What was found
(CAN) LEFT TACH INDICATION FAILURE IN-FLIGHT. TACH DRIVE SPRING FAILED POSSIBLY BECAUSE IT HAD NOT BEEN LUBED PROPERLY AT ANGLE DRIVE ADAPTER.
- Difficulty date
- January 29, 1999
- Submitted
- March 26, 2000
- Operation
- General aviation
- Make and model
- Piper PA31350
- Engine
- Lyc TIO540J2BD
- System (JASC)
- 7714 · Engine RPM Indicating System
- Part
- Indicator
- Part number
- 574AW
- Condition
- Failed
- Location
- Dual Tach
- Part time
- 4,927 hours
- Stage of operation
- NR
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.