Narrative:

5 NM northwest of craff on the STAR, the aircraft's electrical system went off-line and circuit breakers (avionics) started popping. While consulting the checklist and resetting circuit breakers, I lost voice and navigation with dfw approach. I inadvertently missed a 30 degree turn to the east at craff while dealing with the situation. With everything back on-line, I advised approach (124.3) of the occurrence and she said 'no problem' and then gave me vectors. Maintenance found a weak circuit breaker controling the avionics bus.

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Original NASA ASRS Text

Title: A C550 PLT LOSES AVIONICS AND COM FREQ WHILE ARRIVING ON A STAR NEAR CRAFF INTXN AT DFW, TX.

Narrative: 5 NM NW OF CRAFF ON THE STAR, THE ACFT'S ELECTRICAL SYS WENT OFF-LINE AND CIRCUIT BREAKERS (AVIONICS) STARTED POPPING. WHILE CONSULTING THE CHKLIST AND RESETTING CIRCUIT BREAKERS, I LOST VOICE AND NAV WITH DFW APCH. I INADVERTENTLY MISSED A 30 DEG TURN TO THE E AT CRAFF WHILE DEALING WITH THE SIT. WITH EVERYTHING BACK ON-LINE, I ADVISED APCH (124.3) OF THE OCCURRENCE AND SHE SAID 'NO PROB' AND THEN GAVE ME VECTORS. MAINT FOUND A WEAK CIRCUIT BREAKER CTLING THE AVIONICS BUS.

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.