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Captain of a B757-500 overshot intermediate altitude on descent due to forgetting to reset his altimeter descending below FL180. He noticed his mistake when comparing his altimeter indication to that of the first officer's since the first officer had reset his.
| Attributes | |
| ACN | 427570 |
| Time | |
| Date | 199902 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : fcm airport : msp |
| State Reference | MN |
| Altitude | msl bound lower : 10700 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star enroute airway : msp |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 10000 flight time type : 4000 |
| ASRS Report | 427570 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot other anomaly other |
| Independent Detector | other flight crewa |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | Pilot Deviation |
Narrative:
After receipt of digital ATIS over ACARS, I inadvertently misread the altimeter settings as 29.97 versus 29.27 (actual). I set 29.97 passing through FL180. There was a relatively high workload during this period, which resulted in a delayed 'approach descent checklist.' we leveled off at our assigned altitude of 11000 ft, based on my erroneous altimeter setting. The discrepancy was noticed as we simultaneously completed the checklist and observed the difference between my altimeter reading and that of the first officer's altimeter. I immediately reset my altimeter and initiated corrective action.
Original NASA ASRS Text
Title: CAPT OF A B757-500 OVERSHOT INTERMEDIATE ALT ON DSCNT DUE TO FORGETTING TO RESET HIS ALTIMETER DSNDING BELOW FL180. HE NOTICED HIS MISTAKE WHEN COMPARING HIS ALTIMETER INDICATION TO THAT OF THE FO'S SINCE THE FO HAD RESET HIS.
Narrative: AFTER RECEIPT OF DIGITAL ATIS OVER ACARS, I INADVERTENTLY MISREAD THE ALTIMETER SETTINGS AS 29.97 VERSUS 29.27 (ACTUAL). I SET 29.97 PASSING THROUGH FL180. THERE WAS A RELATIVELY HIGH WORKLOAD DURING THIS PERIOD, WHICH RESULTED IN A DELAYED 'APCH DSCNT CHKLIST.' WE LEVELED OFF AT OUR ASSIGNED ALT OF 11000 FT, BASED ON MY ERRONEOUS ALTIMETER SETTING. THE DISCREPANCY WAS NOTICED AS WE SIMULTANEOUSLY COMPLETED THE CHKLIST AND OBSERVED THE DIFFERENCE BTWN MY ALTIMETER READING AND THAT OF THE FO'S ALTIMETER. I IMMEDIATELY RESET MY ALTIMETER AND INITIATED CORRECTIVE ACTION.
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.