SDR CA110808006

Service difficulty report · Bearing · Bell 206B

Difficulty date: August 5, 2011
Submitted: September 9, 2011
Operation: Air carrier
Make and model: Bell 206B
Aircraft time: 12,672 hours
Engine: Allsn 250C20B
System (JASC): 6320 · Main Rotor Gearbox
Part: Bearing
Part number: 206040038101
Condition: Failed
Location: Transmission
Part time: 237 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

THE TRANSMISSION HAS BEEN INSPECTED FOR "MAKING METAL", UPON FURTHER INSP THE BEARING, PN 206-040-038-101 SN MB 4790, WAS DEEMED TO BE THE SOURCE. THE BEARING WAS INSTALLED CORRECTLY AS INDICATED, HOWEVER THE BEARING ITSELF WAS ASSEMBLED INCORRECTLY WITH THE INDICATED THRUST SIDE OPPOSITE THE ACTUAL ONE.

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