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An air carrier medium large transport flight crew descends below assigned altitude while resetting flight system after an unexpected approach change.
| Attributes | |
| ACN | 342950 |
| Time | |
| Date | 199607 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 3500 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw tower : lit |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 9000 flight time type : 1200 |
| ASRS Report | 342950 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : commercial pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 1000 |
| ASRS Report | 342635 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : far non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Happened during radar vectors to final approach course runway 17C at dfw about 5 mi north of airport. Assigned 4000 ft and to expedite descent. ATC changed from runway 18R to runway 17C and in the busy time setting up for changed runway descended through 4000 ft. ATC a couple seconds later cleared us for a visual approach. No known conflict with any other aircraft and no TCASII advisories. Corrective action is on busy times during runway changes to maintain altitude awareness.
Original NASA ASRS Text
Title: AN ACR MLG FLC DSNDS BELOW ASSIGNED ALT WHILE RESETTING FLT SYS AFTER AN UNEXPECTED APCH CHANGE.
Narrative: HAPPENED DURING RADAR VECTORS TO FINAL APCH COURSE RWY 17C AT DFW ABOUT 5 MI N OF ARPT. ASSIGNED 4000 FT AND TO EXPEDITE DSCNT. ATC CHANGED FROM RWY 18R TO RWY 17C AND IN THE BUSY TIME SETTING UP FOR CHANGED RWY DSNDED THROUGH 4000 FT. ATC A COUPLE SECONDS LATER CLRED US FOR A VISUAL APCH. NO KNOWN CONFLICT WITH ANY OTHER ACFT AND NO TCASII ADVISORIES. CORRECTIVE ACTION IS ON BUSY TIMES DURING RWY CHANGES TO MAINTAIN ALT AWARENESS.
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.