Takeoff aborted after takeoff warning horn alerts crew.

Attributes
ACN	205949
Time
Date	199203
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : pbi
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 2700 flight time type : 325
ASRS Report	205949
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 3000
ASRS Report	205964
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : overcame equipment problem flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cleared for takeoff runway 27R pbi. I advanced the throttles and engaged the autothrottle at 70 percent N1. Takeoff warning horn sounded and the captain immediately recognized that the trim setting was not in the takeoff range. He called abort and I retarded the throttles. The captain took control of the aircraft and I advised tower that we were clearing the runway and that we wanted to taxi back to the departure end of the runway. We completed the before takeoff checklist again and took off after setting the correct trim. The taxi checklist had been completed, however, we were interrupted when we had to check data for our departure runway, as it was different from the one listed on our weight and balance. I had read the checklist item for 'stabilizer trim' and verified it with the percent mac, but failed to set the trim wheel due to our distraction. This was a case of reading the checklist but not completing the checklist item. With that interruption I should have started the taxi checklist from the beginning. Supplemental information from acn 205964: the runway was exited rather than continue the takeoff because significant pavement was utilized to analyze and correct the confign problem. This experience is another reminder that cockpit routine, when interrupted, is highly susceptible to error. When interruptions occur, little red flags should appear in our minds to remind us to 'watch out.'

Original NASA ASRS Text

Title: TKOF ABORTED AFTER TKOF WARNING HORN ALERTS CREW.

Narrative: CLRED FOR TKOF RWY 27R PBI. I ADVANCED THE THROTTLES AND ENGAGED THE AUTOTHROTTLE AT 70 PERCENT N1. TKOF WARNING HORN SOUNDED AND THE CAPT IMMEDIATELY RECOGNIZED THAT THE TRIM SETTING WAS NOT IN THE TKOF RANGE. HE CALLED ABORT AND I RETARDED THE THROTTLES. THE CAPT TOOK CTL OF THE ACFT AND I ADVISED TWR THAT WE WERE CLRING THE RWY AND THAT WE WANTED TO TAXI BACK TO THE DEP END OF THE RWY. WE COMPLETED THE BEFORE TKOF CHKLIST AGAIN AND TOOK OFF AFTER SETTING THE CORRECT TRIM. THE TAXI CHKLIST HAD BEEN COMPLETED, HOWEVER, WE WERE INTERRUPTED WHEN WE HAD TO CHK DATA FOR OUR DEP RWY, AS IT WAS DIFFERENT FROM THE ONE LISTED ON OUR WT AND BAL. I HAD READ THE CHKLIST ITEM FOR 'STABILIZER TRIM' AND VERIFIED IT WITH THE PERCENT MAC, BUT FAILED TO SET THE TRIM WHEEL DUE TO OUR DISTR. THIS WAS A CASE OF READING THE CHKLIST BUT NOT COMPLETING THE CHKLIST ITEM. WITH THAT INTERRUPTION I SHOULD HAVE STARTED THE TAXI CHKLIST FROM THE BEGINNING. SUPPLEMENTAL INFO FROM ACN 205964: THE RWY WAS EXITED RATHER THAN CONTINUE THE TKOF BECAUSE SIGNIFICANT PAVEMENT WAS UTILIZED TO ANALYZE AND CORRECT THE CONFIGN PROBLEM. THIS EXPERIENCE IS ANOTHER REMINDER THAT COCKPIT ROUTINE, WHEN INTERRUPTED, IS HIGHLY SUSCEPTIBLE TO ERROR. WHEN INTERRUPTIONS OCCUR, LITTLE RED FLAGS SHOULD APPEAR IN OUR MINDS TO REMIND US TO 'WATCH OUT.'

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.