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Cpr aircraft flight crew uses wrong altimeter setting and is close to 1000 ft above assigned altitude when the level off. Departure controller catches the error.
| Attributes | |
| ACN | 363990 |
| Time | |
| Date | 199703 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : elm |
| State Reference | NY |
| Altitude | msl bound lower : 8000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : elm |
| Operator | general aviation : corporate |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude cruise other ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 90 flight time total : 4700 flight time type : 1200 |
| ASRS Report | 363990 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 11941 flight time type : 3000 |
| ASRS Report | 363987 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Prior to departure, both altimeters were set according to what we thought ground control issued us. We were unable to acquire ATIS due to the location of the aircraft on the field. The difference between the previous altimeter setting and the one issued by ground control was approximately 4/100 inches, not unusual if the aircraft had flown the day before. The situation was discovered by ZOB who owns the airspace above 8000 ft. We were cleared to 8000 ft but due to the altimeter setting being approximately 1 inch off in setting, we were in fact level at 8600 ft. Elmira departure alerted us to the fact our altitude was showing us level at 9000 ft. We immediately checked the transponder altitude which indicated 8600 ft, followed by a request for a current altimeter setting. It was then we determined the error and made the proper correction, descended back to 8000 ft and contacted ZOB who cleared us up to FL200.
Original NASA ASRS Text
Title: CPR ACFT FLC USES WRONG ALTIMETER SETTING AND IS CLOSE TO 1000 FT ABOVE ASSIGNED ALT WHEN THE LEVEL OFF. DEP CTLR CATCHES THE ERROR.
Narrative: PRIOR TO DEP, BOTH ALTIMETERS WERE SET ACCORDING TO WHAT WE THOUGHT GND CTL ISSUED US. WE WERE UNABLE TO ACQUIRE ATIS DUE TO THE LOCATION OF THE ACFT ON THE FIELD. THE DIFFERENCE BTWN THE PREVIOUS ALTIMETER SETTING AND THE ONE ISSUED BY GND CTL WAS APPROX 4/100 INCHES, NOT UNUSUAL IF THE ACFT HAD FLOWN THE DAY BEFORE. THE SIT WAS DISCOVERED BY ZOB WHO OWNS THE AIRSPACE ABOVE 8000 FT. WE WERE CLRED TO 8000 FT BUT DUE TO THE ALTIMETER SETTING BEING APPROX 1 INCH OFF IN SETTING, WE WERE IN FACT LEVEL AT 8600 FT. ELMIRA DEP ALERTED US TO THE FACT OUR ALT WAS SHOWING US LEVEL AT 9000 FT. WE IMMEDIATELY CHKED THE XPONDER ALT WHICH INDICATED 8600 FT, FOLLOWED BY A REQUEST FOR A CURRENT ALTIMETER SETTING. IT WAS THEN WE DETERMINED THE ERROR AND MADE THE PROPER CORRECTION, DSNDED BACK TO 8000 FT AND CONTACTED ZOB WHO CLRED US UP TO FL200.
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.