Service difficulty report · Piston Pin · Cirrus SR22

Difficulty date
January 31, 2022
Submitted
January 31, 2022
Operation
General aviation
Make and model
Cirrus SR22
Aircraft serial
2977
Aircraft time
2,473 hours
Part
Piston Pin
Part number
630046
Part serial
SS
Condition
Broken
Location
Engine
Part time
483 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

REPLACING THE OIL FILTER EVIDENCE OF METALIC PARTICLES WAS FOUND. REMOVING THE CYLINDER WE FOUND EVIDENCE OF A MAJOR DAMAGE AT THE ENGINE: -CYLINDER NO 5. PISTON PIN CRITICAL FAILURE – BREAKE. PISTON PIN END CRITICALLY DEFORMED. -CYLINDER NO 1. PISTON PIN END WEAR. -CYLINDER NO 2. PISTON PIN END WEAR. -CYLINDER NO 4. PISTON PIN END WEAR. -CYLINDER NO 3. PISTON PIN END WEAR. CYLINDER NO 6. PISTON PIN END WEAR. AT CYLINDERS NO 1, 3, 5 AND 6 WE FOUND EVIDENCE OF HEAVY SCORING/PISTON RUB.

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