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Commuter light transport continued approach from inside the FAF after visibility was reported below airport minimums for landing.
| Attributes | |
| ACN | 155124 |
| Time | |
| Date | 199008 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : isp |
| State Reference | NY |
| Altitude | agl bound lower : 0 agl bound upper : 1900 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : isp |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | descent : approach landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 2900 |
| ASRS Report | 155124 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | inflight encounter : weather other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | other |
Narrative:
Destination airport WX was reported on ATIS as indefininte ceiling obscured 1/4 fog with a runway visibility value of 1/2 mi. The prescribed minimum to begin the ILS to runway 6 is 1/2 mi. I was the PF. Once established on the approach and inside the OM, the tower reported the runway visibility value as /38 of a mi. I, as was the captain, was under the impression that once you were inside the final approach fix and the WX went below minimums you could still continue the approach and land. We responded to the tower and continued and landed. I was so caught up on shooting the approach and transitioning to the landing phase that I did not have time to judge the visibility (in flight) I could see. I did have the runway environment in sight no lower than 100' above minimums. I am also still in question as to the authority of an RVV or RVR. Can you land with either below prescribed minimums? Does the RVR or RVV prevail when inside the FAF?
Original NASA ASRS Text
Title: COMMUTER LTT CONTINUED APCH FROM INSIDE THE FAF AFTER VISIBILITY WAS REPORTED BELOW ARPT MINIMUMS FOR LNDG.
Narrative: DEST ARPT WX WAS RPTED ON ATIS AS INDEFININTE CEILING OBSCURED 1/4 FOG WITH A RWY VIS VALUE OF 1/2 MI. THE PRESCRIBED MINIMUM TO BEGIN THE ILS TO RWY 6 IS 1/2 MI. I WAS THE PF. ONCE ESTABLISHED ON THE APCH AND INSIDE THE OM, THE TWR RPTED THE RWY VIS VALUE AS /38 OF A MI. I, AS WAS THE CAPT, WAS UNDER THE IMPRESSION THAT ONCE YOU WERE INSIDE THE FINAL APCH FIX AND THE WX WENT BELOW MINIMUMS YOU COULD STILL CONTINUE THE APCH AND LAND. WE RESPONDED TO THE TWR AND CONTINUED AND LANDED. I WAS SO CAUGHT UP ON SHOOTING THE APCH AND TRANSITIONING TO THE LNDG PHASE THAT I DID NOT HAVE TIME TO JUDGE THE VISIBILITY (IN FLT) I COULD SEE. I DID HAVE THE RWY ENVIRONMENT IN SIGHT NO LOWER THAN 100' ABOVE MINIMUMS. I AM ALSO STILL IN QUESTION AS TO THE AUTHORITY OF AN RVV OR RVR. CAN YOU LAND WITH EITHER BELOW PRESCRIBED MINIMUMS? DOES THE RVR OR RVV PREVAIL WHEN INSIDE THE FAF?
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.