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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A B727-200 in cruise reported a 700 ft error between captain's and first officer's altimeters and vsi differences caused by right side static ports taped over by maintenance.
| Attributes | |
| ACN | 371193 |
| Time | |
| Date | 199706 |
| Day | Tue |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : lit |
| State Reference | AR |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : private pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 30 flight time total : 4500 flight time type : 350 |
| ASRS Report | 371193 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 2700 flight time type : 150 |
| ASRS Report | 371348 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa other other : unspecified cockpit |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
Flight was originally aborted for #1 altimeter inoperative. After maintenance was performed, flight was resumed and large altimeter and vsi differences were noted at leveloff. Maintenance was contacted and we were told that they knew what the problem was and that there would be a sure fix at the destination. They indicated that the first officer side altimeter was correct. Upon arrival at destination, postflt revealed tape covering right side static ports. Cockpit indications matched when alternate static source was selected.
Original NASA ASRS Text
Title: A B727-200 IN CRUISE RPTED A 700 FT ERROR BTWN CAPT'S AND FO'S ALTIMETERS AND VSI DIFFERENCES CAUSED BY R SIDE STATIC PORTS TAPED OVER BY MAINT.
Narrative: FLT WAS ORIGINALLY ABORTED FOR #1 ALTIMETER INOP. AFTER MAINT WAS PERFORMED, FLT WAS RESUMED AND LARGE ALTIMETER AND VSI DIFFERENCES WERE NOTED AT LEVELOFF. MAINT WAS CONTACTED AND WE WERE TOLD THAT THEY KNEW WHAT THE PROB WAS AND THAT THERE WOULD BE A SURE FIX AT THE DEST. THEY INDICATED THAT THE FO SIDE ALTIMETER WAS CORRECT. UPON ARR AT DEST, POSTFLT REVEALED TAPE COVERING R SIDE STATIC PORTS. COCKPIT INDICATIONS MATCHED WHEN ALTERNATE STATIC SOURCE WAS SELECTED.
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.