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Flight crew of B757-200 encounter failed air data instrumentation including both airspeed indicators and engine instrumentation.
| Attributes | |
| ACN | 649306 |
| Time | |
| Date | 200502 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 7500 flight time type : 4000 |
| ASRS Report | 649306 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical inflight encounter : turbulence inflight encounter : weather inflight encounter other other anomaly other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : provided flight assist flight crew : diverted to another airport flight crew : declared emergency flight crew : landed as precaution |
| Consequence | other |
| Supplementary | |
| Problem Areas | Weather Maintenance Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
WX conditions were IFR with light to moderate snow. Deiced aircraft with 100% type iv fluid. Holdover time began at XA07Z. Departed ZZZ1 within holdover time at XA27Z. Uneventful climb out. At approximately FL300; captain lost his airspeed indicator (fluctuating wildly) and asked me to take control of the aircraft. Shortly thereafter; I lost my airspeed indicator as well. In addition; EPR; N1; and N2 indicators went blank. WX was IFR with moderate turbulence. Emergency was declared. Elected to land at nearest suitable VFR airport that did not require us to re-enter icing conditions. Consulted with dispatcher and with ATC. We all agreed ZZZ2 was the closest suitable VFR airport. Landing was uneventful. Aircraft was in complete control at all times.
Original NASA ASRS Text
Title: FLT CREW OF B757-200 ENCOUNTER FAILED AIR DATA INSTRUMENTATION INCLUDING BOTH AIRSPD INDICATORS AND ENG INSTRUMENTATION.
Narrative: WX CONDITIONS WERE IFR WITH LIGHT TO MODERATE SNOW. DEICED ACFT WITH 100% TYPE IV FLUID. HOLDOVER TIME BEGAN AT XA07Z. DEPARTED ZZZ1 WITHIN HOLDOVER TIME AT XA27Z. UNEVENTFUL CLBOUT. AT APPROX FL300; CAPT LOST HIS AIRSPD INDICATOR (FLUCTUATING WILDLY) AND ASKED ME TO TAKE CTL OF THE ACFT. SHORTLY THEREAFTER; I LOST MY AIRSPD INDICATOR AS WELL. IN ADDITION; EPR; N1; AND N2 INDICATORS WENT BLANK. WX WAS IFR WITH MODERATE TURB. EMER WAS DECLARED. ELECTED TO LAND AT NEAREST SUITABLE VFR ARPT THAT DID NOT REQUIRE US TO RE-ENTER ICING CONDITIONS. CONSULTED WITH DISPATCHER AND WITH ATC. WE ALL AGREED ZZZ2 WAS THE CLOSEST SUITABLE VFR ARPT. LNDG WAS UNEVENTFUL. ACFT WAS IN COMPLETE CTL AT ALL TIMES.
Data retrieved from NASA's ASRS site as of January 2009 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.