In this issue we detail a recent fuel leak repair that had the competition scratching their heads.
SEAL Aviation was called out to identify a fuel leak from the tail section of a Citation 560 near a ventilation duct. A local A&P mechanic was originally called out by the customer but they could not locate the source of the leak. The customer then called upon the experience and knowledge of SEAL Aviation to assist in identifying and repairing this leak. The first step was to access the area and provide a thorough inspection to identify the source of the leak.
Upon inspection, SEAL Aviation was able to determine this particular leak was caused by chaffing from contact between scat tubing and the motive flow jet pump line. Over time, this contact caused the fuel line to eventually leak. You can see in the video below how slow this particular leak was.
As you can see in the following picture, the chaffing from this friction caused a visible indent to the scat tubing that the fuel line was in contact with. Over time, this friction caused the fuel line to leak. This is why it is important to ensure there is adequate spacing around individual components. SEAL Aviation was able to repair the line and stop the leak.
