B757 flight crew declares an emergency after multiple system failures caused by a lightning strike o...

Attributes
ACN	615270
Time
Date	200404
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : slc.vor
State Reference	UT
Altitude	msl single value : 10000
Environment
Flight Conditions	IMC
Weather Elements	Ice Rain other
Light	Night
Aircraft 1
Controlling Facilities	tracon : s56.tracon
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach descent : intermediate altitude
Route In Use	approach : traffic pattern arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 150 flight time total : 12000 flight time type : 4000
ASRS Report	615270
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe inflight encounter : weather inflight encounter other
Independent Detector	aircraft equipment other aircraft equipment : eicas other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist flight crew : landed in emergency condition flight crew : exited adverse environment flight crew : declared emergency
Consequence	faa : reviewed incident with flight crew other
Supplementary
Problem Areas	Aircraft Weather
Primary Problem	Weather

Narrative:

On downwind, radar vectors with approach control. We were in light rain, light ride ice, radar returns precipitation only. Smooth rime when we were hit in the radome by lightning. A terrific boom and flash that temporarily blinded myself and the first officer. There was a smell of smoke and ozone in the cockpit with several EICAS messages of anomalies. The strike caused the radar screen to glow bright pink. Several lights burned out and our left yaw dampner disconnected. We assessed the situation and I declared an emergency to get expedited handling not knowing how many electronic system might be compromised. The flight level mode of the autoplt (which had stayed engaged) was inoperative, so the first officer (PF) used vertical speed. We divided the workload and I took the QRH and accomplished the abnormal checklists, calmed the very concerned passenger (some of whom were concerned that we had been struck by an object) and coordinated time remaining, type of landing, actions on the ground, etc. The first officer flew and communicated with ATC. This system of division of labor works very well indeed. Approach and tower performed flawlessly and we turned in early, flew a smooth stabilized approach and the first officer executed a very smooth landing. Emergency personnel checked the aircraft for visible damage or fire and we taxied into the gate under our own power. Aircraft is down for maintenance.

Original NASA ASRS Text

Title: B757 FLT CREW DECLARES AN EMER AFTER MULTIPLE SYS FAILURES CAUSED BY A LIGHTNING STRIKE ON APCH TO SLC.

Narrative: ON DOWNWIND, RADAR VECTORS WITH APCH CTL. WE WERE IN LIGHT RAIN, LIGHT RIDE ICE, RADAR RETURNS PRECIPITATION ONLY. SMOOTH RIME WHEN WE WERE HIT IN THE RADOME BY LIGHTNING. A TERRIFIC BOOM AND FLASH THAT TEMPORARILY BLINDED MYSELF AND THE FO. THERE WAS A SMELL OF SMOKE AND OZONE IN THE COCKPIT WITH SEVERAL EICAS MESSAGES OF ANOMALIES. THE STRIKE CAUSED THE RADAR SCREEN TO GLOW BRIGHT PINK. SEVERAL LIGHTS BURNED OUT AND OUR L YAW DAMPNER DISCONNECTED. WE ASSESSED THE SIT AND I DECLARED AN EMER TO GET EXPEDITED HANDLING NOT KNOWING HOW MANY ELECTRONIC SYS MIGHT BE COMPROMISED. THE FLT LEVEL MODE OF THE AUTOPLT (WHICH HAD STAYED ENGAGED) WAS INOP, SO THE FO (PF) USED VERT SPD. WE DIVIDED THE WORKLOAD AND I TOOK THE QRH AND ACCOMPLISHED THE ABNORMAL CHKLISTS, CALMED THE VERY CONCERNED PAX (SOME OF WHOM WERE CONCERNED THAT WE HAD BEEN STRUCK BY AN OBJECT) AND COORDINATED TIME REMAINING, TYPE OF LNDG, ACTIONS ON THE GND, ETC. THE FO FLEW AND COMMUNICATED WITH ATC. THIS SYS OF DIVISION OF LABOR WORKS VERY WELL INDEED. APCH AND TWR PERFORMED FLAWLESSLY AND WE TURNED IN EARLY, FLEW A SMOOTH STABILIZED APCH AND THE FO EXECUTED A VERY SMOOTH LNDG. EMER PERSONNEL CHKED THE ACFT FOR VISIBLE DAMAGE OR FIRE AND WE TAXIED INTO THE GATE UNDER OUR OWN PWR. ACFT IS DOWN FOR MAINT.

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.

B757 flight crew declares an emergency after multiple system failures caused by a lightning strike on approach to slc.