What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Left engine exhaust disconnected from turbocharger outlet and also disconnecting from the wastegate slipjoint after take off on climb out, 5000 ft causing loss of power. Damage occurred to the wastegate control, attaching parts and cowling also were damaged due to undirected exhaust gases.
The attaching v-band clamp (outlet exhaust pipe from the turbocharger) was found still safetied and attached to the exhaust pipe flange. The "t" bolt nut was not self locking type but was provided a safety wire hole. The nut was not safetied. The aircraft had accumulated 4.9 hours (at the time of failure) since annual inspection where the left exhaust assy aft of the turbocharger was removed, repaired and reinstalled. Eir opened on A&P mechanic
As the FAA filed it
LEFT ENGINE EXHAUST DISCONNECTED FROM TURBOCHARGER OUTLET AND ALSO DISCONNECTING FROM THE WASTEGATE SLIPJOINT AFTER TAKE OFF ON CLIMB OUT, 5000 FT CAUSING LOSS OF POWER. DAMAGE OCCURRED TO THE WASTEGATE CONTROL, ATTACHING PARTS AND COWLING ALSO WERE DAMAGED DUE TO UNDIRECTED EXHAUST GASES.
THE ATTACHING V-BAND CLAMP (OUTLET EXHAUST PIPE FROM THE TURBOCHARGER) WAS FOUND STILL SAFETIED AND ATTACHED TO THE EXHAUST PIPE FLANGE. THE "T" BOLT NUT WAS NOT SELF LOCKING TYPE BUT WAS PROVIDED A SAFETY WIRE HOLE. THE NUT WAS NOT SAFETIED. THE AIRCRAFT HAD ACCUMULATED 4.9 HOURS (AT THE TIME OF FAILURE) SINCE ANNUAL INSPECTION WHERE THE LEFT EXHAUST ASSY AFT OF THE TURBOCHARGER WAS REMOVED, REPAIRED AND REINSTALLED. EIR OPENED ON A&P MECHANIC