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A300 captain experienced airspeed indicator failure at FL280. Switching to air data computer #2 cures the problem; but decision was made to divert for an equipment change.
| Attributes | |
| ACN | 843086 |
| Time | |
| Date | 200907 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Route In Use | Oceanic |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Airspeed Indicator |
| Person 1 | |
| Function | Captain Pilot Flying |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
At FL280; tat -1C; sat -27C and light precipitation. Captain's pfd airspeed indication became unreliable and fluctuated between zero and mach .76 a couple of times; mostly towards zero. Standby and first officer's indications appeared normal. Followed unreliable airspeed checklist and after selecting captain's side to air data computer #2; captain's airspeed back to normal. Contacted dispatch and diverted for equipment change. Declared emergency for overweight landing.
Original NASA ASRS Text
Title: A300 Captain experienced airspeed indicator failure at FL280. Switching to ADC #2 cures the problem; but decision was made to divert for an equipment change.
Narrative: At FL280; TAT -1C; SAT -27C and light precipitation. Captain's PFD airspeed indication became unreliable and fluctuated between zero and Mach .76 a couple of times; mostly towards zero. Standby and First Officer's indications appeared normal. Followed unreliable airspeed checklist and after selecting Captain's side to ADC #2; Captain's airspeed back to normal. Contacted Dispatch and diverted for equipment change. Declared emergency for overweight landing.
Data retrieved from NASA's ASRS site as of April 2012 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.