What was found
(CAN) WHILE PERFORMING AN COMPRESSION TEST, THE ENGINEER HEARD A SQUEAKING AS THE PROP WAS BEING ROTATED. THE SOURCE WAS INDENTIFED COMING FROM THE VACUUM PUMP. PUMP WAS REPLACED AND NO FURTHER ISSUES WERE NOTED. (TC NR 20071023007)
- Difficulty date
- October 22, 2007
- Submitted
- January 21, 2008
- Operation
- General aviation
- Make and model
- Piper PA31
- Aircraft time
- 8,958 hours
- Engine
- Lyc TIO540A2C
- Propeller
- Hartzl HCE3YR2A
- System (JASC)
- 3710 · Vacuum Distribution System
- Part
- Pump
- Part number
- 441CC7
- Part serial
- 125775
- Condition
- Inoperative
- Location
- Vacuum Sys
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.