B737 captain landing runway 28R reported encountering wake turbulence from preceding B747 landing ru...

Attributes
ACN	846919
Time
Date	200908
Local Time Of Day	0601-1200
Place
Locale Reference	SFO.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	B747 Undifferentiated or Other Model
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Wake Vortex Encounter

Narrative:

We were executing the lda prm 28R approach to sfo 2 miles behind a 747 on the ILS prm 28L. We broke out above MDA with the runway and preceding aircraft in sight and received clearance to land. We proceeded along the approach path to the runway and at 300 ft AGL; we encountered wake turbulence that suddenly and rapidly rolled the aircraft into 30 degrees left bank. We recovered the aircraft and executed a go-around. We returned for an uneventful ILS prm 28L approach and landing. This event occurred because the spacing between a heavy and large aircraft executing prm approaches to sfo may have been too close.

Original NASA ASRS Text

Title: B737 Captain landing Runway 28R reported encountering wake turbulence from preceding B747 landing Runway 28L at 300 FT AGL. After recovering from a sharp roll to the left the crew executed a go-around.

Narrative: We were executing the LDA PRM 28R approach to SFO 2 miles behind a 747 on the ILS PRM 28L. We broke out above MDA with the runway and preceding aircraft in sight and received clearance to land. We proceeded along the approach path to the runway and at 300 FT AGL; we encountered wake turbulence that suddenly and rapidly rolled the aircraft into 30 degrees left bank. We recovered the aircraft and executed a go-around. We returned for an uneventful ILS PRM 28L approach and landing. This event occurred because the spacing between a heavy and large aircraft executing PRM approaches to SFO may have been too close.

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.

B737 captain landing runway 28R reported encountering wake turbulence from preceding B747 landing runway 28L at 300 ft AGL. After recovering from a sharp roll to the left the crew executed a go-around.