Air carrier medium large transport takeoff abort because a yellow master caution light came on befor...

Attributes
ACN	153102
Time
Date	199008
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
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
Experience	flight time last 90 days : 200 flight time total : 10000
ASRS Report	153102
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : declared emergency flight crew : rejected takeoff other
Consequence	Other Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

At 95 KTS a yellow master caution light for the hydraulic flight control system lit up so I rejected the takeoff. None of the lights that the master light is triggered by had lit up. As soon as I hit the brakes the master went out, it was on only for about 3-4 seconds. Once stopped and squared away I tested the system and its associated lights and all tested normal, so I decided it was a momentary glitch in the warning system. Since it was an oddball warning indication I thought I had a clean a/C. I proceeded to fly to destination. At destination, I wrote up the glitch and the mechanics found a problem in one of the switches. In retrospect, if it's bad enough to abort then it's bad enough to go talk to a mechanic before flight, not after flight! Contributing factor. I'm a new captain and I was embarrassed at inconveniencing everyone. Sounds stupid now.

Original NASA ASRS Text

Title: ACR MLG TKOF ABORT BECAUSE A YELLOW MASTER CAUTION LIGHT CAME ON BEFORE V1.

Narrative: AT 95 KTS A YELLOW MASTER CAUTION LIGHT FOR THE HYD FLT CTL SYS LIT UP SO I REJECTED THE TKOF. NONE OF THE LIGHTS THAT THE MASTER LIGHT IS TRIGGERED BY HAD LIT UP. AS SOON AS I HIT THE BRAKES THE MASTER WENT OUT, IT WAS ON ONLY FOR ABOUT 3-4 SECS. ONCE STOPPED AND SQUARED AWAY I TESTED THE SYS AND ITS ASSOCIATED LIGHTS AND ALL TESTED NORMAL, SO I DECIDED IT WAS A MOMENTARY GLITCH IN THE WARNING SYS. SINCE IT WAS AN ODDBALL WARNING INDICATION I THOUGHT I HAD A CLEAN A/C. I PROCEEDED TO FLY TO DEST. AT DEST, I WROTE UP THE GLITCH AND THE MECHS FOUND A PROB IN ONE OF THE SWITCHES. IN RETROSPECT, IF IT'S BAD ENOUGH TO ABORT THEN IT'S BAD ENOUGH TO GO TALK TO A MECH BEFORE FLT, NOT AFTER FLT! CONTRIBUTING FACTOR. I'M A NEW CAPT AND I WAS EMBARRASSED AT INCONVENIENCING EVERYONE. SOUNDS STUPID NOW.

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 because a yellow master caution light came on before V1.