Service difficulty report · Bolt · Diamon DA42NG

Difficulty date
February 8, 2024
Submitted
February 9, 2024
Operation
General aviation
Aircraft
N517BL
Make and model
Diamon DA42NG
Engine
Austro E4
Engine time
933 hours
Part
Bolt
Part number
E4A10100202
Condition
Sheared
Location
Engine
Part time
933 hours
Stage of operation
TO
How discovered
O
Nature of condition
K, Y
Precautionary procedure
C

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

What was found

SIGNIFICANT OIL LOSS AND LOSS OF OIL PRESSURE ON TAKEOFF. FADEC SYSTEM AUTOMATICALLY SHUT DOWN ENGINE DUE TO OIL PRESSURE LOSS. PILOT LANDED SAFELY ON RUNWAY AND TAXIED OFF OF ACTIVE RUNWAY WITHOUT ISSUES. UPON VISUAL INSPECTION, FOUND THERE TO BE A 2 IN DIAMETER HOLE BLOWN IN THE THE CRANKCASE NEAR THE PISTON ARM OF CYLINDER 3. FURTHER INSPECTION HAS NOT BEEN DONE, BUT BELIEVE THE HOLE TO BE CAUSED BY A JOURNAL BEARING BOLT SHEARING.

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