A B757-200 in takeoff climb at 800 ft declared an emergency and diverted due to left engine vibratio...

Attributes
ACN	529318
Time
Date	200111
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 800
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	529318
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : landed in emergency condition flight crew : declared emergency flight crew : diverted to another airport
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Autothrottles engaged and armed between 600-800 ft AGL, prior to any reduction of power, vibration of moderate intensity felt, noticed left engine egt 944 degrees subsequent engine overheat EICAS. Within 5-10 seconds crew reduced left throttle to mid position. Vibration stopped. Other left engine parameters were normal. Crew went through engine fire/failure/shutdown checklist with modifications, keeping the left engine operating at idle power. Landed on runway 18R with fire trucks standing by. Tower, departure and tower for landing were very helpful and expeditious. Excellent landing and rollout by first officer. Callback conversation with reporter revealed the following information: the reporter stated maintenance reported the cause of the engine vibrations and high egt was a failed open surge bleed valve.

Original NASA ASRS Text

Title: A B757-200 IN TKOF CLB AT 800 FT DECLARED AN EMER AND DIVERTED DUE TO L ENG VIBRATION AND HIGH EGT.

Narrative: AUTOTHROTTLES ENGAGED AND ARMED BTWN 600-800 FT AGL, PRIOR TO ANY REDUCTION OF PWR, VIBRATION OF MODERATE INTENSITY FELT, NOTICED L ENG EGT 944 DEGS SUBSEQUENT ENG OVERHEAT EICAS. WITHIN 5-10 SECONDS CREW REDUCED L THROTTLE TO MID POS. VIBRATION STOPPED. OTHER L ENG PARAMETERS WERE NORMAL. CREW WENT THROUGH ENG FIRE/FAILURE/SHUTDOWN CHKLIST WITH MODIFICATIONS, KEEPING THE L ENG OPERATING AT IDLE PWR. LANDED ON RWY 18R WITH FIRE TRUCKS STANDING BY. TWR, DEP AND TWR FOR LNDG WERE VERY HELPFUL AND EXPEDITIOUS. EXCELLENT LNDG AND ROLLOUT BY FO. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED MAINT RPTED THE CAUSE OF THE ENG VIBRATIONS AND HIGH EGT WAS A FAILED OPEN SURGE BLEED VALVE.

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.

A B757-200 in takeoff climb at 800 ft declared an emergency and diverted due to left engine vibration and high egt.