Narrative:

On scheduled flight from bna to atl in cruise at 15000 ft VFR/clear. About 30 NM south of cha the left propeller psi went to full maximum. As we were consulting our QRH (quick reference handbook) the left engine/gear box started to fail. 'The engine rolled back with yaw.' we then secured the engine but the propeller failed to feather. During all this we declared an emergency and started a turn and descent towards cha. On the descent I tried to manual feather which had no effect. The propeller had 'pitch locked' when we lost all gear box oil as we later found out. (There was a 4 inch crack in the box). Now the good part -- as we were handed over to cha approach -- the controller asked us if we could take turns for traffic! (We were lined up 20 mi out for runway 2 cha!) we said no, then he asked if we could expedite our descent! At this time the traffic came on and said he would keep out of our way! We landed on runway 2 and taxied to the gate without further incident.

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Original NASA ASRS Text

Title: FAILURE OF THE L ENG GEAR BOX RESULTING IN LOSS OF OIL AND UNABLE TO FEATHER PROP.

Narrative: ON SCHEDULED FLT FROM BNA TO ATL IN CRUISE AT 15000 FT VFR/CLR. ABOUT 30 NM S OF CHA THE L PROP PSI WENT TO FULL MAX. AS WE WERE CONSULTING OUR QRH (QUICK REF HANDBOOK) THE L ENG/GEAR BOX STARTED TO FAIL. 'THE ENG ROLLED BACK WITH YAW.' WE THEN SECURED THE ENG BUT THE PROP FAILED TO FEATHER. DURING ALL THIS WE DECLARED AN EMER AND STARTED A TURN AND DSCNT TOWARDS CHA. ON THE DSCNT I TRIED TO MANUAL FEATHER WHICH HAD NO EFFECT. THE PROP HAD 'PITCH LOCKED' WHEN WE LOST ALL GEAR BOX OIL AS WE LATER FOUND OUT. (THERE WAS A 4 INCH CRACK IN THE BOX). NOW THE GOOD PART -- AS WE WERE HANDED OVER TO CHA APCH -- THE CTLR ASKED US IF WE COULD TAKE TURNS FOR TFC! (WE WERE LINED UP 20 MI OUT FOR RWY 2 CHA!) WE SAID NO, THEN HE ASKED IF WE COULD EXPEDITE OUR DSCNT! AT THIS TIME THE TFC CAME ON AND SAID HE WOULD KEEP OUT OF OUR WAY! WE LANDED ON RWY 2 AND TAXIED TO THE GATE WITHOUT FURTHER INCIDENT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.