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Widebody transport flight crew had improperly set their altimeter. A descent to cleared altitude resulted in an actual overshoot. Crew corrected immediately. PIC had 50 hours in type.
| Attributes | |
| ACN | 366840 |
| Time | |
| Date | 199704 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : atl |
| State Reference | GA |
| Altitude | msl bound lower : 10750 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other |
| Route In Use | enroute airway : atl enroute other |
| 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 : 25000 flight time type : 50 |
| ASRS Report | 366840 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : published procedure non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : became reoriented flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Aircraft descended approximately 200-250 ft below assigned altitude due to improperly set altimeter. Crew immediately caught mistake and aircraft was expeditiously returned to correct altitude without conflict.
Original NASA ASRS Text
Title: WDB FLC HAD IMPROPERLY SET THEIR ALTIMETER. A DSCNT TO CLRED ALT RESULTED IN AN ACTUAL OVERSHOOT. CREW CORRECTED IMMEDIATELY. PIC HAD 50 HRS IN TYPE.
Narrative: ACFT DSNDED APPROX 200-250 FT BELOW ASSIGNED ALT DUE TO IMPROPERLY SET ALTIMETER. CREW IMMEDIATELY CAUGHT MISTAKE AND ACFT WAS EXPEDITIOUSLY RETURNED TO CORRECT ALT WITHOUT CONFLICT.
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.