Service difficulty report · Piston

Difficulty date
October 6, 2024
Submitted
October 21, 2024
Operation
General aviation
Filed by
7L7R550D
Lift Maintenance LLC
Aircraft
N946L
Engine
Austro E4
Engine time
815 hours
Part
Piston
Part number
E4A72400000
Part serial
002574
Condition
Damaged
Location
Nr 3
Part time
815 hours
Stage of operation
IN
How discovered
B
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

ECU A AND B FAIL DURING INITIAL CLIMB, AND SIGNIFICANT LOSS OF POWER. DURING SUBSEQUENT BORESCOPE INSPECTION FOUND A HOLE IN THE #3 PISTON. PREVIOUS BORESCOPE INSPECTION WAS PERFORMED @ 787.4 ETSN.