<< >> NASA ASRS Report 439454, June 1999

An FK10 flight crew aborts their takeoff when #1 engine indicates a high vibration level on the EICAS system.

Attributes
ACN	439454
Time
Date	199906
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : rst.airport
State Reference	MN
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	439454
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : eicas other flight crewa
Resolutory Action	flight crew : rejected takeoff
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Aborted takeoff in rst for high engine vibration #1. Winds were southeasterly taking off runway 13. We made a rolling takeoff adding some power while facing into the wind. Prior to reaching 1.4 EPR, high vibration engine #1 enunciated. The engine #1 N1 vibration tape was high and there was a slight vibration in the airframe. Aborted takeoff about 60 KTS taxied clear. Ran #1 engine up to 1.4 EPR and the N2 vibration tape was high but just within limits. Retarded throttle, ran engine #1 up to 1.4, again engine vibration tape was higher than normal but within normal range. Returned to gate.

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Original NASA ASRS Text

Title: AN FK10 FLC ABORTS THEIR TKOF WHEN #1 ENG INDICATES A HIGH VIBRATION LEVEL ON THE EICAS SYS.

Narrative: ABORTED TKOF IN RST FOR HIGH ENG VIBRATION #1. WINDS WERE SOUTHEASTERLY TAKING OFF RWY 13. WE MADE A ROLLING TKOF ADDING SOME PWR WHILE FACING INTO THE WIND. PRIOR TO REACHING 1.4 EPR, HIGH VIBRATION ENG #1 ENUNCIATED. THE ENG #1 N1 VIBRATION TAPE WAS HIGH AND THERE WAS A SLIGHT VIBRATION IN THE AIRFRAME. ABORTED TKOF ABOUT 60 KTS TAXIED CLR. RAN #1 ENG UP TO 1.4 EPR AND THE N2 VIBRATION TAPE WAS HIGH BUT JUST WITHIN LIMITS. RETARDED THROTTLE, RAN ENG #1 UP TO 1.4, AGAIN ENG VIBRATION TAPE WAS HIGHER THAN NORMAL BUT WITHIN NORMAL RANGE. RETURNED TO GATE.

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.