SDR 97ZZZX2718

Service difficulty report · Clutch · Amtr MINI500

Difficulty date: May 3, 1997
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N5455K
Make and model: Amtr MINI500
Aircraft serial: 0090
System (JASC): 6310 · Engine/Transmission Coupling
Part: Clutch
Condition: Vibration
Location: Engine
Stage of operation: IN
Nature of condition: E
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

THIS IS AN AMATEUR-BUILT AIRCRAFT FROM REVOLUTION HELICOPTERS. AT 100 PERCENT ENGINE RPM, PILOT REPORTED A VERY HIGH VIBRATION IN THE AIRFRAME. TROUBLESHOOTING REVEALED AN 8.0 IPS VIBRATION AT 6,500 RPM AT THE ENGINE CLUTCH ASSY. THE CLUTCH WAS SENT BACK TO REVOLUTION WHO RE-BALANCED THE ASSEMBLY. AFTER RE-BALANCING AND RE-INSTALLATION, THE VIBRATION WAS STILL PRESENT.