Narrative:

Inside the FAF to runway 16L at denver, the GPWS sounded, because of late extension of the landing gear. Actually, the crew had caught their mistake and lowered the gear prior to GPWS, but the gear was still in the final process of extension. The red warning and alarm did go off in the process. Extenuating circumstances were 3 runway changes from den approach and of most significance, an ACARS alert of 30 KTS loss of airspeed from a microburst alert from dispatch. The crew was asking tower about windshear for runway 16L, when they caught the lack of a landing checklist in the ECAM, the call was made for gear extension. The GPWS worked as advertised. The gear was being extended during the alert. A normal landing followed.

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Original NASA ASRS Text

Title: A320 CREW HAD A GPWS WARNING 'LNDG GEAR' ON APCH TO DEN.

Narrative: INSIDE THE FAF TO RWY 16L AT DENVER, THE GPWS SOUNDED, BECAUSE OF LATE EXTENSION OF THE LNDG GEAR. ACTUALLY, THE CREW HAD CAUGHT THEIR MISTAKE AND LOWERED THE GEAR PRIOR TO GPWS, BUT THE GEAR WAS STILL IN THE FINAL PROCESS OF EXTENSION. THE RED WARNING AND ALARM DID GO OFF IN THE PROCESS. EXTENUATING CIRCUMSTANCES WERE 3 RWY CHANGES FROM DEN APCH AND OF MOST SIGNIFICANCE, AN ACARS ALERT OF 30 KTS LOSS OF AIRSPD FROM A MICROBURST ALERT FROM DISPATCH. THE CREW WAS ASKING TWR ABOUT WINDSHEAR FOR RWY 16L, WHEN THEY CAUGHT THE LACK OF A LNDG CHKLIST IN THE ECAM, THE CALL WAS MADE FOR GEAR EXTENSION. THE GPWS WORKED AS ADVERTISED. THE GEAR WAS BEING EXTENDED DURING THE ALERT. A NORMAL LNDG FOLLOWED.

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.