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Air carrier medium large transport approach landing in WX reported below airport minimums for landing.
| Attributes | |
| ACN | 128760 |
| Time | |
| Date | 198911 |
| Day | Sat |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : smf airport : sma |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 2500 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : smf tower : smf |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach landing other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : flight engineer |
| Experience | flight time last 90 days : 210 flight time total : 14000 flight time type : 7500 |
| ASRS Report | 128760 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While on a right downwind to runway 16R at smf, I was advised the RVR was 800', prevailing visibility was 3/4 mi. I was in visibility conditions at the time and could see the airport. I informed approach control that if I couldn't do a visibility approach, I needed 1200' RVR to make an instrument approach. The copilot descended the aircraft to 2500' and we were given a hold at metropolitan as published, with an efc of XX30 Z. Approximately 1 mi from metropolitan I could see the approach lights and runway 16R. I advised approach that I had the runway. He said there was some question concerning the accuracy of the RVR and told me to contact tower. I contacted tower and said I had the runway in sight and was told 'cleared to land.' the approach was continued and the landing was uneventful. Flight visibility was at least 7 mi. In retrospect I'm not sure I made a legal approach. RVR is controling, and if it was malfunctioning,perhaps I should have waited for it to be shut down before making an approach. Also, I don't recall the approach controller's exact words concerning the type of approach I was cleared to make.
Original NASA ASRS Text
Title: ACR MLG APCH LNDG IN WX REPORTED BELOW ARPT MINIMUMS FOR LNDG.
Narrative: WHILE ON A RIGHT DOWNWIND TO RWY 16R AT SMF, I WAS ADVISED THE RVR WAS 800', PREVAILING VISIBILITY WAS 3/4 MI. I WAS IN VIS CONDITIONS AT THE TIME AND COULD SEE THE ARPT. I INFORMED APCH CTL THAT IF I COULDN'T DO A VIS APCH, I NEEDED 1200' RVR TO MAKE AN INSTRUMENT APCH. THE COPLT DSNDED THE ACFT TO 2500' AND WE WERE GIVEN A HOLD AT METRO AS PUBLISHED, WITH AN EFC OF XX30 Z. APPROX 1 MI FROM METRO I COULD SEE THE APCH LIGHTS AND RWY 16R. I ADVISED APCH THAT I HAD THE RWY. HE SAID THERE WAS SOME QUESTION CONCERNING THE ACCURACY OF THE RVR AND TOLD ME TO CONTACT TWR. I CONTACTED TWR AND SAID I HAD THE RWY IN SIGHT AND WAS TOLD 'CLRED TO LAND.' THE APCH WAS CONTINUED AND THE LNDG WAS UNEVENTFUL. FLT VISIBILITY WAS AT LEAST 7 MI. IN RETROSPECT I'M NOT SURE I MADE A LEGAL APCH. RVR IS CTLING, AND IF IT WAS MALFUNCTIONING,PERHAPS I SHOULD HAVE WAITED FOR IT TO BE SHUT DOWN BEFORE MAKING AN APCH. ALSO, I DON'T RECALL THE APCH CTLR'S EXACT WORDS CONCERNING THE TYPE OF APCH I WAS CLRED TO MAKE.
Data retrieved from NASA's ASRS site as of August 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.