A SAAB 340B ON TKOF CLB AT 1000 FT DECLARED AN EMER AND DIVERTED DUE TO ENG TAILPIPE 'HOT' LIGHT ILLUMINATED. R ENG SHUT DOWN.

Narrative

DURING TKOF PRIOR TO REACHING 1000 FT; R ENG TAILPIPE HOT LIGHT ILLUMINATED. FO; WHO WAS FLYING; PERFORMED MEMORY ITEMS - EPC - FOLLOWED BY AOM VOL 1. LIGHT DID NOT EXTINGUISH AND PROCEEDED WITH R ENG SHUTDOWN. DECLARED AN EMER. ADVISED FA AND PAX. FA ADVISED THAT R ENG APPEARED TO BE NORMAL (NO FIRE). I (THE CAPT); BECAME THE FLYING PILOT WHEN IT WAS DETERMINED TO PROCEED WITH THE ENG SHUTDOWN PROC. RETURNED TO ZZZ AND LANDED SAFELY. FLT UNEVENTFUL. EMER PERSONNEL DETERMINED THAT THERE APPEARED TO BE NO FIRE; AND WE TAXIED TO THE GATE. WEATHER CONDITIONS WERE IMC CEILING APPROX 300 FT AND VISIBILITY 2 MILES. TEMP 17 DEGS C. RAINING AND AT NIGHT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED IN HIS EIGHT YEARS FLYING THIS AIRPLANE AND KNOWING THE CHRONIC PROB OF FALSE TAILPIPE 'HOT' WARNINGS; THIS IS HIS FIRST. THE RPTR SAID WHEN IT RAINS; WATER SEEPS INTO THE TAILPIPE AREA AND DOES NOT DRAIN OUT. THE RPTR STATED WITH THE ENGS AT A HIGH POWER SETTING; THE WATER FLASHES TO STEAM; TRIGGERING THE SENSOR LOOP AND ILLUMINATING THE TAILPIPE 'HOT' WARNING LIGHT. THE RPTR SAID BY THE BOOK; THE ENG MUST BE SHUT DOWN EVEN THOUGH A FALSE WARNING IS SUSPECTED. THE RPTR STATED ON THE NIGHT OF THIS INCIDENT AND THE WEATHER CONDITIONS PRESENT; IT WAS HARD SHUTTING DOWN THAT ENG.