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A descending carj PIC missets the altimeter to a too high a setting and descends 1000 ft below his assigned altitude by approach controller 50 mi north of tri, tn.
| Attributes | |
| ACN | 467432 |
| Time | |
| Date | 200003 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : tri.airport |
| State Reference | TN |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tri.tracon tracon : l30.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 270 flight time total : 20000 flight time type : 6000 |
| ASRS Report | 467432 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : overshoot inflight encounter : turbulence non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : became reoriented flight crew : returned to assigned altitude none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Weather ATC Human Performance Environmental Factor Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared to 11000 ft by center. There was a SIGMET out for moderate to severe turbulence at the lower altitudes. We were busy, and therefore somewhat distraction, with checklists briefings and the turbulence. The altimeter setting was very low at 29.36 and I set in 30.36. The error was not caught by myself or my first officer until it was too late. I believe that fatigue may have been a contributing factors. Neither center nor approach even commented on my error, and I don't believe a conflict was created.
Original NASA ASRS Text
Title: A DSNDING CARJ PIC MISSETS THE ALTIMETER TO A TOO HIGH A SETTING AND DSNDS 1000 FT BELOW HIS ASSIGNED ALT BY APCH CTLR 50 MI N OF TRI, TN.
Narrative: WE WERE CLRED TO 11000 FT BY CTR. THERE WAS A SIGMET OUT FOR MODERATE TO SEVERE TURB AT THE LOWER ALTS. WE WERE BUSY, AND THEREFORE SOMEWHAT DISTR, WITH CHKLISTS BRIEFINGS AND THE TURB. THE ALTIMETER SETTING WAS VERY LOW AT 29.36 AND I SET IN 30.36. THE ERROR WAS NOT CAUGHT BY MYSELF OR MY FO UNTIL IT WAS TOO LATE. I BELIEVE THAT FATIGUE MAY HAVE BEEN A CONTRIBUTING FACTORS. NEITHER CTR NOR APCH EVEN COMMENTED ON MY ERROR, AND I DON'T BELIEVE A CONFLICT WAS CREATED.
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.