<< >> NASA ASRS Report 297179, February 1995

Aircraft equipment problem -- takeoff warning horn without an aircraft confign problem. Takeoff aborted.

Attributes
ACN	297179
Time
Date	199502
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pbi
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 1500
ASRS Report	297179
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I advanced the throttles for takeoff power at pbi and received a takeoff warning horn (we checked the speed brake -- in but still had the horn). I called for reject and had the first officer advise the tower. We only had about 40 KIAS, so the reject was smooth and below automatic brake speed. I taxied clear of the runway, set the parking brake and reassessed the situation. We had 3.5 on trim, flaps 5 degrees, green light, speed brake -- in, and parking brake had been released (all required for no takeoff warn horn). Taxied back to the gate, made a logbook entry and called for maintenance. Maintenance (contract) ran a 6-8 page checklist which did not find a cause and after approximately 2 hour delay. Again taxied out and took off without a problem.

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Original NASA ASRS Text

Title: ACFT EQUIP PROB -- TKOF WARNING HORN WITHOUT AN ACFT CONFIGN PROB. TKOF ABORTED.

Narrative: I ADVANCED THE THROTTLES FOR TKOF PWR AT PBI AND RECEIVED A TKOF WARNING HORN (WE CHKED THE SPD BRAKE -- IN BUT STILL HAD THE HORN). I CALLED FOR REJECT AND HAD THE FO ADVISE THE TWR. WE ONLY HAD ABOUT 40 KIAS, SO THE REJECT WAS SMOOTH AND BELOW AUTO BRAKE SPD. I TAXIED CLR OF THE RWY, SET THE PARKING BRAKE AND REASSESSED THE SIT. WE HAD 3.5 ON TRIM, FLAPS 5 DEGS, GREEN LIGHT, SPD BRAKE -- IN, AND PARKING BRAKE HAD BEEN RELEASED (ALL REQUIRED FOR NO TKOF WARN HORN). TAXIED BACK TO THE GATE, MADE A LOGBOOK ENTRY AND CALLED FOR MAINT. MAINT (CONTRACT) RAN A 6-8 PAGE CHKLIST WHICH DID NOT FIND A CAUSE AND AFTER APPROX 2 HR DELAY. AGAIN TAXIED OUT AND TOOK OFF WITHOUT A PROB.

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.