Narrative:

While on final approach in visual conditions to runway 28L, at sfo, and landing clearance received, tower advised caution jet blast from aircraft crossing approach end of runway, (B747). B747 was cleared to cross runway 28L and hold short of runway 28R and did just that. However, seeing that his tail looked, and actually was too close for comfort to the approach end of my runway, 28L, I elected to fly high on glideslope (2-DOTS) over runway threshold to ensure not to collide if I inadvertently flew to the right of the runway centerline. I would have rejected the landing if not for visual conditions, dry surfaces, and the ease of touching down on runway 28L within the first 2000 ft of runway, and still making the first turn-off high-speed taxiway after the intersection of the runway 01L and right parallels, without excessive or harder braking than normal. Tower supervisor said that this is common practice at sfo. It doesn't seem to be safe operating procedure to me.

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Original NASA ASRS Text

Title: B757 HOLDS A HIGHER APCH ALTITUDE OVER SFO RWY 28L THRESHOLD DUE TO A B747 HOLDING BTWN THE 28 PARALLEL RWYS, IN ORDER TO AVOID POSSIBLE JET BLAST AND THE TAIL OF THE B747.

Narrative: WHILE ON FINAL APCH IN VISUAL CONDITIONS TO RWY 28L, AT SFO, AND LNDG CLRNC RECEIVED, TWR ADVISED CAUTION JET BLAST FROM ACFT XING APCH END OF RWY, (B747). B747 WAS CLRED TO CROSS RWY 28L AND HOLD SHORT OF RWY 28R AND DID JUST THAT. HOWEVER, SEEING THAT HIS TAIL LOOKED, AND ACTUALLY WAS TOO CLOSE FOR COMFORT TO THE APCH END OF MY RWY, 28L, I ELECTED TO FLY HIGH ON GLIDESLOPE (2-DOTS) OVER RWY THRESHOLD TO ENSURE NOT TO COLLIDE IF I INADVERTENTLY FLEW TO THE RIGHT OF THE RWY CENTERLINE. I WOULD HAVE REJECTED THE LNDG IF NOT FOR VISUAL CONDITIONS, DRY SURFACES, AND THE EASE OF TOUCHING DOWN ON RWY 28L WITHIN THE FIRST 2000 FT OF RWY, AND STILL MAKING THE FIRST TURN-OFF HIGH-SPEED TXWY AFTER THE INTXN OF THE RWY 01L AND R PARALLELS, WITHOUT EXCESSIVE OR HARDER BRAKING THAN NORMAL. TWR SUPVR SAID THAT THIS IS COMMON PRACTICE AT SFO. IT DOESN'T SEEM TO BE SAFE OPERATING PROCEDURE TO ME.

Data retrieved from NASA's ASRS site as of July 2007 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.