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|
Attributes | |
ACN | 455228 |
Time | |
Date | 199911 |
Day | Sun |
Local Time Of Day | 0001 To 0600 |
Place | |
Locale Reference | airport : ewr.airport |
State Reference | NJ |
Altitude | agl bound lower : 0 agl bound upper : 6982 |
Environment | |
Flight Conditions | VMC |
Light | Night |
Aircraft 1 | |
Operator | common carrier : air carrier |
Make Model Name | DC-10 30F |
Operating Under FAR Part | Part 121 |
Navigation In Use | other |
Flight Phase | ground : parked |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : instrument pilot : multi engine pilot : atp pilot : commercial pilot : flight engineer technician : powerplant technician : airframe |
Experience | flight time last 90 days : 83 flight time total : 18000 flight time type : 310 |
ASRS Report | 455228 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
Experience | flight time last 90 days : 20 flight time total : 13000 flight time type : 250 |
ASRS Report | 455389 |
Events | |
Anomaly | aircraft equipment problem : critical non adherence : published procedure other spatial deviation |
Independent Detector | other controllera |
Resolutory Action | controller : issued advisory flight crew : returned to intended or assigned course |
Supplementary | |
Problem Areas | Aircraft Environmental Factor Flight Crew Human Performance |
Primary Problem | Flight Crew Human Performance |
Air Traffic Incident | Pilot Deviation |
Narrative:
After initial alignment, compass system slewed 40 degrees left because of strong magnetic field at our gate. During multi turn short taxi, crew didn't notice discrepancy. Shortly after takeoff clearance, INS use and masked magnetic compass problem. Later assigned heading the switch back to magnetic resulted in large heading error. Center pointed out our error and we realigned compass system, corrected our heading and relieved the problem.
Original NASA ASRS Text
Title: A DC10-30 DEPARTED A GATE WITH A 40 DEG MAGNETIC ERROR RESULTING IN A HEADING DEV CORRECTED BY ATC.
Narrative: AFTER INITIAL ALIGNMENT, COMPASS SYS SLEWED 40 DEGS L BECAUSE OF STRONG MAGNETIC FIELD AT OUR GATE. DURING MULTI TURN SHORT TAXI, CREW DIDN'T NOTICE DISCREPANCY. SHORTLY AFTER TKOF CLRNC, INS USE AND MASKED MAGNETIC COMPASS PROB. LATER ASSIGNED HEADING THE SWITCH BACK TO MAGNETIC RESULTED IN LARGE HEADING ERROR. CTR POINTED OUT OUR ERROR AND WE REALIGNED COMPASS SYS, CORRECTED OUR HEADING AND RELIEVED THE PROB.
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.