HS25 crew had electrical failure on climb out from dtw.

Attributes
ACN	472255
Time
Date	200005
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dtw.airport
State Reference	MI
Altitude	msl single value : 10000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d21.tracon
Operator	general aviation : corporate
Make Model Name	HS 125 Series 700
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	climbout : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 150 flight time total : 2800 flight time type : 750
ASRS Report	472225
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport flight crew : landed in emergency condition
Consequence	other other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

During approach into white plains, ny, the #1 generator tripped, crew landed at destination and reinstated generator on the ground, then departed and flew to detroit metropolitan uneventful, then departed dtw and lost #1 generator, autoplt, yaw damper, air data computer #2, all copilot's flight instruments and pilot side heading instruments, also experienced FMS and radar failures with audio warnings of electrical bus failures, crew requested to divert back to home base (nearby pontiac airport). With IMC and further failures, crew declared an emergency and took vectors to pontiac. We broke out of IMC at 8000 ft with pontiac airport in sight and straight ahead. We continued to pontiac and landed uneventfully with continuous audio and master warning flashers. After landing, we shut the aircraft down at our base and coordinated with company maintenance and operations. Callback conversation with reporter revealed the following information: aircraft had just departed dtw. The #1 generator tripped for the second time. This time the bus tie relay failed to open. The crew followed the emergency checklist but was unable to open the bus tie manually. This caused the #1 generator to drag down the entire aircraft electrical system. This then caused all the remaining electrical problems. Company maintenance replaced the #1 generator, the generator control panel, the bus tie control panel, and the bus tie relay. Extensive maintenance inspection was performed on the remaining electrical relays to insure that they were serviceable. The company operates five of these aircraft and this is the first time a problem of this nature has surfaced.

Original NASA ASRS Text

Title: HS25 CREW HAD ELECTRICAL FAILURE ON CLBOUT FROM DTW.

Narrative: DURING APCH INTO WHITE PLAINS, NY, THE #1 GENERATOR TRIPPED, CREW LANDED AT DEST AND REINSTATED GENERATOR ON THE GND, THEN DEPARTED AND FLEW TO DETROIT METRO UNEVENTFUL, THEN DEPARTED DTW AND LOST #1 GENERATOR, AUTOPLT, YAW DAMPER, AIR DATA COMPUTER #2, ALL COPLT'S FLT INSTS AND PLT SIDE HEADING INSTS, ALSO EXPERIENCED FMS AND RADAR FAILURES WITH AUDIO WARNINGS OF ELECTRICAL BUS FAILURES, CREW REQUESTED TO DIVERT BACK TO HOME BASE (NEARBY PONTIAC ARPT). WITH IMC AND FURTHER FAILURES, CREW DECLARED AN EMER AND TOOK VECTORS TO PONTIAC. WE BROKE OUT OF IMC AT 8000 FT WITH PONTIAC ARPT IN SIGHT AND STRAIGHT AHEAD. WE CONTINUED TO PONTIAC AND LANDED UNEVENTFULLY WITH CONTINUOUS AUDIO AND MASTER WARNING FLASHERS. AFTER LNDG, WE SHUT THE ACFT DOWN AT OUR BASE AND COORDINATED WITH COMPANY MAINT AND OPS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: ACFT HAD JUST DEPARTED DTW. THE #1 GENERATOR TRIPPED FOR THE SECOND TIME. THIS TIME THE BUS TIE RELAY FAILED TO OPEN. THE CREW FOLLOWED THE EMER CHKLIST BUT WAS UNABLE TO OPEN THE BUS TIE MANUALLY. THIS CAUSED THE #1 GENERATOR TO DRAG DOWN THE ENTIRE ACFT ELECTRICAL SYS. THIS THEN CAUSED ALL THE REMAINING ELECTRICAL PROBS. COMPANY MAINT REPLACED THE #1 GENERATOR, THE GENERATOR CTL PANEL, THE BUS TIE CTL PANEL, AND THE BUS TIE RELAY. EXTENSIVE MAINT INSPECTION WAS PERFORMED ON THE REMAINING ELECTRICAL RELAYS TO INSURE THAT THEY WERE SERVICEABLE. THE COMPANY OPERATES FIVE OF THESE ACFT AND THIS IS THE FIRST TIME A PROB OF THIS NATURE HAS SURFACED.

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.