What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23)Us air flight 1924 was enroute from rochester (roc) to Washington (dca) on an IFR flight when it diverted to Harrisburg, Pennsylvania (MDT) due to an electrical burning smell in the cabin near row #1. No smoke was noted. An after landing post flight examination revealed that the fumes were strongest in the forward cargo compartment and the e&e bay. Maintenance personnel from us air in philadelphia (phl) troubleshot the problem and determined that the smoke was coming from the a transformer rectifier unit. All three tru units were replaced due to dust clogging the cooling vents resulting in overheating. Us air pmi, privacy data omitted was contacted and evaulated the malfunction. An aircraft records ckeck was plannned to determined when the last cleaning was accomplished. On June 30, 2000, us air reliability department forwarded a copy of the SDR for our review. No further action is required. Submission of this report closes this incident.
As the FAA filed it
(-23)US AIR FLIGHT 1924 WAS ENROUTE FROM ROCHESTER (ROC) TO WASHINGTON (DCA) ON AN IFR FLIGHT WHEN IT DIVERTED TO HARRISBURG, PENNSYLVANIA (MDT) DUE TO AN ELECTRICAL BURNING SMELL IN THE CABIN NEAR ROW #1. NO SMOKE WAS NOTED. AN AFTER LANDING POST FLIGHT EXAMINATION REVEALED THAT THE FUMES WERE STRONGEST IN THE FORWARD CARGO COMPARTMENT AND THE E&E BAY. MAINTENANCE PERSONNEL FROM US AIR IN PHILADELPHIA (PHL) TROUBLESHOT THE PROBLEM AND DETERMINED THAT THE SMOKE WAS COMING FROM THE A TRANSFORMER RECTIFIER UNIT. ALL THREE TRU UNITS WERE REPLACED DUE TO DUST CLOGGING THE COOLING VENTS RESULTING IN OVERHEATING. US AIR PMI, ^PRIVACY DATA OM^ WAS CONTACTED AND EVAULATED THE MALFUNCTION. AN AIRCRAFT RECORDS CKECK WAS PLANNNED TO DETERMINED WHEN THE LAST CLEANING WAS ACCOMPLISHED. ON JUNE 30, 2000, US AIR RELIABILITY DEPARTMENT FORWARDED A COPY OF THE SDR FOR OUR REVIEW. NO FURTHER ACTION IS REQUIRED. SUBMISSION OF THIS REPORT CLOSES THIS INCIDENT.