As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AU) UPON INSTALLATION IN AIRCRAFT SEAL DRAIN BEGAN LEAKING. UPON INVESTIGATION BY R&O SHOP LEAK HAD DISSAPPEARED. THREE SIMILAR INSTANCES HAVE LED TO CONCLUSION THAT EVEN IN A SHORT PERIOD OF TIME THIS SEAL WILL DRY OUT. SUBMITTER SUGGESTS THAT THESE PUMPS BE SOAKED IN FUEL BEFORE INSTALLATION. PUMPS FOUND ON HS 748, FALCON 20, AND CL-215 AIRCRAFT.