot->code, $pilot->pilotid)?></a>
  </td>
  <td>
     <div align="left"><img src="<?php echo Countries::getCountryImage($pilot->location);?>" 
        alt="<?php echo Countries::getCountryName($pilot->location);?>" />
         <?php echo $pilot->firstname.' '.$pilot->lastname?>
        </div></td>
  <td><div align="center"><img src="<?php echo $pilot->rankimage?>" alt="<?php echo $pilot->rank;?>" /></div></td>
  <td><div align="center"><?php echo $pilot->totalflights?></div></td>
  <td><div align="center"><?php echo $pilot->totalhours?></div></td>
  <td><div align="center"><?php
//$report = PIREPData::GetLastReports($pilot->pilotid, 1);
if($pilot->lastpirep  == 0)
{
       echo 'No data yet';
}
else
{
$report = PIREPData::GetLastReports($pilot->pilotid, 1);
echo date('d.M.Y', strtotime($report->submitdate));
}
?></td>
<td><div align="center">
     <?php $fieldvalue = PilotData :: GetFieldValue ( $pilot -> pilotid , 'Vatsim ID' );
if( $fieldvalue != '' )
{
echo '<a href="http://www.vataware.com/pilot.cfm?cid=' . $fieldvalue . '" target="_blank"><img src="/images/charticon.jpg" width="28" height="28" border="0" alt="Vatsim ID" /></a></a>' ;
} 
else
{
echo '<img src="/images/nonreg.png" width="20" height="18" border="0" alt="Not Listed" /></a>' ;
}
?>
   </div></td>
       <td><div align="center">
     <?php $fieldvalue = PilotData :: GetFieldValue ( $pilot -> pilotid , 'IVAO ID' );
if( $fieldvalue != '' )
{
echo '<a href="http://www.ivao.aero/members/person/details.asp?ID='. $fieldvalue . '" target="_blank"><img src="/images/charticon.jpg" width="28" height="28" border="0"  alt="Ivao ID" /></a>' ;
}
else
{
echo '<img src="/images/nonreg.png" width="20" height="18" border="0" alt="Not Listed" /></a>' ;
}
?>
   </div></td>
<td><div align="center"><?php
   If ($pilot->retired == 0)
         { echo '<img src="/images/green-status.gif" />'; }
   else
         { echo '<img src="/images/red-status.gif" />'; }
?></div></td></div></td>
    <?php
}
?>
  </div>
</tbody>
</table>
<br />
</div>