|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||atc facility : azo|
|Altitude||agl bound lower : 0|
agl bound upper : 0
|Operator||common carrier : air carrier|
|Make Model Name||Small Aircraft|
|Flight Phase||descent : approach|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 180|
flight time total : 3900
flight time type : 1400
|Affiliation||company : air carrier|
|Function||flight crew : first officer|
|Qualification||pilot : commercial|
|Anomaly||non adherence : far|
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : detected after the fact|
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||other|
We were on the ILS 35 at azo prior to reaching the OM. Tower gave us RVR of 1400, so we entered the hold at the OM while outbnd in the hold. RVR came back up to 2400. We turned back inbound and were about 9 mi from the OM. As we continued the RVR continued to increase to 5000'. Just prior to reaching the OM tower advised the RVR was now 4000'. We continued past the OM inbound and were given 2400' RVR with landing clearance to land. About halfway down the approach RVR was reported at 2200'. At 400' above DH I reported ground contact. At 300' above DH we had the approach lights. Just after calling 200' above DH we had the runway lights. We continued to a landing because we were outside the MM and had the runway so we had more than the 2400' RVR we thought we needed. After getting azo NOTAMS for the return trip I noticed I missed a NOTAM for the ILS 35 that raised the DH 50', and RVR to 4000'. I am sure we had 4000' as we crossed the marker, but I continued to a landing based on the idea that we needed 2400' for landing. I am not sure we had 4000' for the landing. I picked up the runway at 200' above DH but I am not sure if that is 4000' from the runway. The WX was worse at midfield. Snow showers were coming and going all day and had limited coverage. I missed the NOTAM because at about mid page it said ILS 35 but had no instructions. I thought it was normal. The changes were at the bottom of the page.
Original NASA ASRS Text
Title: NOTAM THAT THE PLT OBTAINED MY HAVE MADE HIM ILLEGAL IF IT STATED REIL OR ALS WAS INOPERATIVE.
Narrative: WE WERE ON THE ILS 35 AT AZO PRIOR TO REACHING THE OM. TWR GAVE US RVR OF 1400, SO WE ENTERED THE HOLD AT THE OM WHILE OUTBND IN THE HOLD. RVR CAME BACK UP TO 2400. WE TURNED BACK INBND AND WERE ABOUT 9 MI FROM THE OM. AS WE CONTINUED THE RVR CONTINUED TO INCREASE TO 5000'. JUST PRIOR TO REACHING THE OM TWR ADVISED THE RVR WAS NOW 4000'. WE CONTINUED PAST THE OM INBND AND WERE GIVEN 2400' RVR WITH LNDG CLRNC TO LAND. ABOUT HALFWAY DOWN THE APCH RVR WAS RPTED AT 2200'. AT 400' ABOVE DH I RPTED GND CONTACT. AT 300' ABOVE DH WE HAD THE APCH LIGHTS. JUST AFTER CALLING 200' ABOVE DH WE HAD THE RWY LIGHTS. WE CONTINUED TO A LNDG BECAUSE WE WERE OUTSIDE THE MM AND HAD THE RWY SO WE HAD MORE THAN THE 2400' RVR WE THOUGHT WE NEEDED. AFTER GETTING AZO NOTAMS FOR THE RETURN TRIP I NOTICED I MISSED A NOTAM FOR THE ILS 35 THAT RAISED THE DH 50', AND RVR TO 4000'. I AM SURE WE HAD 4000' AS WE CROSSED THE MARKER, BUT I CONTINUED TO A LNDG BASED ON THE IDEA THAT WE NEEDED 2400' FOR LNDG. I AM NOT SURE WE HAD 4000' FOR THE LNDG. I PICKED UP THE RWY AT 200' ABOVE DH BUT I AM NOT SURE IF THAT IS 4000' FROM THE RWY. THE WX WAS WORSE AT MIDFIELD. SNOW SHOWERS WERE COMING AND GOING ALL DAY AND HAD LIMITED COVERAGE. I MISSED THE NOTAM BECAUSE AT ABOUT MID PAGE IT SAID ILS 35 BUT HAD NO INSTRUCTIONS. I THOUGHT IT WAS NORMAL. THE CHANGES WERE AT THE BOTTOM OF THE PAGE.
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.