Narrative:

I was the PNF on a flight from lax-san. A low patch of fog obscured the approach east of runway 27. The captain said he had the field in sight and asked for a visual approach. The captain said he would maintain VFR over the fog layer. On short final (within the airport boundary) lights could be seen through the fog. The captain then descended into the fog layer. The tower issued orders for a go around, which we adhered to. We were then vectored for the ILS 9 san. As we set up for the approach the fog became more pronounced. The approach was flown to the decision height of 350 ft. The field was not seen so we began the missed approach. As we began the climb the captain spotted the runway lights and committed us to a landing. The aircraft was landed on the last third of runway 9. Approach lights were not spotted at decision height (over the middle marker), landing was not assured within the touchdown zone, and it is my belief that the visibility was below 1 mi. In retrospect, I now believe I should have taken the aircraft away from my captain. I blame my inaction on not being prepared for his decision to land after the missed was called. I have doubts about my captain's ability to conduct safe operations in marginal conditions. I have alerted my chief pilot of the events, and I am waiting for their action.

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Original NASA ASRS Text

Title: COMMUTER VFR IN IMC DURING VISUAL APCH TO SAN.

Narrative: I WAS THE PNF ON A FLT FROM LAX-SAN. A LOW PATCH OF FOG OBSCURED THE APCH E OF RWY 27. THE CAPT SAID HE HAD THE FIELD IN SIGHT AND ASKED FOR A VISUAL APCH. THE CAPT SAID HE WOULD MAINTAIN VFR OVER THE FOG LAYER. ON SHORT FINAL (WITHIN THE ARPT BOUNDARY) LIGHTS COULD BE SEEN THROUGH THE FOG. THE CAPT THEN DSNDED INTO THE FOG LAYER. THE TWR ISSUED ORDERS FOR A GAR, WHICH WE ADHERED TO. WE WERE THEN VECTORED FOR THE ILS 9 SAN. AS WE SET UP FOR THE APCH THE FOG BECAME MORE PRONOUNCED. THE APCH WAS FLOWN TO THE DECISION HEIGHT OF 350 FT. THE FIELD WAS NOT SEEN SO WE BEGAN THE MISSED APCH. AS WE BEGAN THE CLB THE CAPT SPOTTED THE RWY LIGHTS AND COMMITTED US TO A LNDG. THE ACFT WAS LANDED ON THE LAST THIRD OF RWY 9. APCH LIGHTS WERE NOT SPOTTED AT DECISION HEIGHT (OVER THE MIDDLE MARKER), LNDG WAS NOT ASSURED WITHIN THE TOUCHDOWN ZONE, AND IT IS MY BELIEF THAT THE VISIBILITY WAS BELOW 1 MI. IN RETROSPECT, I NOW BELIEVE I SHOULD HAVE TAKEN THE ACFT AWAY FROM MY CAPT. I BLAME MY INACTION ON NOT BEING PREPARED FOR HIS DECISION TO LAND AFTER THE MISSED WAS CALLED. I HAVE DOUBTS ABOUT MY CAPT'S ABILITY TO CONDUCT SAFE OPS IN MARGINAL CONDITIONS. I HAVE ALERTED MY CHIEF PLT OF THE EVENTS, AND I AM WAITING FOR THEIR ACTION.

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.