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| Title: | Wake turbulence, Boeing 737-33A, G-OBMJ |
| Micro summary: | This Boeing 737-33A rolled sharply in the wake turbulence from a 747-400, injuring two flight attendants |
| Event Time: | 1997-06-04 at 1048 UTC |
| File Name: | 1997-06-04-UK.pdf |
| Publishing Agency: | Aircraft Accident Investigation Board (AAIB) |
| Publishing Country: | United Kingdom |
| Report number: | EW/C97/6/2 |
| Pages: | 3 |
| Site of event: | Approach London Heathrow |
| Departure: | Edinburgh Airport, Edinburgh, Scotland |
| Destination: | London Heathrow Airport, London, England |
| Airplane Type(s): | Boeing 737-33A |
| Flight Phase: | Approach |
| Registration(s): | G-OBMJ |
| Operator(s): | BMI British Midland Airways |
| Type of flight: | Revenue |
| Occupants: | 118 |
| Fatalities: | 0 |
| Serious Injuries: | 0 |
| Minor/Non-Injured: | 118 |
| Other Injuries: | 0 |
| Executive Summary: | The aircraft was on a scheduled flight from Edinburgh to London Heathrow Airport; the first officer was the handling pilot. The flight proceeded normally and, from Bovingdon, the aircraft was given radar vectors to the ILS for Runway 09L; the preceding aircraft was a Boeing 747-400. The first officer disconnected the autopilot and autothrottle and flew the approach manually. The aircraft established on the ILS, with 10° flap selected and the landing gear lowered; suddenly it rolled rapidly to the left to an estimated bank angle of 35°. The first officer immediately increased thrust on both engines, and aggressively applied opposite aileron to level the wings. Shortly afterwards the aircraft rolled rapidly to the right to a similar bank angle; again the first officer took recovery action. Flap 15° was selected and the speed was reduced to 150 kt; the remainder of the approach was uneventful and the aircraft landed at 1051 hrs. The catering equipment had been stowed when the event occurred and the cabin staff were about to respond to the chimes from the flight deck and take their seats for landing. Two cabin attendants in the rear galley were thrown to the floor by the initial roll to the left and were then thrown from side to side during the initial recovery and subsequent roll and recovery. One sustained severe bruising during this time, the other being protected to some extent by falling onto her colleague. |
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