|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Altitude||msl single value : 2500|
|Controlling Facilities||tracon : ito.tracon|
|Operator||common carrier : air taxi|
|Make Model Name||AS 350 Astar/Ecureuil|
|Operating Under FAR Part||Part 135|
|Flight Phase||cruise : level|
|Route In Use||enroute : direct|
|Affiliation||company : air taxi|
|Function||flight crew : single pilot|
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 120|
flight time total : 6200
flight time type : 500
|Affiliation||government : faa|
|Function||controller : approach|
|Qualification||controller : radar|
|Anomaly||aircraft equipment problem : critical|
other anomaly other
|Independent Detector||other flight crewa|
|Consequence||faa : reviewed incident with flight crew|
Maintenance Human Performance
While on an air tour, I experienced a complete electrical failure in an AS350BA. I had 6 passenger on board and the first indication was the clearance delivery player used for backgnd music quit. There were no caution lights illuminated, ie, generator. The next item to fail was the UHF radio and transponder -- all within mins. I then noticed the volt meter dropping rapidly and started shedding electrical consumers. First was the air conditioner and then other non essential items but the voltage had dropped to 12. I then made a 15 min flight with no electrical support. My notification to dispatch was through cell phone to notify tower direction and ETA. Green light given and landing made and passenger offloaded. Tower cleared to maintenance hangars after cell phone call. Landed, and maintenance discovered starter generator failed. No explanation as to lack of caution light for generator. Tower reported no further report needed and a company incident report was filed. Battery had only 12 volts left. Passenger were briefed and all took the next tour flight to finish their visit. The use of the cell phone helped a great deal.
Original NASA ASRS Text
Title: AN AIR TOUR HELI CUTS ITS OPS SHORT AND RETURNS TO BASE WHEN THE MAIN ELECTRICAL SYS IS LOST. NO RADIO SIT MADE THIS A NORDO ACFT EXCEPT FOR THE RPTR'S CELL PHONE.
Narrative: WHILE ON AN AIR TOUR, I EXPERIENCED A COMPLETE ELECTRICAL FAILURE IN AN AS350BA. I HAD 6 PAX ON BOARD AND THE FIRST INDICATION WAS THE CD PLAYER USED FOR BACKGND MUSIC QUIT. THERE WERE NO CAUTION LIGHTS ILLUMINATED, IE, GENERATOR. THE NEXT ITEM TO FAIL WAS THE UHF RADIO AND XPONDER -- ALL WITHIN MINS. I THEN NOTICED THE VOLT METER DROPPING RAPIDLY AND STARTED SHEDDING ELECTRICAL CONSUMERS. FIRST WAS THE AIR CONDITIONER AND THEN OTHER NON ESSENTIAL ITEMS BUT THE VOLTAGE HAD DROPPED TO 12. I THEN MADE A 15 MIN FLT WITH NO ELECTRICAL SUPPORT. MY NOTIFICATION TO DISPATCH WAS THROUGH CELL PHONE TO NOTIFY TWR DIRECTION AND ETA. GREEN LIGHT GIVEN AND LNDG MADE AND PAX OFFLOADED. TWR CLRED TO MAINT HANGARS AFTER CELL PHONE CALL. LANDED, AND MAINT DISCOVERED STARTER GENERATOR FAILED. NO EXPLANATION AS TO LACK OF CAUTION LIGHT FOR GENERATOR. TWR RPTED NO FURTHER RPT NEEDED AND A COMPANY INCIDENT RPT WAS FILED. BATTERY HAD ONLY 12 VOLTS LEFT. PAX WERE BRIEFED AND ALL TOOK THE NEXT TOUR FLT TO FINISH THEIR VISIT. THE USE OF THE CELL PHONE HELPED A GREAT DEAL.
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.