Service difficulty report · Bearing · Bell 505

Difficulty date
April 14, 2019
Submitted
August 17, 2020
Operation
General aviation
Make and model
Bell 505
Part
Bearing
Part number
206010470101
Condition
Loose
Location
Main Rotor
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) IT WAS REPORTED TO BELL:DURING REMOVAL OF SWASHPLATE ASSY TO REPLACE LEAKING UPPER GREASE SEAL 206-010-400-101, TECHNICIANS OBSERVED AND REPORTED WORKING PASTE ACCUMULATED AROUND THE BORE OF THE BEARING P/N 206-010-470-101 AT THE L/H HORN OF THE INNER RING ASSY P/N 206-010-451-109. TECHNICIANS STATED THE BEARING WAS LOOSE LATERALLY BUT WAS NOT SPINNING IN THE BORE. UPON REMOVAL OF THE SUBJECT BEARING, BORE WAS MEASURED AND BORE FOUND TO BE UNDAMAGED AND WITHIN LIMITS. HOWEVER, UPON REMOVAL OF THE SUBJECT BEARING THE TECHNICIANS NOTED ABSENCE OF ANY EVIDENCE OF UNREDUCED ZINC CHROMATE PRIMER (C-201) OR ANEROBIC PRIMER, GRADE N/GREEN (C-320) AS CALLED OUT IN THE SPM (TC# 20190416007)

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