Service difficulty report · Bearing · Robsin R22BETAII

Difficulty date
July 26, 2022
Submitted
July 29, 2022
Operation
General aviation
Aircraft
N1118N
Make and model
Robsin R22BETAII
Aircraft serial
1780
Aircraft time
22,497 hours
Part
Bearing
Part number
A1593
Part serial
215984
Condition
Brinelled
Location
M/R Spindle
Part time
50 hours
Component
Mr Spindle Assy · Robsin
Component part number
A00515
Stage of operation
DE
How discovered
C
Nature of condition
E, F
Precautionary procedure
O

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

What was found

PILOT REPORTED ABNORMAL AND HEAVY CYCLIC FORCES DURING AUTOROTATION AND LOW POWER DESCENTS. FOUND BOTH MR SPINDLES TO BE BRINELLED. REMOVED SPINDLE ASSEMBLIES AND PERFORMED MR SPINDLE BEARING REPLACEMENT IAW RHC COMPONENT MAINTENANCE MANUAL. (NEW NHBB MANUFACTURED BEARING SET INSTALLED) REINSTALLED MR BLADE AND SPINDLE ASSEMBLIES, TRACKED AND BALANCED MR SYSTEM AND CYCLIC RESPONSE WAS NORMAL.