A B757-200 flight crew on takeoff noted captain's eadi blink off and on then heard a 'pop' in climb. Lost right forward and left center fuel pumps and equipment cooling. Declared emergency and diverted.

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Attributes
ACN	660106
Time
Date	200506
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 20000 flight time type : 1000
ASRS Report	660106
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : eicas warning other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : diverted to another airport
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During takeoff at 100 KTS; I noticed the ADI and navigation display blink off then on and heard a pop. We continued the takeoff and during climb discovered EICAS -- left aft fuel pump; right forward fuel pump; left center fuel pump; equipment cooling supply; center IRS on dc. Also we started to lose the color on the ADI and navigation display screens. We returned to ZZZ and landed overweight 212800 pounds. Callback conversation with reporter revealed the following information: the blinking of the eadi would come and go intermittently and then EICAS warning on the other system with fuel boost pump breaker trips. Maintenance found the left 'B' phase buss was the problem caused by a broken wire lug on the 'B' phase terminal of the left main power breaker.

Original NASA ASRS Text

Title: A B757-200 FLT CREW ON TKOF NOTED CAPT'S EADI BLINK OFF AND ON THEN HEARD A 'POP' IN CLB. LOST R FORWARD AND L CTR FUEL PUMPS AND EQUIP COOLING. DECLARED EMER AND DIVERTED.

Narrative: DURING TKOF AT 100 KTS; I NOTICED THE ADI AND NAV DISPLAY BLINK OFF THEN ON AND HEARD A POP. WE CONTINUED THE TKOF AND DURING CLB DISCOVERED EICAS -- L AFT FUEL PUMP; R FORWARD FUEL PUMP; L CTR FUEL PUMP; EQUIP COOLING SUPPLY; CTR IRS ON DC. ALSO WE STARTED TO LOSE THE COLOR ON THE ADI AND NAV DISPLAY SCREENS. WE RETURNED TO ZZZ AND LANDED OVERWT 212800 LBS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE BLINKING OF THE EADI WOULD COME AND GO INTERMITTENTLY AND THEN EICAS WARNING ON THE OTHER SYS WITH FUEL BOOST PUMP BREAKER TRIPS. MAINT FOUND THE L 'B' PHASE BUSS WAS THE PROB CAUSED BY A BROKEN WIRE LUG ON THE 'B' PHASE TERMINAL OF THE L MAIN PWR BREAKER.

Data retrieved from NASA's ASRS site as of January 2009 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.