Air carrier medium large transport takeoff abort when takeoff warning horn sounded as takeoff thrust...

Attributes
ACN	141789
Time
Date	199004
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax
State Reference	CA
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	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer pilot : instrument pilot : commercial
Experience	flight time last 90 days : 300 flight time total : 17600 flight time type : 6000
ASRS Report	141789
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Flaps 5 degrees were selected for departure when beginning to taxi. Before takeoff checklist was completed and flaps and led's were observed at 5 degrees with 'left.east. Flap ext' green light on during checklist. Upon start of takeoff roll, as power was advanced, the takeoff confign warning horn sounded. Takeoff was rejected well below 60 KTS. While taxiing off the runway the led's were visually observed to be extended, however the left.east. Flap ext green light was out and the overhead left.east. Devices annunciator was completely blank (although all lights tested). Upon return to the gate, the left.east. Flap position indicator circuit breaker was observed to be popped (although, while taxiing back to gate, all the flight control and hydraulic circuit breaker's were checked and seemed to be in). Maintenance changed control box associated with this system and aircraft was released for flight.

Original NASA ASRS Text

Title: ACR MLG TKOF ABORT WHEN TKOF WARNING HORN SOUNDED AS TKOF THRUST WAS APPLIED.

Narrative: FLAPS 5 DEGS WERE SELECTED FOR DEP WHEN BEGINNING TO TAXI. BEFORE TKOF CHKLIST WAS COMPLETED AND FLAPS AND LED'S WERE OBSERVED AT 5 DEGS WITH 'L.E. FLAP EXT' GREEN LIGHT ON DURING CHKLIST. UPON START OF TKOF ROLL, AS PWR WAS ADVANCED, THE TKOF CONFIGN WARNING HORN SOUNDED. TKOF WAS REJECTED WELL BELOW 60 KTS. WHILE TAXIING OFF THE RWY THE LED'S WERE VISUALLY OBSERVED TO BE EXTENDED, HOWEVER THE L.E. FLAP EXT GREEN LIGHT WAS OUT AND THE OVERHEAD L.E. DEVICES ANNUNCIATOR WAS COMPLETELY BLANK (ALTHOUGH ALL LIGHTS TESTED). UPON RETURN TO THE GATE, THE L.E. FLAP POS INDICATOR CB WAS OBSERVED TO BE POPPED (ALTHOUGH, WHILE TAXIING BACK TO GATE, ALL THE FLT CTL AND HYD CB'S WERE CHKED AND SEEMED TO BE IN). MAINT CHANGED CTL BOX ASSOCIATED WITH THIS SYS AND ACFT WAS RELEASED FOR FLT.

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.

Air carrier medium large transport takeoff abort when takeoff warning horn sounded as takeoff thrust was applied.