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B737 flight crew reported they overshot final approach course at lax when the autopilot failed to capture the localizer. Wake turbulence was also cited as contributing factor.
| Attributes | |
| ACN | 1491786 |
| Time | |
| Date | 201710 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | LAX.Airport |
| State Reference | CA |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | B737 Next Generation Undifferentiated |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 613 Flight Crew Type 7500 |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 456 |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
We were cleared on visual for 24L by socal approach to lax. On heading 230; altitude 2200; the first officer verified and armed the localizer for 24L. The aircraft captured the localizer and attempted to turn inbound; and at the same time [we] encountered wake turbulence. As we realized the aircraft was not making the corrections necessary to align with 24L localizer; the first officer disengaged the autopilot and manually turned the aircraft with hard 30 degree bank to avoid crossing into the 25R approach area. We [were] still above 1000 ft and aligned with 24L and proceeded to land. Taxiing on the ground; we were advised to call socal TRACON for possible pilot deviation. We did everything possible to quickly turn off the autopilot and bank as hard as possible to avoid the 25R approach area. We did not anticipate wake turbulence. We could have turned off the autopilot in advance of capturing to localizer once cleared on the visual.
Original NASA ASRS Text
Title: B737 flight crew reported they overshot final approach course at LAX when the autopilot failed to capture the localizer. Wake turbulence was also cited as contributing factor.
Narrative: We were cleared on visual for 24L by SoCal Approach to LAX. On heading 230; altitude 2200; the FO verified and armed the Localizer for 24L. The aircraft captured the LOC and attempted to turn inbound; and at the same time [we] encountered wake turbulence. As we realized the aircraft was not making the corrections necessary to align with 24L LOC; the FO disengaged the autopilot and manually turned the aircraft with hard 30 degree bank to avoid crossing into the 25R Approach area. We [were] still above 1000 ft and aligned with 24L and proceeded to land. Taxiing on the ground; we were advised to call SoCal TRACON for possible Pilot Deviation. We did everything possible to quickly turn off the autopilot and bank as hard as possible to avoid the 25R Approach area. We did not anticipate wake turbulence. We could have turned off the autopilot in advance of capturing to LOC once cleared on the visual.
Data retrieved from NASA's ASRS site 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.