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A B737-700 flight crew landed without clearance after being distracted by a wake encounter.
| Attributes | |
| ACN | 918354 |
| Time | |
| Date | 201011 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Landing Without Clearance Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
About 2 miles from glide slope intercept and on the localizer; we encountered wake turbulence from the preceding aircraft. I disconnected the autopilot and flew slightly above [the glide slope] to escape the wake; then re-established glide path. I then called for the remainder of the flaps and the before landing check was completed. Approach control had told us to contact tower at the FAF. Upon completion of checklist; pilot monitoring called 'clear to land'. After turning off the runway; I looked at the VHF 1 frequency and didn't recognize the frequency. I asked the captain and he said it was tower. It was then I figured out we were still on approach frequency. The captain called the tower and the controller said everything was fine. The threat was a slight distraction which resulted in a failure to communicate. A positive hand-off from approach control to tower would likely prevent this sort of thing from occurring.
Original NASA ASRS Text
Title: A B737-700 flight crew landed without clearance after being distracted by a wake encounter.
Narrative: About 2 miles from glide slope intercept and on the localizer; we encountered wake turbulence from the preceding aircraft. I disconnected the autopilot and flew slightly above [the glide slope] to escape the wake; then re-established glide path. I then called for the remainder of the flaps and the before landing check was completed. Approach control had told us to contact tower at the FAF. Upon completion of checklist; Pilot Monitoring called 'clear to land'. After turning off the runway; I looked at the VHF 1 frequency and didn't recognize the frequency. I asked the Captain and he said it was Tower. It was then I figured out we were still on Approach frequency. The Captain called the Tower and the Controller said everything was fine. The threat was a slight distraction which resulted in a failure to communicate. A positive hand-off from Approach Control to Tower would likely prevent this sort of thing from occurring.
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.