What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: engine exhaust system failed under the muffler shroud. The exhaust cannister split, allowing direct flame impingement upon the aircraft alternator and cowling, causing electrical generation system failure and melting of the lower engine cowl. Examination of the aircraft exhaust system revealed that it was in an advanced state of deterioration due to rust and fatigue cracking.
As the FAA filed it
NARRATIVE: ENGINE EXHAUST SYSTEM FAILED UNDER THE MUFFLER SHROUD. THE EXHAUST CANNISTER SPLIT, ALLOWING DIRECT FLAME IMPINGEMENT UPON THE AIRCRAFT ALTERNATOR AND COWLING, CAUSING ELECTRICAL GENERATION SYSTEM FAILURE AND MELTING OF THE LOWER ENGINE COWL. EXAMINATION OF THE AIRCRAFT EXHAUST SYSTEM REVEALED THAT IT WAS IN AN ADVANCED STATE OF DETERIORATION DUE TO RUST AND FATIGUE CRACKING.