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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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PF captain, misheard cleared altitude while first officer distracted with PA announcement. Captain selected incorrect altitude in alerter and when descending through the assigned altitude, ATC intervened. Flight crew returned aircraft to cleared altitude.
| Attributes | |
| ACN | 323740 |
| Time | |
| Date | 199512 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : atl |
| State Reference | GA |
| Altitude | msl bound lower : 10500 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 4000 |
| ASRS Report | 323740 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 225 flight time total : 12000 flight time type : 100 |
| ASRS Report | 323733 |
| Events | |
| Anomaly | altitude deviation : overshoot altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other controllera |
| 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:
We were flying lagrange arrival into atl and were descending to 11000 ft. During descent controller directed us to 'slow to 210 KTS.' first officer read back clearance. Captain thought he heard 'cleared to 10.' he selected 10000 ft in altitude window and continued descent. At 10500 ft controller again advised 'maintain 11000 ft.' captain complied, no conflicts noted.
Original NASA ASRS Text
Title: PF CAPT, MISHEARD CLRED ALT WHILE FO DISTRACTED WITH PA ANNOUNCEMENT. CAPT SELECTED INCORRECT ALT IN ALERTER AND WHEN DSNDING THROUGH THE ASSIGNED ALT, ATC INTERVENED. FLC RETURNED ACFT TO CLRED ALT.
Narrative: WE WERE FLYING LAGRANGE ARR INTO ATL AND WERE DSNDING TO 11000 FT. DURING DSCNT CTLR DIRECTED US TO 'SLOW TO 210 KTS.' FO READ BACK CLRNC. CAPT THOUGHT HE HEARD 'CLRED TO 10.' HE SELECTED 10000 FT IN ALT WINDOW AND CONTINUED DSCNT. AT 10500 FT CTLR AGAIN ADVISED 'MAINTAIN 11000 FT.' CAPT COMPLIED, NO CONFLICTS 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.