A B767-300 flight crew dumped fuel and returned to their departure airport after suffering an EFIS f...

Narrative:

We took off in a B767 at full takeoff gross weight. The captain was flying and shortly after takeoff the captain lost his ADI/HSI. He went to alternate flight instruments; getting his instruments back. However; a few seconds later; the EFIS started to flicker and he lost both alternate screens. We obtained a clearance to return to our departure airport and after discussing the matter with flight control and maintenance mutually decided with flight control to go ahead and dump fuel to decrease our landing weight. After dumping center tank fuel; we discussed with flight control and maintenance that it was going to take another four hours of burning fuel from the left and right tank to get to max landing weight. We again mutually decided to proceed and land 40;000 pounds over the max landing weight and have maintenance perform their overweight landing procedure. Since the captain's primary instruments were not reliable; control of the aircraft was given to me; the first officer; for the landing. We landed without incident in a very; very smooth landing and rollout using the full length of the runway and autobrakes two. ATC had the emergency equipment standing by. Other than that; all was normal as we taxied back to the ramp.

Original NASA ASRS Text

Title: A B767-300 flight crew dumped fuel and returned to their departure airport after suffering an EFIS failure which darkened the Captains NAV and PFD displays.

Narrative: We took off in a B767 at full takeoff gross weight. The Captain was flying and shortly after takeoff the Captain lost his ADI/HSI. He went to Alternate Flight Instruments; getting his instruments back. However; a few seconds later; the EFIS started to flicker and he lost both alternate screens. We obtained a clearance to return to our departure airport and after discussing the matter with Flight Control and Maintenance mutually decided with Flight Control to go ahead and dump fuel to decrease our landing weight. After dumping center tank fuel; we discussed with Flight Control and Maintenance that it was going to take another four hours of burning fuel from the left and right tank to get to max landing weight. We again mutually decided to proceed and land 40;000 LBS over the max landing weight and have maintenance perform their overweight landing procedure. Since the Captain's primary instruments were not reliable; control of the aircraft was given to me; the First Officer; for the landing. We landed without incident in a very; very smooth landing and rollout using the full length of the runway and autobrakes two. ATC had the emergency equipment standing by. Other than that; all was normal as we taxied back to the ramp.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	900821
Time
Date	201007
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	AHRS/ND
Person 1
Function	First Officer Pilot Not Flying
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Weight And Balance

A B767-300 flight crew dumped fuel and returned to their departure airport after suffering an EFIS failure which darkened the captains navigation and pfd displays.