Pilot of C402C lands at hya where reported WX minima is below minimums.

Attributes
ACN	426550
Time
Date	199901
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : hya
State Reference	MA
Altitude	msl bound lower : 1400 msl bound upper : 1400
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air taxi
Flight Phase	landing other
Route In Use	approach : straight in arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : cfi
Experience	flight time last 90 days : 120 flight time total : 8900 flight time type : 120
ASRS Report	426550
Person 2
Affiliation	government other
Function	controller : local
Events
Anomaly	non adherence : far non adherence other other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

I left nantucket for hyannis, ma, on a scheduled passenger flight, plting a C402C. The ATIS was calling hya as 200 ft overcast and 2 mi visibility. The ILS runway 24 hya was in use requiring an RVR of 5000 ft. As approach control turned me over to the tower just outside the OM, I checked in and tower informed me that the visibility was deteriorating rapidly and the RVR was 3000 ft. I acknowledged and continued the approach and landing without incident. I was wrong in continuing with the approach past the OM because the required visibility on the RVR was below minimums. It had been a day of several low approachs in ack requiring only 1800 ft RVR, so the 3000 ft RVR seemed like no problem. After landing, the tower asked for my flight conditions on approach, and I reported seeing the lights at 400 ft and about 1 mi visibility. The next pilot checked in. The tower gave him the same 3000 ft RVR report. He advised he was not able to accept the approach and requested the ILS runway 15 with only 1/2 mi visibility required. That is what I should have done as well. I have done this approach countless times before and knew that 5000 ft RVR was the minimum visibility required, however, at that particular moment it did not register in my mind that it was below minimums. I will definitely be more vigilant when getting reports from the tower.

Original NASA ASRS Text

Title: PLT OF C402C LANDS AT HYA WHERE RPTED WX MINIMA IS BELOW MINIMUMS.

Narrative: I LEFT NANTUCKET FOR HYANNIS, MA, ON A SCHEDULED PAX FLT, PLTING A C402C. THE ATIS WAS CALLING HYA AS 200 FT OVCST AND 2 MI VISIBILITY. THE ILS RWY 24 HYA WAS IN USE REQUIRING AN RVR OF 5000 FT. AS APCH CTL TURNED ME OVER TO THE TWR JUST OUTSIDE THE OM, I CHKED IN AND TWR INFORMED ME THAT THE VISIBILITY WAS DETERIORATING RAPIDLY AND THE RVR WAS 3000 FT. I ACKNOWLEDGED AND CONTINUED THE APCH AND LNDG WITHOUT INCIDENT. I WAS WRONG IN CONTINUING WITH THE APCH PAST THE OM BECAUSE THE REQUIRED VISIBILITY ON THE RVR WAS BELOW MINIMUMS. IT HAD BEEN A DAY OF SEVERAL LOW APCHS IN ACK REQUIRING ONLY 1800 FT RVR, SO THE 3000 FT RVR SEEMED LIKE NO PROB. AFTER LNDG, THE TWR ASKED FOR MY FLT CONDITIONS ON APCH, AND I RPTED SEEING THE LIGHTS AT 400 FT AND ABOUT 1 MI VISIBILITY. THE NEXT PLT CHKED IN. THE TWR GAVE HIM THE SAME 3000 FT RVR RPT. HE ADVISED HE WAS NOT ABLE TO ACCEPT THE APCH AND REQUESTED THE ILS RWY 15 WITH ONLY 1/2 MI VISIBILITY REQUIRED. THAT IS WHAT I SHOULD HAVE DONE AS WELL. I HAVE DONE THIS APCH COUNTLESS TIMES BEFORE AND KNEW THAT 5000 FT RVR WAS THE MINIMUM VISIBILITY REQUIRED, HOWEVER, AT THAT PARTICULAR MOMENT IT DID NOT REGISTER IN MY MIND THAT IT WAS BELOW MINIMUMS. I WILL DEFINITELY BE MORE VIGILANT WHEN GETTING RPTS FROM THE TWR.

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.