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Widebody transport on departure SID has TCASII RA to level. VOR then fails on captain side and miss intercept. Vectored back on course.
| Attributes | |
| ACN | 239740 |
| Time | |
| Date | 199304 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : fra |
| State Reference | FO |
| Altitude | msl bound lower : 1500 msl bound upper : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Flight Phase | climbout : initial |
| Route In Use | departure sid : sid enroute : on vectors enroute airway : fra |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time total : 13200 flight time type : 2300 |
| ASRS Report | 239740 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | vertical : 600 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On departure from frankfurt airport a TA was given by our TCASII to limit climb due to an aircraft conflict. About the same time on the departure SID at 5 DME a right turn is to be commenced to a 275 degree heading to intercept a 261 degree radial off ffm VOR. The turn was made to 275 degrees at the 5 DME as prescribed but the captain's VOR went inoperative and the first officer course deviation bar showed we were through, i.e., right of the radial already. We turned back left to intercept the first officer course bar and called departure control to report the problem. The controller advised that we were left of course and gave radar vectors. Without the traffic avoidance we might have been higher for navigation purposes but we feel either both aircraft vors were at fault or the frankfurt VOR was faulty. Nothing unfavorable was said by departure control. We feel the situation of the navigation error was unusual and advised our company of the problem.
Original NASA ASRS Text
Title: WDB ON DEP SID HAS TCASII RA TO LEVEL. VOR THEN FAILS ON CAPT SIDE AND MISS INTERCEPT. VECTORED BACK ON COURSE.
Narrative: ON DEP FROM FRANKFURT ARPT A TA WAS GIVEN BY OUR TCASII TO LIMIT CLB DUE TO AN ACFT CONFLICT. ABOUT THE SAME TIME ON THE DEP SID AT 5 DME A R TURN IS TO BE COMMENCED TO A 275 DEG HDG TO INTERCEPT A 261 DEG RADIAL OFF FFM VOR. THE TURN WAS MADE TO 275 DEGS AT THE 5 DME AS PRESCRIBED BUT THE CAPT'S VOR WENT INOP AND THE FO COURSE DEV BAR SHOWED WE WERE THROUGH, I.E., R OF THE RADIAL ALREADY. WE TURNED BACK L TO INTERCEPT THE FO COURSE BAR AND CALLED DEP CTL TO RPT THE PROB. THE CTLR ADVISED THAT WE WERE L OF COURSE AND GAVE RADAR VECTORS. WITHOUT THE TFC AVOIDANCE WE MIGHT HAVE BEEN HIGHER FOR NAV PURPOSES BUT WE FEEL EITHER BOTH ACFT VORS WERE AT FAULT OR THE FRANKFURT VOR WAS FAULTY. NOTHING UNFAVORABLE WAS SAID BY DEP CTL. WE FEEL THE SIT OF THE NAV ERROR WAS UNUSUAL AND ADVISED OUR COMPANY OF 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.