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Flight crew of medium large transport air carrier aircraft were concerned that they were not legal to continue an ILS approach after latest WX indicated below approach mins for their type of operations. Upon reaching the final approach fix, the WX was reported above mins.
| Attributes | |
| ACN | 209205 |
| Time | |
| Date | 199204 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord tower : ord tower : yow |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 150 flight time total : 9500 |
| ASRS Report | 209205 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 3000 flight time type : 150 |
| ASRS Report | 209207 |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
On vectors ILS 14L ord ATIS WX w0x1/2F. Approach reported RVR 3000 or better. We required RVR of 2400 for approach due to inoperative runway lights. Cleared to 4000 ft to join localizer and cleared approach. Prior to intercepting GS, heard approach control call RVR 2200. 2 aircraft advised approach control they could not accept approach clearance. Twice controller instructed all aircraft on localizer to continue approach to OM for instructions from tower. At marker RVR 3000 ft landed uneventfully approach control did not seem to understand we were not legal to begin approach or descent below 4000 ft. Complied with his instructions in interest of safety.
Original NASA ASRS Text
Title: FLC OF MLG ACR ACFT WERE CONCERNED THAT THEY WERE NOT LEGAL TO CONTINUE AN ILS APCH AFTER LATEST WX INDICATED BELOW APCH MINS FOR THEIR TYPE OF OPS. UPON REACHING THE FINAL APCH FIX, THE WX WAS RPTED ABOVE MINS.
Narrative: ON VECTORS ILS 14L ORD ATIS WX W0X1/2F. APCH RPTED RVR 3000 OR BETTER. WE REQUIRED RVR OF 2400 FOR APCH DUE TO INOP RWY LIGHTS. CLRED TO 4000 FT TO JOIN LOC AND CLRED APCH. PRIOR TO INTERCEPTING GS, HEARD APCH CTL CALL RVR 2200. 2 ACFT ADVISED APCH CTL THEY COULD NOT ACCEPT APCH CLRNC. TWICE CTLR INSTRUCTED ALL ACFT ON LOC TO CONTINUE APCH TO OM FOR INSTRUCTIONS FROM TWR. AT MARKER RVR 3000 FT LANDED UNEVENTFULLY APCH CTL DID NOT SEEM TO UNDERSTAND WE WERE NOT LEGAL TO BEGIN APCH OR DSCNT BELOW 4000 FT. COMPLIED WITH HIS INSTRUCTIONS IN INTEREST OF SAFETY.
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.