What was found
PRESSURE REGULATOR AND RELIEF VALVE FAILURES AS AN OPERATOR OF TWO KING AIR B300, WE HAVE EXPERIENCED OUR SIXTH PNEUMATIC PRESSURE REGULATOR FAILURE WITHIN THE LAST 13 MONTHS. I PERFORMED A REVIEW OF ALL RELEVANT 8130’S FROM PRIOR FAILED UNITS AND DISCOVERED THAT ALL WERE OVERHAULED BY PARKER HANNIFIN CORPORATION – ELYRIA (CERTIFICATE NO: H05R916M)
DATE OF FAILURES ON BOTH AIRCRAFT:
N72NG - REPLACED DEC/2018, MAY/2019, JUL/2019, JAN/6/2020
N77NG - REPLACED FEB/2019, DEC/2019
PARKER HANNIFIN P/N: 1H75-13 ACFT MANF. P/N: 101-380027-5