B747-400 FLT CREW WAS INITIALLY DENIED LNDG ON RWY 22L AT ORD FOR OPERATIONAL PURPOSES AND ATTEMPTED APPROACH TO 14R BUT EXCEEDED STABILIZED SPEED CRITERIA ON APCH AFTER WIND SHIFT. MISSED APCH WAS ACCOMPLISHED FOLLOWED BY AN UNEVENTFUL LNDG ON 22L.

2008-02 · NASA ASRS report 786391

Date: 2008-02 · Aircraft: B747-400

Anomalies: inflight-event-encounter-unstabilized-approach

Synopsis

B747-400 FLT CREW WAS INITIALLY DENIED LNDG ON RWY 22L AT ORD FOR OPERATIONAL PURPOSES AND ATTEMPTED APPROACH TO 14R BUT EXCEEDED STABILIZED SPEED CRITERIA ON APCH AFTER WIND SHIFT. MISSED APCH WAS ACCOMPLISHED FOLLOWED BY AN UNEVENTFUL LNDG ON 22L.

Narrative

THE ACFT WAS ENRTE TO ORD. WX FORECAST WAS FOR LOW IFR CEILINGS AND FOG IMPROVING TO MVFR WITH PASSING TSTMS AND HIGH WINDS. ABOUT 40 MI BEFORE LNDG; ARPT WAS IFR WITH HIGH WINDS: 280 DEGS AT 22 KTS GUSTING TO 28 KTS; MAX WIND 32. ARRS WERE USING RWY 14R AND RWY 22R. CONDITIONS WERE MAX X-WIND FOR THE B747-400 ACFT AND RWY 14R WAS WET. THE CAPT NOTIFIED ZAU AND LATER; CLOSER IN; THAT RWY 22L WAS REQUESTED. SEVERAL REQUESTS WERE DENIED BECAUSE THAT RWY WAS A DEP RWY. WITH TSTMS JUST E OF THE ARPT; ACFT MADE AN ILS RWY 14R APCH WITH MAX XING COMPONENT AND MADE A GAR AT ABOUT 400 FT AGL WHEN WIND COMPONENT SHIFTED SLIGHTLY TO TAILWIND ON APCH AND EXPERIENCED 20 KT INCREASE IN APCH SPD EXCEEDING STABILIZED SPD CRITERIA. DURING THE MISSED APCH WE AGAIN REQUESTED RWY 22L FOR LNDG WHICH WAS THE ONLY OPERATIONAL RWY AVAILABLE FOR LNDG DISTANCES. WE ALSO DECLARED A FUEL ADVISORY BEING 10 MINS BEFORE HAVING TO DIVERT TO ALTERNATE. AFTER SEVERAL VECTORS; WE MADE A NORMAL LNDG ON RWY 22L. THE CAPT WAS NOTIFIED TO CALL ARTCC ON THE TELEPHONE. AFTER CALLING ATC; WERE QUESTIONED WHY WE MADE A GAR ON RWY 14R AND THEN LANDED ON RWY 22L CAUSING 2 OR 3 ACFT TO HOLD. IT IS RIDICULOUS TO REQUEST THE REQUIRED RWY SEVERAL TIMES WITH CTR AND APCH CTL FOR OPERATIONAL PURPOSES AND THEN BE PUT THROUGH THE WRINGER TO BE ABLE TO LAND WHEN LIMITATIONS REQUIRE THAT COURSE OF ACTION. WE ARE FLYING THE LARGEST ACFT THAT LANDS AT ORD AND IT IS OPERATIONALLY NOT THE SAME AS AN RJ OR MD80 WHICH ARE MOST PREVALENTLY AT ORD. NOT ALONE THAT THIS CREATED A POTENTIAL FLT PROB BUT WASTED OVER 1500 GALLONS OF FUEL AND PUT THE PAX THROUGH A STRESSFUL CONDITION. THERE IS A CHRONIC PROB AT ORD WITH LARGE ACFT -- ESPECIALLY THE B747-400 THAT ARRIVE FROM LONG DISTANCE FOREIGN DEP POINTS WITH TIRED AND FATIGUED CREWS; AND MARGINAL FUEL RESERVES THAT CAN'T TAKE UNDUE HOLDING OR MISSED APCHS. THE OPERATIONAL REQUIREMENTS OF THE B747-400 NEEDING LONGER RWYS AND OTHER OPERATIONAL CRITERIA NEED TO BE UNDERSTOOD BY ATC -- ESPECIALLY RWY CONDITION; LARGER TFC SEPARATION; AND XWIND CONSIDERATIONS; SPD RESTRS; AND FUEL RESERVES. WX AT THE TIME OF ARR WAS 26 BROKEN 5 MI RW/-TRW. TSE25 OCCASIONAL LIGHT ICING NE/S CD DIST NE/S MOVING NE WIND 280 DEGS 22 KTS GUSTING 28 KTS MAX 32 KTS.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.

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