What was found
TRIPLE TACH - NR 1 NEEDLE BOUNCES BETWEEN 30 AND 60 PERCENT AT ENGINE IDLE- ROTOR NEEDLE GIVING WRONG INDICATION. REMOVED AND REPLACED.
- Difficulty date
- February 7, 2001
- Submitted
- August 16, 2001
- Operation
- Air carrier
- Aircraft
- N912SM
- Make and model
- Bolkms BK117B2
- Aircraft serial
- 7150
- Engine
- Tmeca ARRIEL1
- System (JASC)
- 7714 · Engine RPM Indicating System
- Part
- Indicator
- Part number
- 1179405303
- Part serial
- 419
- Condition
- Erratic
- Location
- Triple Tach
- Part time
- 86 hours
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.