Small transport pilot land below minimum WX conditions although properly advised of legal WX.

Attributes
ACN	160516
Time
Date	199010
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : gmu
State Reference	SC
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Small Transport
Flight Phase	descent : approach ground other : taxi landing other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 75 flight time total : 10000 flight time type : 1700
ASRS Report	160516
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	non adherence : published procedure non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

This was an INS flight from gso to gmu. Before arrival over spa VOR center informed me that gmu had gone below landing minimums and allowed me to hold at spa VOR at FL220. After holding for about 30-45 mins I saw that the fog was beginning to break up over the whole area, so I requested a descent and approach to gmu. Both were approved and issued, however gmu tower was still reporting 1/2 mi visibility. During the final segment of the approach I broke out into a large hole in the fog and could see about the first 2000' of the runway before reaching DH, so I decided to go ahead and land. The landing was normal, however during rollout further up the runway visibility then was reduced to less than 1 mi. The whole landing and rollout were uneventful, but if I had not landed within the first 1/3 of the runway, it could have developed into a hazardous execution of a missed approach.

Original NASA ASRS Text

Title: SMT PLT LAND BELOW MINIMUM WX CONDITIONS ALTHOUGH PROPERLY ADVISED OF LEGAL WX.

Narrative: THIS WAS AN INS FLT FROM GSO TO GMU. BEFORE ARR OVER SPA VOR CENTER INFORMED ME THAT GMU HAD GONE BELOW LNDG MINIMUMS AND ALLOWED ME TO HOLD AT SPA VOR AT FL220. AFTER HOLDING FOR ABOUT 30-45 MINS I SAW THAT THE FOG WAS BEGINNING TO BREAK UP OVER THE WHOLE AREA, SO I REQUESTED A DSNT AND APCH TO GMU. BOTH WERE APPROVED AND ISSUED, HOWEVER GMU TWR WAS STILL RPTING 1/2 MI VISIBILITY. DURING THE FINAL SEGMENT OF THE APCH I BROKE OUT INTO A LARGE HOLE IN THE FOG AND COULD SEE ABOUT THE FIRST 2000' OF THE RWY BEFORE REACHING DH, SO I DECIDED TO GO AHEAD AND LAND. THE LNDG WAS NORMAL, HOWEVER DURING ROLLOUT FURTHER UP THE RWY VISIBILITY THEN WAS REDUCED TO LESS THAN 1 MI. THE WHOLE LNDG AND ROLLOUT WERE UNEVENTFUL, BUT IF I HAD NOT LANDED WITHIN THE FIRST 1/3 OF THE RWY, IT COULD HAVE DEVELOPED INTO A HAZARDOUS EXECUTION OF A MISSED APCH.

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.