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Mdt crew misset their altimeter by 1 inch. This resulted in the aircraft being 1000 ft low. Crew was also concerned with the intelligibility of the computer generated voice on the ATIS broadcast.
| Attributes | |
| ACN | 419635 |
| Time | |
| Date | 199811 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : msp |
| State Reference | MN |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 260 flight time total : 10000 flight time type : 3000 |
| ASRS Report | 419635 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : published procedure non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Upon receipt of arrival ATIS at msp, we set qnh meter at 29.73 msp. Our clearance was to descend to 11000 ft. We leveled at 11000 ft and was there for about 3 mins when the center controller asked for our altitude, which we reported as 11000 ft with 29.73 on the altimeter. He replied that the meter was really low, qnh was at 28.73 at that time. That put us at 10000 ft, which we reported and he said to stay there and he would hand us off to msp approach control at 10000 ft. There were no conflicts noted. It should be noted that I feel the poor quality of the automated ATIS voice and the refusal of the FAA to do anything to stop it contributed to the problem.
Original NASA ASRS Text
Title: MDT CREW MISSET THEIR ALTIMETER BY 1 INCH. THIS RESULTED IN THE ACFT BEING 1000 FT LOW. CREW WAS ALSO CONCERNED WITH THE INTELLIGIBILITY OF THE COMPUTER GENERATED VOICE ON THE ATIS BROADCAST.
Narrative: UPON RECEIPT OF ARR ATIS AT MSP, WE SET QNH METER AT 29.73 MSP. OUR CLRNC WAS TO DSND TO 11000 FT. WE LEVELED AT 11000 FT AND WAS THERE FOR ABOUT 3 MINS WHEN THE CTR CTLR ASKED FOR OUR ALT, WHICH WE RPTED AS 11000 FT WITH 29.73 ON THE ALTIMETER. HE REPLIED THAT THE METER WAS REALLY LOW, QNH WAS AT 28.73 AT THAT TIME. THAT PUT US AT 10000 FT, WHICH WE RPTED AND HE SAID TO STAY THERE AND HE WOULD HAND US OFF TO MSP APCH CTL AT 10000 FT. THERE WERE NO CONFLICTS NOTED. IT SHOULD BE NOTED THAT I FEEL THE POOR QUALITY OF THE AUTOMATED ATIS VOICE AND THE REFUSAL OF THE FAA TO DO ANYTHING TO STOP IT CONTRIBUTED TO THE PROB.
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.