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A B737-400 flight crew discovered the aircraft had been removed from CAT III after completing a CAT III approach and autoland.
| Attributes | |
| ACN | 450430 |
| Time | |
| Date | 199909 |
| Day | Thu |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : anc.airport |
| State Reference | AK |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Rain Turbulence |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : a11.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi pilot : commercial pilot : instrument pilot : multi engine pilot : flight engineer |
| Experience | flight time last 90 days : 240 flight time total : 8700 flight time type : 4300 |
| ASRS Report | 450430 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : non compliance with mel non adherence : company policies non adherence : far |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
WX had deteriorated at anc. Although it appeared we could land with no problem using CAT I ILS procedures, captain decided while we were being vectored for approach to couple other autoplt and use CAT III procedures/autoland to make sure we made it in. I agreed and the captain gave me aircraft via the autoplt and we rebugged for a flaps 40 degree landing and flew an uneventful CAT III automatic landing. After reaching the gate and preparing for the return flight to sea, I suddenly noticed the aircraft status as 'CAT I' while I was looking over the new release and flight plan. Because of this, we technically should not have flown the approach using CAT III autoland procedures. Had we taken the time to properly brief with the briefing card for a CAT III autoland as we usually do, we both would have probably noticed the aircraft status and not flown a CAT III autoland as we did.
Original NASA ASRS Text
Title: A B737-400 FLC DISCOVERED THE ACFT HAD BEEN REMOVED FROM CAT III AFTER COMPLETING A CAT III APCH AND AUTOLAND.
Narrative: WX HAD DETERIORATED AT ANC. ALTHOUGH IT APPEARED WE COULD LAND WITH NO PROB USING CAT I ILS PROCS, CAPT DECIDED WHILE WE WERE BEING VECTORED FOR APCH TO COUPLE OTHER AUTOPLT AND USE CAT III PROCS/AUTOLAND TO MAKE SURE WE MADE IT IN. I AGREED AND THE CAPT GAVE ME ACFT VIA THE AUTOPLT AND WE REBUGGED FOR A FLAPS 40 DEG LNDG AND FLEW AN UNEVENTFUL CAT III AUTO LNDG. AFTER REACHING THE GATE AND PREPARING FOR THE RETURN FLT TO SEA, I SUDDENLY NOTICED THE ACFT STATUS AS 'CAT I' WHILE I WAS LOOKING OVER THE NEW RELEASE AND FLT PLAN. BECAUSE OF THIS, WE TECHNICALLY SHOULD NOT HAVE FLOWN THE APCH USING CAT III AUTOLAND PROCS. HAD WE TAKEN THE TIME TO PROPERLY BRIEF WITH THE BRIEFING CARD FOR A CAT III AUTOLAND AS WE USUALLY DO, WE BOTH WOULD HAVE PROBABLY NOTICED THE ACFT STATUS AND NOT FLOWN A CAT III AUTOLAND AS WE DID.
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.