Takeoff aborted due to aircraft equipment problem malfunction.

Attributes
ACN	272050
Time
Date	199405
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : btv
State Reference	VT
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	SF 340A
Operating Under FAR Part	Part 135
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 5700 flight time type : 2000
ASRS Report	272050
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : rejected takeoff flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

During takeoff with first officer at the controls, we aborted due to nose vibration. We taxied back to gate to inspect problem. During taxi I noticed nothing wrong and everything seemed normal. Upon reaching the gate I shut down the left engine and went outside to inspect nose gear. I noticed nothing wrong, not even a flat tire. I have over 2000 hours in this aircraft and I've experienced this before as simply a slightly loose shimmy damper that occurs on a lot of aircraft that have many hours of usage. We discussed the problem and the first officer and myself decided that it was safe to continue and we took off without further incident. Upon reaching our destination, maintenance met the aircraft. They confirmed that there was nothing wrong. They did change nosewheel tires though to possibly correct a bad tire with inner separation. I did not write up the abort in the maintenance logbook nor talk with maintenance prior to takeoff because I've had several similar occurrences before and felt that it did not warrant further investigation. I asked the mechanic if he wanted me to write it up and he replied it didn't matter, it was something simple and not to worry about it so I didn't.

Original NASA ASRS Text

Title: TKOF ABORTED DUE TO ACFT EQUIP PROB MALFUNCTION.

Narrative: DURING TKOF WITH FO AT THE CTLS, WE ABORTED DUE TO NOSE VIBRATION. WE TAXIED BACK TO GATE TO INSPECT PROB. DURING TAXI I NOTICED NOTHING WRONG AND EVERYTHING SEEMED NORMAL. UPON REACHING THE GATE I SHUT DOWN THE L ENG AND WENT OUTSIDE TO INSPECT NOSE GEAR. I NOTICED NOTHING WRONG, NOT EVEN A FLAT TIRE. I HAVE OVER 2000 HRS IN THIS ACFT AND I'VE EXPERIENCED THIS BEFORE AS SIMPLY A SLIGHTLY LOOSE SHIMMY DAMPER THAT OCCURS ON A LOT OF ACFT THAT HAVE MANY HRS OF USAGE. WE DISCUSSED THE PROB AND THE FO AND MYSELF DECIDED THAT IT WAS SAFE TO CONTINUE AND WE TOOK OFF WITHOUT FURTHER INCIDENT. UPON REACHING OUR DEST, MAINT MET THE ACFT. THEY CONFIRMED THAT THERE WAS NOTHING WRONG. THEY DID CHANGE NOSEWHEEL TIRES THOUGH TO POSSIBLY CORRECT A BAD TIRE WITH INNER SEPARATION. I DID NOT WRITE UP THE ABORT IN THE MAINT LOGBOOK NOR TALK WITH MAINT PRIOR TO TKOF BECAUSE I'VE HAD SEVERAL SIMILAR OCCURRENCES BEFORE AND FELT THAT IT DID NOT WARRANT FURTHER INVESTIGATION. I ASKED THE MECH IF HE WANTED ME TO WRITE IT UP AND HE REPLIED IT DIDN'T MATTER, IT WAS SOMETHING SIMPLE AND NOT TO WORRY ABOUT IT SO I DIDN'T.

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.