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B737-700 first officer reported encountering wake turbulence on approach to den 4.5 miles in trail of an A320.
| Attributes | |
| ACN | 1232264 |
| Time | |
| Date | 201501 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | DEN.Airport |
| State Reference | CO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 181 |
| Events | |
| Anomaly | Conflict Airborne Conflict Deviation - Track / Heading All Types Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
On approximately a 10- to 15-mile final; we encountered moderate wake turbulence from an airbus 320 4.5 miles in front of us. The aircraft pitched down slightly; and rolled slightly to the right and back to the left for several seconds. While the aircraft was being held in a left bank; we went full scale deflection on the localizer and the autopilot downgraded to cws-right. After exiting the wake turbulence; we leveled off; and turned back to the localizer. Den final approach monitoring also mentioned we were left of course and to correct. As the pilot monitoring; I told them what happened. Once we coupled up with the localizer; we resumed our descent (we were slightly high on the glideslope). We continued the approach with no further problems. Preventative measures: not quite sure! We were on the glide slope with proper spacing behind a similar sized aircraft.
Original NASA ASRS Text
Title: B737-700 First Officer reported encountering wake turbulence on approach to DEN 4.5 miles in trail of an A320.
Narrative: On approximately a 10- to 15-mile final; we encountered moderate wake turbulence from an Airbus 320 4.5 miles in front of us. The aircraft pitched down slightly; and rolled slightly to the right and back to the left for several seconds. While the aircraft was being held in a left bank; we went full scale deflection on the localizer and the autopilot downgraded to CWS-R. After exiting the wake turbulence; we leveled off; and turned back to the localizer. DEN Final Approach monitoring also mentioned we were left of course and to correct. As the Pilot Monitoring; I told them what happened. Once we coupled up with the localizer; we resumed our descent (we were slightly high on the glideslope). We continued the approach with no further problems. Preventative Measures: Not quite sure! We were on the glide slope with proper spacing behind a similar sized aircraft.
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.