What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) N111EL, Israel aircraft industries 1125 iw westwind astra, enroute from van nuys, CA to easton, MD, diverted to Lincoln, NE. The pilot notified ATC that he was diverting due to hydraulic fluid loss. Maintenance found the aux hyd system return line that connects the hydraulic filter to the aux tank had been chaffed. The chaffed spot on the aluminum line had a small hole causing a slow leak.
As the FAA filed it
(-23) N111EL, ISRAEL AIRCRAFT INDUSTRIES 1125 IW WESTWIND ASTRA, ENROUTE FROM VAN NUYS, CA TO EASTON, MD, DIVERTED TO LINCOLN, NE. THE PILOT NOTIFIED ATC THAT HE WAS DIVERTING DUE TO HYDRAULIC FLUID LOSS. MAINTENANCE FOUND THE AUX HYD SYSTEM RETURN LINE THAT CONNECTS THE HYDRAULIC FILTER TO THE AUX TANK HAD BEEN CHAFFED. THE CHAFFED SPOT ON THE ALUMINUM LINE HAD A SMALL HOLE CAUSING A SLOW LEAK.