Narrative:

As I approached the baton rouge area, the controller advised me that I would be vectored for the ILS approach to runway 13. I selected the appropriate frequency for localizer and OM and idented them. Upon intercepting the localizer, I selected approach on the flight director mode select. The approach and GS light illuminated. I selected 300 ft on the radar altimeter. As the aircraft intercepted the GS, I established 130 KTS airspeed and approximately 700 FPM descent rate. Everything appeared normal at that time. At about 600 ft MSL, the left side GS indicator began to fluctuate and then went full scale up immediately. At that time, the command bars and the localizer indicated everything normal. I was trying to analyze the problem when the radar altimeter light illuminated, indicating the aircraft was 300 ft AGL. I then looked up and glimpsed what I perceived to be the lead in lights. At that time, I looked down at the flight director and localizer and they appeared normal. I then looked back to see if I could locate the runway. At that time, I saw what I believed to be power lines. I immediately initiated a power-on, climbing, left turn to avoid the power lines. There was a large blue flash of light. Due to the flash of light, I suspected that the aircraft had contacted the power lines. I notified the controller at that time. I determined that the aircraft was flying and handling correctly, and that I would go around for another attempt at the ILS runway 13 and should that fail, we should make arrangements to go somewhere else. On the next attempt, I completed the approach and landed. After landing, the FAA inspectors determined that there was no damage to the aircraft or power lines.

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Original NASA ASRS Text

Title: SA226 PLT STRIKES PWR LINES DURING ILS APCH TO BTR.

Narrative: AS I APCHED THE BATON ROUGE AREA, THE CTLR ADVISED ME THAT I WOULD BE VECTORED FOR THE ILS APCH TO RWY 13. I SELECTED THE APPROPRIATE FREQ FOR LOC AND OM AND IDENTED THEM. UPON INTERCEPTING THE LOC, I SELECTED APCH ON THE FLT DIRECTOR MODE SELECT. THE APCH AND GS LIGHT ILLUMINATED. I SELECTED 300 FT ON THE RADAR ALTIMETER. AS THE ACFT INTERCEPTED THE GS, I ESTABLISHED 130 KTS AIRSPD AND APPROX 700 FPM DSCNT RATE. EVERYTHING APPEARED NORMAL AT THAT TIME. AT ABOUT 600 FT MSL, THE L SIDE GS INDICATOR BEGAN TO FLUCTUATE AND THEN WENT FULL SCALE UP IMMEDIATELY. AT THAT TIME, THE COMMAND BARS AND THE LOC INDICATED EVERYTHING NORMAL. I WAS TRYING TO ANALYZE THE PROB WHEN THE RADAR ALTIMETER LIGHT ILLUMINATED, INDICATING THE ACFT WAS 300 FT AGL. I THEN LOOKED UP AND GLIMPSED WHAT I PERCEIVED TO BE THE LEAD IN LIGHTS. AT THAT TIME, I LOOKED DOWN AT THE FLT DIRECTOR AND LOC AND THEY APPEARED NORMAL. I THEN LOOKED BACK TO SEE IF I COULD LOCATE THE RWY. AT THAT TIME, I SAW WHAT I BELIEVED TO BE PWR LINES. I IMMEDIATELY INITIATED A PWR-ON, CLBING, L TURN TO AVOID THE PWR LINES. THERE WAS A LARGE BLUE FLASH OF LIGHT. DUE TO THE FLASH OF LIGHT, I SUSPECTED THAT THE ACFT HAD CONTACTED THE PWR LINES. I NOTIFIED THE CTLR AT THAT TIME. I DETERMINED THAT THE ACFT WAS FLYING AND HANDLING CORRECTLY, AND THAT I WOULD GO AROUND FOR ANOTHER ATTEMPT AT THE ILS RWY 13 AND SHOULD THAT FAIL, WE SHOULD MAKE ARRANGEMENTS TO GO SOMEWHERE ELSE. ON THE NEXT ATTEMPT, I COMPLETED THE APCH AND LANDED. AFTER LNDG, THE FAA INSPECTORS DETERMINED THAT THERE WAS NO DAMAGE TO THE ACFT OR PWR LINES.

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.