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MD80 crew had both captain and first officer compass system indicate erroneous headings after takeoff at las.
| Attributes | |
| ACN | 586729 |
| Time | |
| Date | 200307 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : las.airport |
| State Reference | NV |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | tracon : l30.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 586729 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : compass systems other flight crewa other flight crewb |
| Resolutory Action | flight crew : landed as precaution flight crew : diverted to another airport other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
All system normal on takeoff. Shortly after takeoff, both captain's and first officer's heading information went approximately 120 degrees out of alignment. We informed las departure of the heading problems and requested headings via our wet compass in order to troubleshoot the problem. WX was very clear, no clouds. Despite our best efforts, we were unable to correct the problem. No warning flags or lights were illuminated. We returned to las for an uneventful landing.
Original NASA ASRS Text
Title: MD80 CREW HAD BOTH CAPT AND FO COMPASS SYS INDICATE ERRONEOUS HDGS AFTER TKOF AT LAS.
Narrative: ALL SYS NORMAL ON TKOF. SHORTLY AFTER TKOF, BOTH CAPT'S AND FO'S HDG INFO WENT APPROX 120 DEGS OUT OF ALIGNMENT. WE INFORMED LAS DEP OF THE HDG PROBS AND REQUESTED HDGS VIA OUR WET COMPASS IN ORDER TO TROUBLESHOOT THE PROB. WX WAS VERY CLR, NO CLOUDS. DESPITE OUR BEST EFFORTS, WE WERE UNABLE TO CORRECT THE PROB. NO WARNING FLAGS OR LIGHTS WERE ILLUMINATED. WE RETURNED TO LAS FOR AN UNEVENTFUL LNDG.
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.