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B737-900 captain reported wake turbulence from a B747 on approach to sea on a parallel runway that resulted in a 45 degree bank.
| Attributes | |
| ACN | 1169550 |
| Time | |
| Date | 201405 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | SEA.Airport |
| State Reference | WA |
| Aircraft 1 | |
| Make Model Name | B737-900 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | Visual Approach |
| Aircraft 2 | |
| Make Model Name | B747 Undifferentiated or Other Model |
| Flight Phase | Initial Approach |
| Person 1 | |
| Function | Pilot Flying Captain |
| Events | |
| Anomaly | Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
On left base to final on visual approach for [runway] 16R; at 4;200 ft; clean configuration; approaching min maneuver speed; hand flying. Encountered wake turbulence from preceding B747 who was on approach to [runway] 16L. We had this aircraft in sight. Bank angle went abruptly to approximately 45 degrees before I recovered by adding power; unloading and rolling wings level. Subsequently intercepted final and got on glideslope for a stable approach by 1;000 ft and made an uneventful landing. Made PA after landing to inform passengers and flight attendants what we had encountered. Stood at doorway for all deplaning passengers and answered any questions they had about this event.
Original NASA ASRS Text
Title: B737-900 Captain reported wake turbulence from a B747 on approach to SEA on a parallel runway that resulted in a 45 degree bank.
Narrative: On left base to final on visual approach for [Runway] 16R; at 4;200 FT; clean configuration; approaching min maneuver speed; hand flying. Encountered wake turbulence from preceding B747 who was on approach to [Runway] 16L. We had this aircraft in sight. Bank angle went abruptly to approximately 45 degrees before I recovered by adding power; unloading and rolling wings level. Subsequently intercepted final and got on glideslope for a stable approach by 1;000 FT and made an uneventful landing. Made PA after landing to inform passengers and flight attendants what we had encountered. Stood at doorway for all deplaning passengers and answered any questions they had about this event.
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.