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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier flight crew in a BE1900 descended below their cleared altitude by 400 ft while in their turn from base to final at den.
| Attributes | |
| ACN | 345390 |
| Time | |
| Date | 199608 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | msl bound lower : 7600 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : den |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| 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 |
| Experience | flight time last 90 days : 240 flight time total : 3400 flight time type : 3000 |
| ASRS Report | 345390 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : far non adherence : clearance |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Cleared to descend from 11000 ft to 8000 ft. Received a turn to base leg and descended through altitude to 7600 ft. Subsequently cleared for visual. Down drafts in area were contributing factors in event. Returned to cleared altitude immediately.
Original NASA ASRS Text
Title: AN ACR FLC IN A BE1900 DSNDED BELOW THEIR CLRED ALT BY 400 FT WHILE IN THEIR TURN FROM BASE TO FINAL AT DEN.
Narrative: CLRED TO DSND FROM 11000 FT TO 8000 FT. RECEIVED A TURN TO BASE LEG AND DSNDED THROUGH ALT TO 7600 FT. SUBSEQUENTLY CLRED FOR VISUAL. DOWN DRAFTS IN AREA WERE CONTRIBUTING FACTORS IN EVENT. RETURNED TO CLRED ALT IMMEDIATELY.
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.