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Flight crew of a B757 started takeoff when the 'rudder ratio' light was lit but went out when takeoff power was applied.
| Attributes | |
| ACN | 274645 |
| Time | |
| Date | 199406 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : dca |
| State Reference | DC |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : takeoff ground : preflight |
| 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 : 16000 flight time type : 1400 |
| ASRS Report | 274645 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
When we arrived at the station we had a rudder ratio light illuminated. We wrote it up and maintenance cleared the write up by resetting circuit breakers. Upon taxiing out of the station the light illuminated again. The first officer and I talked it over and decided it would be ok to takeoff with the problem. The light went out when the power came up for takeoff. However, if it had not, a possible engine out control problem could have happened which neither of us thought of at the time. Contributing factors were fatigue (long duty day), poor interaction between captain and first officer and a little get homeitis. Callback conversation with reporter revealed the following information: reporter stated that the aircraft was a B757 and the incident location was washington national airport, dc. He mainly submitted the report to provide the human factors with regard to the fatigued attitude of the flight crew in going ahead with the takeoff even though the warning light reappeared during the initial start of takeoff. However, fortunately, the light went out when power was adjusted for takeoff.
Original NASA ASRS Text
Title: FLC OF A B757 STARTED TKOF WHEN THE 'RUDDER RATIO' LIGHT WAS LIT BUT WENT OUT WHEN TKOF PWR WAS APPLIED.
Narrative: WHEN WE ARRIVED AT THE STATION WE HAD A RUDDER RATIO LIGHT ILLUMINATED. WE WROTE IT UP AND MAINT CLRED THE WRITE UP BY RESETTING CIRCUIT BREAKERS. UPON TAXIING OUT OF THE STATION THE LIGHT ILLUMINATED AGAIN. THE FO AND I TALKED IT OVER AND DECIDED IT WOULD BE OK TO TKOF WITH THE PROB. THE LIGHT WENT OUT WHEN THE PWR CAME UP FOR TKOF. HOWEVER, IF IT HAD NOT, A POSSIBLE ENG OUT CTL PROB COULD HAVE HAPPENED WHICH NEITHER OF US THOUGHT OF AT THE TIME. CONTRIBUTING FACTORS WERE FATIGUE (LONG DUTY DAY), POOR INTERACTION BTWN CAPT AND FO AND A LITTLE GET HOMEITIS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE ACFT WAS A B757 AND THE INCIDENT LOCATION WAS WASHINGTON NATIONAL ARPT, DC. HE MAINLY SUBMITTED THE RPT TO PROVIDE THE HUMAN FACTORS WITH REGARD TO THE FATIGUED ATTITUDE OF THE FLC IN GOING AHEAD WITH THE TKOF EVEN THOUGH THE WARNING LIGHT REAPPEARED DURING THE INITIAL START OF TKOF. HOWEVER, FORTUNATELY, THE LIGHT WENT OUT WHEN PWR WAS ADJUSTED FOR TKOF.
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.