What was found
THIS AIRCRAFT HAD A 211 CC VACUUM PUMP FROM 7/93 UNTIL 5/99. WHEN THE PART FAILED, IT WAS REPLACED WITH A 215 CC, SN 5AR2833. THIS LASTED 4 MONTHS (19 HOURS) AND WAS REPLACED WITH A 215 CC, SN 11AP4226. THIS LASTED 6 MONTHS (57 HOURS) AND WAS REPLACED IN 5/00 WITH A 215 CC, SN S-2AT1103. THIS FAILED IN 8/00 AFTER 3 MONTHS, AND 64 HOURS AND WAS REPLACED WITH 215 CC, SN 4AR2358. THIS LASTED ONE MONTH AND 22 HOURS AND FAILED 9/19/00. SUBMITTER THINKS THERE IS A PROBLEM WITH THIS PUMP TYPE. (X)