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ZTL alert E1120 flight crew of incorrect altitude. Flight crew determines problem captain's altimeter, which had recent maintenance.
| Attributes | |
| ACN | 498270 |
| Time | |
| Date | 200101 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : gqo.vortac |
| State Reference | TN |
| Altitude | msl bound lower : 24000 msl bound upper : 24300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise : level |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 174 flight time total : 3100 flight time type : 700 |
| ASRS Report | 498270 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : multi engine pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : published procedure non adherence : clearance |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : issued advisory flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew other |
| Factors | |
| Maintenance | performance deficiency : repair |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Aircraft |
Narrative:
Leveled off at FL240. ATC informed us that altitude was indicating FL243. Both pilot's and copilot's altimeters were 29.92 and showed a 300 ft difference. Copilot's altimeter used and continued flight to destination (evv) after contacting company flight control center. Aircraft maintenance ferried back to atlanta for repairs.
Original NASA ASRS Text
Title: ZTL ALERT E1120 FLC OF INCORRECT ALT. FLC DETERMINES PROB CAPT'S ALTIMETER, WHICH HAD RECENT MAINT.
Narrative: LEVELED OFF AT FL240. ATC INFORMED US THAT ALT WAS INDICATING FL243. BOTH PLT'S AND COPLT'S ALTIMETERS WERE 29.92 AND SHOWED A 300 FT DIFFERENCE. COPLT'S ALTIMETER USED AND CONTINUED FLT TO DEST (EVV) AFTER CONTACTING COMPANY FLT CTL CTR. ACFT MAINT FERRIED BACK TO ATLANTA FOR REPAIRS.
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.