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Flight crew of an large transport failed to reset the altimeter during descent through FL180 resulting in overshooting assigned altitude.
| Attributes | |
| ACN | 299478 |
| Time | |
| Date | 199503 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : oxi |
| State Reference | IN |
| Altitude | msl bound lower : 16500 msl bound upper : 17000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star enroute airway : zau |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 180 flight time total : 12000 flight time type : 3400 |
| ASRS Report | 299478 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : instrument pilot : commercial pilot : flight engineer |
| Experience | flight time last 90 days : 175 flight time total : 10300 flight time type : 175 |
| ASRS Report | 299992 |
| Events | |
| Anomaly | altitude deviation : overshoot inflight encounter other non adherence : clearance other anomaly other |
| 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:
On descent from FL280 to 17000 ft, failed to reset altimeters to 29.36 from 29.92. ATC advised us that we were approaching 16500 ft. Altimeters were immediately reset and the altitude was immediately corrected to 17000 ft MSL. We were deviating around and over a line of thunderstorms and were somewhat distracted and failed to reset altimeters passing FL180. This once again underscores the importance of using checklists.
Original NASA ASRS Text
Title: FLC OF AN LGT FAILED TO RESET THE ALTIMETER DURING DSCNT THROUGH FL180 RESULTING IN OVERSHOOTING ASSIGNED ALT.
Narrative: ON DSCNT FROM FL280 TO 17000 FT, FAILED TO RESET ALTIMETERS TO 29.36 FROM 29.92. ATC ADVISED US THAT WE WERE APCHING 16500 FT. ALTIMETERS WERE IMMEDIATELY RESET AND THE ALT WAS IMMEDIATELY CORRECTED TO 17000 FT MSL. WE WERE DEVIATING AROUND AND OVER A LINE OF TSTMS AND WERE SOMEWHAT DISTRACTED AND FAILED TO RESET ALTIMETERS PASSING FL180. THIS ONCE AGAIN UNDERSCORES THE IMPORTANCE OF USING CHKLISTS.
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.