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An MD80 on rotation to 1000 ft declared an emergency and diverted due to loss of environmental data on the captain's instruments.
| Attributes | |
| ACN | 496624 |
| Time | |
| Date | 200101 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : aus.airport |
| State Reference | TX |
| Altitude | msl bound lower : 0 msl bound upper : 1000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Ice |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : aus.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : takeoff |
| Route In Use | departure : other published ifr departure |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| ASRS Report | 496624 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : declared emergency flight crew : diverted to another airport |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Weather Environmental Factor Aircraft |
| Primary Problem | Company |
Narrative:
During rotation runway 25L aus, lost autothrottles, flight director, and captain airspeed began to decrease. Gpwas began alert 'terrain, terrain' and 'whoop, whoop, pull up.' attempted to stay VFR but unable. Flew vectored ILS to runway 35L. On landing, unable to start APU. During pattern, may have deviated from assigned headings or altitudes. Aus tower controller outstanding and very helpful. Captain made excellent use of all resources including first officer, ATC, flight attendants and company. Callback conversation with reporter revealed the following information: the reporter stated that at rotation the autothrottles disconnected, captain's flight director disconnected and captain's airspeed started to decrease. The reporter said he looked across at the captain's instruments and determined the failure was only on the captain's side. The reporter stated the airplane overnighted in aus during a severe ice storm and as a result was deiced prior to departure. The reporter stated maintenance replaced the #1 central air data computer and tested ok. The reporter and captain believe the problem was mainly caused by deicing fluid in the pitot and static tubes and plumbing of #1 system.
Original NASA ASRS Text
Title: AN MD80 ON ROTATION TO 1000 FT DECLARED AN EMER AND DIVERTED DUE TO LOSS OF ENVIRONMENTAL DATA ON THE CAPT'S INSTS.
Narrative: DURING ROTATION RWY 25L AUS, LOST AUTOTHROTTLES, FLT DIRECTOR, AND CAPT AIRSPD BEGAN TO DECREASE. GPWAS BEGAN ALERT 'TERRAIN, TERRAIN' AND 'WHOOP, WHOOP, PULL UP.' ATTEMPTED TO STAY VFR BUT UNABLE. FLEW VECTORED ILS TO RWY 35L. ON LNDG, UNABLE TO START APU. DURING PATTERN, MAY HAVE DEVIATED FROM ASSIGNED HDGS OR ALTS. AUS TWR CTLR OUTSTANDING AND VERY HELPFUL. CAPT MADE EXCELLENT USE OF ALL RESOURCES INCLUDING FO, ATC, FLT ATTENDANTS AND COMPANY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT AT ROTATION THE AUTOTHROTTLES DISCONNECTED, CAPT'S FLT DIRECTOR DISCONNECTED AND CAPT'S AIRSPD STARTED TO DECREASE. THE RPTR SAID HE LOOKED ACROSS AT THE CAPT'S INSTS AND DETERMINED THE FAILURE WAS ONLY ON THE CAPT'S SIDE. THE RPTR STATED THE AIRPLANE OVERNIGHTED IN AUS DURING A SEVERE ICE STORM AND AS A RESULT WAS DEICED PRIOR TO DEP. THE RPTR STATED MAINT REPLACED THE #1 CENTRAL AIR DATA COMPUTER AND TESTED OK. THE RPTR AND CAPT BELIEVE THE PROB WAS MAINLY CAUSED BY DEICING FLUID IN THE PITOT AND STATIC TUBES AND PLUMBING OF #1 SYS.
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.