<p><strong><font color = "blue">Sunstrand Fuel Pump: 025323-150; Shaft Corrosion (16 ea); ATA 7314 </font></strong></p>
<p><em>(Sixteen Cessna 208B's all have suffered the same discrepancy with nearly identical descriptions suffering from the same discrepancy over approximately the last 13 months. The aircraft function under one operator—one description testifies for the remaining fifteen.</em></p>
<p>The operator's submission states, “Precautionary inspection was performed on the Fuel Pump drive spline in accordance with Pratt and Whitney PT6 maintenance manual: Fuel Pump Coupling In-Situ inspection; 73-10-02 page 210, paragraph 8D. Maintenance found the fuel pump drive spline severely corroded. The fuel pump assembly was replaced with a fresh overhauled unit, then the aircraft was returned to service.” </p>
<p><em>(Expected ranges would have been most helpful here to add perspective. Of the sixteen ‘defective' or corroded drive shafts for these engine-driven pumps, the lowest time is 790.0 hours; the highest time 5581.0 hours; the average 3,597.5 hours. This yields an equivalent 154—24-hour days of flying!) </em></p>