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A B737-ng captain's FMC malfunctioned during a dfw RNAV SID causing a track deviation.
| Attributes | |
| ACN | 842786 |
| Time | |
| Date | 200907 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | DFW.Airport |
| State Reference | TX |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | SID CLARE |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types |
Narrative:
Approaching trexx on the clare 2 departure; the captain's FMS blanked. Trexx turned white and the magenta line went away and jolen was no longer in the pfd map display. I attempted to re-enter jolen when the captain's FMS blanked again eliminating jolen again. I notified ATC we were unable RNAV and requested a vector. When on the vector we agreed to try FMS 'both on 2' and flight director 'B.' the blanking stopped and I was able to re-enter the RNAV waypoints (it wouldn't take the departure since we were already on it). While re-entering the remainder of the waypoints; a master caution came on with the 'aft door' light. I called the flight attendant and asked him to check the handle. He pushed down on the handle and the light extinguished. As I returned to my pilot not flying duties finishing the departure data input and checking the rest of the route; I overlooked tekbe. The oversight put us about 4 miles south of course when we were given direct swb. We notified ATC of the error; and continued the flight without any further events.
Original NASA ASRS Text
Title: A B737-NG Captain's FMC malfunctioned during a DFW RNAV SID causing a track deviation.
Narrative: Approaching TREXX on the CLARE 2 departure; the Captain's FMS blanked. TREXX turned white and the magenta line went away and JOLEN was no longer in the PFD map display. I attempted to re-enter JOLEN when the Captain's FMS blanked again eliminating JOLEN again. I notified ATC we were unable RNAV and requested a vector. When on the vector we agreed to try FMS 'both on 2' and flight director 'B.' The blanking stopped and I was able to re-enter the RNAV waypoints (it wouldn't take the departure since we were already on it). While re-entering the remainder of the waypoints; a Master Caution came on with the 'AFT DOOR' light. I called the Flight Attendant and asked him to check the handle. He pushed down on the handle and the light extinguished. As I returned to my pilot not flying duties finishing the departure data input and checking the rest of the route; I overlooked TEKBE. The oversight put us about 4 miles south of course when we were given direct SWB. We notified ATC of the error; and continued the flight without any further events.
Data retrieved from NASA's ASRS site as of April 2012 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.