<< >> NASA ASRS Report 139875, March 1990

Air carrier large transport aborted takeoff when a required light for system operation failed to come on with throttle advancement.

Attributes
ACN	139875
Time
Date	199003
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl
State Reference	GA
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	Large Transport, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : private pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 210 flight time total : 2800 flight time type : 1000
ASRS Report	139875
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Green and pack trip light on second officer's panel burned out between the panel check and takeoff. No green light came on during takeoff and aborted takeoff at around 10-15 KTS. Pressed to test bulb after complying with procedures, replaced bulb and returned for takeoff. Automatic-pack system was working because both packs tripped off when throttles brought back to idle. Got a good green light on subsequent takeoff when we checked the operations manual for brake energy limits, 10-15 KTS was not on the scale. Crew determined that no maintenance was required since automatic-pack system worked on the abort.

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Original NASA ASRS Text

Title: ACR LGT ABORTED TKOF WHEN A REQUIRED LIGHT FOR SYSTEM OPERATION FAILED TO COME ON WITH THROTTLE ADVANCEMENT.

Narrative: GREEN AND PACK TRIP LIGHT ON S/O'S PANEL BURNED OUT BTWN THE PANEL CHK AND TKOF. NO GREEN LIGHT CAME ON DURING TKOF AND ABORTED TKOF AT AROUND 10-15 KTS. PRESSED TO TEST BULB AFTER COMPLYING WITH PROCS, REPLACED BULB AND RETURNED FOR TKOF. AUTO-PACK SYSTEM WAS WORKING BECAUSE BOTH PACKS TRIPPED OFF WHEN THROTTLES BROUGHT BACK TO IDLE. GOT A GOOD GREEN LIGHT ON SUBSEQUENT TKOF WHEN WE CHKED THE OPS MANUAL FOR BRAKE ENERGY LIMITS, 10-15 KTS WAS NOT ON THE SCALE. CREW DETERMINED THAT NO MAINT WAS REQUIRED SINCE AUTO-PACK SYS WORKED ON THE ABORT.

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.