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Flight crew of a B737-300 overshot assigned altitude during climb due to miss interpretation of the altitude to which cleared. ARTCC radar controller intervened and reiterated assigned altitude.
| Attributes | |
| ACN | 414070 |
| Time | |
| Date | 199809 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : aus |
| State Reference | TX |
| Altitude | msl bound lower : 22000 msl bound upper : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : zhu |
| 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 : 15000 |
| ASRS Report | 414070 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
En route aus-dal. Controller cleared us to what we thought he said, FL230. We read back FL230. At leveloff, the controller said he cleared us to FL220. We immediately descended. No conflict noted.
Original NASA ASRS Text
Title: FLC OF A B737-300 OVERSHOT ASSIGNED ALT DURING CLB DUE TO MISS INTERP OF THE ALT TO WHICH CLRED. ARTCC RADAR CTLR INTERVENED AND REITERATED ASSIGNED ALT.
Narrative: ENRTE AUS-DAL. CTLR CLRED US TO WHAT WE THOUGHT HE SAID, FL230. WE READ BACK FL230. AT LEVELOFF, THE CTLR SAID HE CLRED US TO FL220. WE IMMEDIATELY DSNDED. NO CONFLICT NOTED.
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.