ACFT EVACED AFTER R ENG SHOWS SIGNS OF ENG FIRE.

Narrative

AFTER THE R ENG FAILED THE TTL (TORQUE AND TEMP LIMITER) TEST; THE ENG FLAMED OUT AND SPOOLED DOWN. WHILE IT WAS SPOOLING DOWN I PULLED THE STOP AND FEATHER LEVER SINCE THE EGT WAS CLBING. WHILE RUNNING THE UNFEATHER PUMP TO PUT THE PROP BACK ON THE START LOCK TO DO A VENTILATION RUN; THE FO RPTED SEEING FIRE COMING FROM THE REAR OF THE ENG. WHILE SHOOTING THE ENG FIRE BOTTLES AND SHUTTING DOWN THE L HAND ENG I ORDERED THE PLANE EVACED THROUGH THE MAIN CABIN DOOR. THE FO DID A GREAT JOB ASSISTING THE PAX OUT OF THE ACFT WITHOUT ANY INJURIES. EXACTLY 1 WK AGO; THE SAME PLANE HAD THE SAME PROB. I FILED ANOTHER NASA RPT ON APPROX NOV/XX/95. I WAS THE PIC ON THAT FLT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE PIC STATED THAT THE ACFT WAS A BAE3200 JETSTREAM. THE PRIOR 'SIMILAR' INCIDENT THAT HE HAD MENTIONED HAD OCCURRED JUST 1 WK BEFORE; IN THE SAME ACFT. ON THAT FLT THERE WERE NO PAX AS IT WAS A 'REPOSITIONING-FERRY' FLT. THE SAME SYMPTOMS HAD OCCURRED HOWEVER; WITH A SUBSEQUENT EVAC OF THE CREW. THE COMPANY WAS AWARE OF BOTH EVENTS AS THEY WERE FAIRLY HIGH PROFILE SITS. THE ONLY DIFFERENCES BTWN THE 2 INCIDENTS WERE THAT: THE COMPANY DID NOT FEED BACK ANY INFO TO THE CREW AS TO THE CAUSE OF THE EVENT; JUST AN ACFT EXCHANGE AND THEY WERE 'GONE.' THE FLAME WAS NOTED COMING OUT THE AIR INTAKE ON THE FIRST EVENT. ON THE SECOND ONE; THE FLAME WAS NOTED COMING OUT THE REAR OF THE ENG. THE CAUSE; AS DETERMINED FROM AN ANALYSIS OF THE SECOND EVENT WAS ALSO 2-FOLD; IE; A FAULTED COMPANY PROC AND A BAD FUEL BYPASS VALVE THAT STUCK IN THE OPEN POS. THE COMPANY 'SOP' WAS FOR THE FLCS TO AUTOMATICALLY ACTIVATE THE 'STOP' BUTTON ANY TIME AN INTERRUPT OCCURRED IN THE ENG RUN OR CHK PROC. IN THIS CASE WHEN THE ENG MALFUNCTIONED DURING THE 'TTL' TEST. THE PROB WITH THIS WAS THAT THE STOP BUTTON INJECTS FUEL INTO THE BURNER CAN; PLACING EXTRA FUEL INTO THE ENG. EVIDENTLY THE PROC AS USED WAS NOT CORRECT SO FAR AS 'TIMING' WAS CONCERNED AND SHOULD NOT BE USED FOR AN ABNORMAL SIT SUCH AS THIS. THE CREWS HAD BEEN TOLD TO DO THE 'TTL' CHK WITH THE BLEED AIR 'ON.' UPON INVESTIGATION (INSTIGATED BY AN NTSB INQUIRY) IT WAS FOUND THAT THE MANUFACTURER RECOMMENDED THAT THE BLEED AIR BE 'OFF' DURING THIS CHK. THE GND CREWS HAD TRIED BUT COULD NOT DUPLICATE THIS EVENT. THEY WERE ATTEMPTING TO 'DUPE' WITH THE BLEED AIR OFF; IN THE CORRECT POS. THE FAULTY FUEL BYPASS VALVE (STOP BUTTON ACTIVATED) ONLY EXACERBATED AN ALREADY SKEWED ACFT CONFIGN. THE RPTR WAS CALLED INTO THE CHIEF PLT'S OFFICE FOR BRIEFING ON THIS NOW CORRECTED PROC AS THE PIC WAS SLATED FOR 'RE- TRAINING' AFTER THIS INCIDENT. THE RPTR IS THE ACR'S UNION SAFETY REPRESENTATIVE AND ADDED THAT THE COMPANY IS PLANNING ON CHANGING THEIR CHKLIST PROCS BUT HAVEN'T AS YET.