Narrative:

At 4500' MSL on training flight, I was training an ATP student on how to do an intersection hold over weatherford-parker county airport. With no indications and at normal cruise 20' and 2300 RPM, 4000# or 4 hours fuel on board, my right engine made an explosive sound. The aircraft immediately yawed to the right. I went through emergency procedures and feathered the engine. After looking at the cowling on the right engine, I was able to see where shrapnel had penetrated the cowling. I secured the engine and proceeded back to ft worth/meacham airport. The aircraft maintained altitude at 120 KIAS with no troubles. I called regional approach control 120.5 and reported the situation. I stressed that I did not want to declare an emergency, however, I wanted VFR flight following to meacham airport. I did request the emergency equipment to be standing by. I made a smooth landing at meacham with no further incident.

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Original NASA ASRS Text

Title: RIGHT ENGINE OF SMA TWIN ON TRAINING FLT HAD CATASTROPHIC FAILURE (SHRAPNEL PENETRATED COWLING). FLT RETURNED TO FTW FOR LNDG.

Narrative: AT 4500' MSL ON TRNING FLT, I WAS TRNING AN ATP STUDENT ON HOW TO DO AN INTXN HOLD OVER WEATHERFORD-PARKER COUNTY ARPT. WITH NO INDICATIONS AND AT NORMAL CRUISE 20' AND 2300 RPM, 4000# OR 4 HRS FUEL ON BOARD, MY RIGHT ENG MADE AN EXPLOSIVE SOUND. THE ACFT IMMEDIATELY YAWED TO THE RIGHT. I WENT THROUGH EMER PROCS AND FEATHERED THE ENG. AFTER LOOKING AT THE COWLING ON THE RIGHT ENG, I WAS ABLE TO SEE WHERE SHRAPNEL HAD PENETRATED THE COWLING. I SECURED THE ENG AND PROCEEDED BACK TO FT WORTH/MEACHAM ARPT. THE ACFT MAINTAINED ALT AT 120 KIAS WITH NO TROUBLES. I CALLED REGIONAL APCH CTL 120.5 AND RPTED THE SITUATION. I STRESSED THAT I DID NOT WANT TO DECLARE AN EMER, HOWEVER, I WANTED VFR FLT FOLLOWING TO MEACHAM ARPT. I DID REQUEST THE EMER EQUIP TO BE STANDING BY. I MADE A SMOOTH LNDG AT MEACHAM WITH NO 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.