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An MD88 flight crew incorrectly sets the altimeter and descends below assigned altitude.
| Attributes | |
| ACN | 579044 |
| Time | |
| Date | 200304 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : pvd.airport |
| State Reference | RI |
| Altitude | msl single value : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pvd.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 13000 flight time type : 2300 |
| ASRS Report | 579044 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 130 flight time total : 5300 flight time type : 1700 |
| ASRS Report | 579045 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem flight crew : overrode automation flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Cleared from FL190 to 11000 ft by ATC. Set altimeters to 29.51 as local setting. (First officer was flying, I got ATIS.) crosschecked settings and instrument readouts by observing last 2 digits in altimeter pressure window and 100's sweep hand of altimeter. Approaching 11000 ft, noticing altitude not captured and continuing descent through 11000 ft. Descent arrested at approximately 10650 ft and returned to 11000 ft. Then noticed upon closer scrutiny, first officer's altimeter setting of 30.51 and altitude of 1000 ft higher than captain's. Instrument was reset properly. From now on, will do a complete check of instruments to insure that what I see is what actually should be there. No conflict occurred as a result of this deviation.
Original NASA ASRS Text
Title: AN MD88 FLT CREW INCORRECTLY SETS THE ALTIMETER AND DSNDS BELOW ASSIGNED ALT.
Narrative: CLRED FROM FL190 TO 11000 FT BY ATC. SET ALTIMETERS TO 29.51 AS LCL SETTING. (FO WAS FLYING, I GOT ATIS.) XCHKED SETTINGS AND INST READOUTS BY OBSERVING LAST 2 DIGITS IN ALTIMETER PRESSURE WINDOW AND 100'S SWEEP HAND OF ALTIMETER. APCHING 11000 FT, NOTICING ALT NOT CAPTURED AND CONTINUING DSCNT THROUGH 11000 FT. DSCNT ARRESTED AT APPROX 10650 FT AND RETURNED TO 11000 FT. THEN NOTICED UPON CLOSER SCRUTINY, FO'S ALTIMETER SETTING OF 30.51 AND ALT OF 1000 FT HIGHER THAN CAPT'S. INST WAS RESET PROPERLY. FROM NOW ON, WILL DO A COMPLETE CHK OF INSTS TO INSURE THAT WHAT I SEE IS WHAT ACTUALLY SHOULD BE THERE. NO CONFLICT OCCURRED AS A RESULT OF THIS 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.