Service difficulty report · Bushing · Urocop EC130B4

Difficulty date
October 6, 2022
Submitted
October 7, 2022
Operation
Air carrier
Aircraft
N151AC
Make and model
Urocop EC130B4
Aircraft serial
3732
Aircraft time
8,533 hours, 22,264 cycles
Engine
Tmeca ARRIEL2B1
Engine time
4,686 hours, 8,356 cycles
Part
Bushing
Part number
A030SM40021
Condition
Failed
Location
M/R Swashplate
Part time
247 hours
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

DURING ASSEMBLY OF THE LOWER SCISSOR THE CLEARANCE “J” COULD NOT BE OBTAINED. REF MM REV 16 AMM 62-33-00,4-1 PARA F.2.C.1.G. THE SCISSORS LINK WAS DISASSEMBLED, AND THE BUSHING LENGTH WAS MEASURED AND FOUND TO BE 3.3046”. A NEW AIR BUS BUSHING P/N 704A33-640-021 WAS MEASURED AND FOUND TO HAVE A LENGTH OF 3.3100. THE NEW BUSHING P/N 704A33-640-021 BEING .0054” IN LENGTH LONGER WILL PROVIDE THE CORRECT “J” MEASUREMENT. THE SHORTER BUSHING ARE SUSPECTED TO BE P/N A030SM40021.

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