What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On March 16, 2013 N38CZ (registered as N801SA), a bae 125-800A, departed Pontiac Michigan IFR for aspen, CO. The aircraft climbed and leveled at FL270. The aircraft was over western mi when the crew noticed a smell. The captain opened the manual outflow valve several times to evacuate the fumes. The crew elected to return to Pontiac mi. After landing, they noticed that the circuit breaker for the NO1 radio had been tripped. It was the belief of the crew that the number 1 com was the source of the fumes. The radio was removed and sent for maintenance. The east mi FSDO initiated a 44709 on the airworthiness certificate.
As the FAA filed it
ON MARCH 16, 2013 N38CZ (REGISTERED AS N801SA), A BAE 125-800A, DEPARTED PONTIAC MICHIGAN IFR FOR ASPEN, CO. THE AIRCRAFT CLIMBED AND LEVELED AT FL270. THE AIRCRAFT WAS OVER WESTERN MI WHEN THE CREW NOTICED A SMELL. THE CAPTAIN OPENED THE MANUAL OUTFLOW VALVE SEVERAL TIMES TO EVACUATE THE FUMES. THE CREW ELECTED TO RETURN TO PONTIAC MI. AFTER LANDING, THEY NOTICED THAT THE CIRCUIT BREAKER FOR THE NO1 RADIO HAD BEEN TRIPPED. IT WAS THE BELIEF OF THE CREW THAT THE NUMBER 1 COM WAS THE SOURCE OF THE FUMES. THE RADIO WAS REMOVED AND SENT FOR MAINTENANCE. THE EAST MI FSDO INITIATED A 44709 ON THE AIRWORTHINESS CERTIFICATE.