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A fatigued flight crew distracted by WX and radio problems forgot to reset their altimeters descending through FL180 and level off too low. The flight crew and the approach controller recognize the error at about the same time and there was no conflict.
| Attributes | |
| ACN | 319790 |
| Time | |
| Date | 199510 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : bdl |
| State Reference | CT |
| Altitude | msl bound lower : 14000 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bdl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : private pilot : flight engineer |
| Experience | flight time last 90 days : 100 flight time total : 6000 flight time type : 3800 |
| ASRS Report | 319790 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 60 flight time total : 4500 flight time type : 50 |
| ASRS Report | 319789 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : far |
| Independent Detector | other controllera other flight crewa |
| 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:
Flight crew up all night with delayed departure from mem. Crew exhausted starting descent. Area arrival WX with heavy rain and scattered thunderstorms. Crew attention diverted due to storms over field and circumnavigating cells. Descended thru 18000 ft and neglected to reset altimeter to local setting of 29.39. Leveled off at 14000 ft MSL but actually 400 ft low. As flight crew realized mistake controller contacted crew on deviation.
Original NASA ASRS Text
Title: A FATIGUED FLC DISTRACTED BY WX AND RADIO PROBS FORGOT TO RESET THEIR ALTIMETERS DSNDING THROUGH FL180 AND LEVEL OFF TOO LOW. THE FLC AND THE APCH CTLR RECOGNIZE THE ERROR AT ABOUT THE SAME TIME AND THERE WAS NO CONFLICT.
Narrative: FLC UP ALL NIGHT WITH DELAYED DEP FROM MEM. CREW EXHAUSTED STARTING DSCNT. AREA ARR WX WITH HVY RAIN AND SCATTERED TSTMS. CREW ATTENTION DIVERTED DUE TO STORMS OVER FIELD AND CIRCUMNAVIGATING CELLS. DSNDED THRU 18000 FT AND NEGLECTED TO RESET ALTIMETER TO LCL SETTING OF 29.39. LEVELED OFF AT 14000 FT MSL BUT ACTUALLY 400 FT LOW. AS FLC REALIZED MISTAKE CTLR CONTACTED CREW ON DEV.
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.