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A B767-200 cockpit jumpseat rider reported anomalous initial flight guidance indications during a holtz RNAV SID departure from lax.
| Attributes | |
| ACN | 945352 |
| Time | |
| Date | 201104 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LAX.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B767-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Route In Use | SID HOLTZ 9 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Other / Unknown |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
While in position for take off on runway 25L the crew checked runway alignment and found it to be correct. The flight was cleared for take off and the holtz 9 departure. After rotation I noted the runway symbol trend right (south) of the aircraft. The crew continued tracking outbound on runway heading and apparent centerline. At approximately 400 ft AGL the LNAV system was engaged. By about 800 ft AGL the flight director was indicating a one half scale deflection to the right. The crew elected to continue on runway heading as opposed to following the flight director. At about 1;500 ft the course line began to trend back to the left and centered up on the aircraft symbol. The flight director slowly centered up also. The rest of the departure proceeded normally. No notams indicated any failure of vors in the area. They should either end all RNAV departures out of lax or fix the anomaly that is causing our system to turn the aircraft into oncoming traffic.
Original NASA ASRS Text
Title: A B767-200 cockpit jumpseat rider reported anomalous initial flight guidance indications during a HOLTZ RNAV SID departure from LAX.
Narrative: While in position for take off on Runway 25L the crew checked runway alignment and found it to be correct. The flight was cleared for take off and the Holtz 9 departure. After rotation I noted the runway symbol trend right (south) of the aircraft. The crew continued tracking outbound on runway heading and apparent centerline. At approximately 400 FT AGL the LNAV system was engaged. By about 800 FT AGL the flight director was indicating a one half scale deflection to the right. The crew elected to continue on runway heading as opposed to following the flight director. At about 1;500 FT the course line began to trend back to the left and centered up on the aircraft symbol. The flight director slowly centered up also. The rest of the departure proceeded normally. No NOTAMs indicated any failure of VORs in the area. They should either end all RNAV departures out of LAX or fix the anomaly that is causing our system to turn the aircraft into oncoming traffic.
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.