Page:CAB Accident Report, Slick Airways Flight 25C.pdf/4

-4- were issued by Approach Control for radar identification. The aircraft was declare in radar contact and subsequently vectored to the ILS final approach course. Slick 40Z was advised that it would be the third aircraft to land following a United Air Lines DC-8 (later identified as United 8009, a Convair 340), which was five miles ahead.

At approximately 1155, Approach Control advised that the San Francisco cloud cover had not changed (5,000 feet scaltered, 15,000 feet overcast), but that the visibility had now improved to 3/4 mile in ground fog and smoke, and runway 28R visual range was less than 2,000 feet. The crew then advised that they would "...like radar advisories on localiser approach."

Slick 40Z was then vectored in a wide circle during the period 1155 to 1201, and the crew was advised that they were nine miles from the outer marker and clear for an ILS approach. During this period, Approach Control informed the flight that the RVR had increased to 2,800 feet on runway 28R; and visibility remained at 3/4 mile.

At 1203, the flight was advised to continue inbound on the ILS, to contact San Francisco Tower on 120.5 mcs., and that radar advisories would be available on localizer voice.

At 1204, Slick 40Z contacted the tower and again stated "... we'd like radar advisories glide slope on the localizer frequency." The local controller cleared the flight to land and acknowledged the request with "...radar advisoried on localizer voice"

During the approach, the Precision Approach Radar (PAR) controller gave the flight its radar position relative to the glide slope and localizer course on localizer voice frequency of 109.5 mcs. These positions were acknowledged and, in one stance, requested by the crew on frequency 120.5 mcs.

The following are the final significant 109.5 and 120.5 mcs. transmissions

109.5 mcs. 1204:15 SLICK FOUR ZERO ZULU PASSING OUTER MARKER ALTITUDE OK AND ONE HUNDRED FEET RIGHT OF COURSE.

109.5 mcs. 1204:49 SLICK FOUR ZERO ZULU DO YOU HEAR PRECISION RADAR ON LOCALIZER VOICE.

120.5 mcs. 1204:50 (SAN FRANCISCO TOWER) SLICK FOUR ZERO ZULU, THERE APPEARS TO BE A FOG BANK ON THE APPROACH END OF RUNWAY TWO EIGHT OR TWO EIGHT LEFT EXTENDING UP TO ABOUT RUNWAY ONE RIGHT RUNWAYS VISIBILE WESTWARD FROM THAT POINT.

109.5 mcs. 1205:04 SLICK FOUR ZERO ZULU IS TWO HUNDRED FEET ABOVE GLIDE-PATH. FOUR MILES FROM TOUCHDOWN ONE HUNDRED FEET RIGHT OF COURSE.

109.5 mcs. 1205:37 SLICK FOUR ZERO ZULU RUNWAY TWO EIGHT VISUAL RANGE TWO EIGHT RIGHT VISUAL RANGE TWO THOUSAND FIVE HUNDRED.

109.5 mcs. 1205:57 AND FOUR ZERO ZULU IT'S NOW TWO THOUSAND SEVEN HUNDRED.