Takeoff aborted twice in an AT72. Master caution aircraft confign warning. PIC had thought it was a ...

Attributes
ACN	355374
Time
Date	199612
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bdl
State Reference	CT
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	ATR 72
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
Experience	flight time last 90 days : 240 flight time total : 9500 flight time type : 4500
ASRS Report	355374
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 190 flight time total : 2050 flight time type : 190
ASRS Report	354893
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : rejected takeoff other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

The following is information regarding flight xx, an aborted takeoff. After being cleared for takeoff on runway 6 at bdl, as I advanced the power I heard an aural sound. I assumed it was the flight attendant, after which we also got the confign warning. I aborted takeoff at which time tower asked what was the problem. I thought the flight attendant called during a critical phase of flight. (I assumed that a passenger got up out of his or her seat.) as we returned to the taxiway and stopped the aircraft, I called the flight attendant to see if she had called, she did not call. After which we tested the confign warning system and it checked ok, with no light illuminating and no warning. We taxied back for takeoff and did all the checklists. Again, we were cleared for takeoff on runway 6, and I advanced the power and got the confign warning. I aborted the takeoff and taxied back to the gate. During taxiing back to the gate, I noticed the parking brake light coming on and off, with it staying on after about 15 seconds. At the gate I wrote the discrepancy in the logbook. Maintenance discovered a faulty switch in the parking brake handle.

Original NASA ASRS Text

Title: TKOF ABORTED TWICE IN AN AT72. MASTER CAUTION ACFT CONFIGN WARNING. PIC HAD THOUGHT IT WAS A CABIN ATTENDANT CALL ON FIRST EVENT. HAD HEARD AUDITORY SIGNAL.

Narrative: THE FOLLOWING IS INFO REGARDING FLT XX, AN ABORTED TKOF. AFTER BEING CLRED FOR TKOF ON RWY 6 AT BDL, AS I ADVANCED THE PWR I HEARD AN AURAL SOUND. I ASSUMED IT WAS THE FLT ATTENDANT, AFTER WHICH WE ALSO GOT THE CONFIGN WARNING. I ABORTED TKOF AT WHICH TIME TWR ASKED WHAT WAS THE PROB. I THOUGHT THE FLT ATTENDANT CALLED DURING A CRITICAL PHASE OF FLT. (I ASSUMED THAT A PAX GOT UP OUT OF HIS OR HER SEAT.) AS WE RETURNED TO THE TXWY AND STOPPED THE ACFT, I CALLED THE FLT ATTENDANT TO SEE IF SHE HAD CALLED, SHE DID NOT CALL. AFTER WHICH WE TESTED THE CONFIGN WARNING SYS AND IT CHKED OK, WITH NO LIGHT ILLUMINATING AND NO WARNING. WE TAXIED BACK FOR TKOF AND DID ALL THE CHKLISTS. AGAIN, WE WERE CLRED FOR TKOF ON RWY 6, AND I ADVANCED THE PWR AND GOT THE CONFIGN WARNING. I ABORTED THE TKOF AND TAXIED BACK TO THE GATE. DURING TAXIING BACK TO THE GATE, I NOTICED THE PARKING BRAKE LIGHT COMING ON AND OFF, WITH IT STAYING ON AFTER ABOUT 15 SECONDS. AT THE GATE I WROTE THE DISCREPANCY IN THE LOGBOOK. MAINT DISCOVERED A FAULTY SWITCH IN THE PARKING BRAKE HANDLE.

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.

Takeoff aborted twice in an AT72. Master caution aircraft confign warning. PIC had thought it was a cabin attendant call on first event. Had heard auditory signal.