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Air carrier light transport crew suffers distraction with aircraft heading problem and overshot their altitude on departure from dfw.
| Attributes | |
| ACN | 371350 |
| Time | |
| Date | 199706 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 4000 msl bound upper : 4300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : commercial pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 7000 flight time type : 2000 |
| ASRS Report | 371350 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During climb, the control warning panel indicated a fault in the heading comparator. This occurred during the completion of the climb checklist and interrupted the process. Because both crew members are required to use a heading slave button on their respective side to reset the system our attention was diverted to the heading problem. At our climb rate and close proximity to our leveloff our altitude deviated no more than 300 ft. After departure control asked us to maintain 4000 ft we corrected the altitude. The situation could possibly have been avoided by only one person trying to correct the heading error. This is difficult because of the location of the slave button on the opposing side.
Original NASA ASRS Text
Title: ACR LTT CREW SUFFERS DISTR WITH ACFT HEADING PROB AND OVERSHOT THEIR ALT ON DEP FROM DFW.
Narrative: DURING CLB, THE CTL WARNING PANEL INDICATED A FAULT IN THE HEADING COMPARATOR. THIS OCCURRED DURING THE COMPLETION OF THE CLB CHKLIST AND INTERRUPTED THE PROCESS. BECAUSE BOTH CREW MEMBERS ARE REQUIRED TO USE A HEADING SLAVE BUTTON ON THEIR RESPECTIVE SIDE TO RESET THE SYS OUR ATTN WAS DIVERTED TO THE HEADING PROB. AT OUR CLB RATE AND CLOSE PROX TO OUR LEVELOFF OUR ALT DEVIATED NO MORE THAN 300 FT. AFTER DEP CTL ASKED US TO MAINTAIN 4000 FT WE CORRECTED THE ALT. THE SIT COULD POSSIBLY HAVE BEEN AVOIDED BY ONLY ONE PERSON TRYING TO CORRECT THE HEADING ERROR. THIS IS DIFFICULT BECAUSE OF THE LOCATION OF THE SLAVE BUTTON ON THE OPPOSING SIDE.
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.