Narrative:

Flying medium large transport. First officer's leg. New first officer on airplane (approximately 1 month). We had previously discussed the need for keeping more airspeed on short final as an medium large transport will tend to fall out from under you if you are close to bug speed. At approximately 600' AGL the airspeed increased somewhat (smoothly to bug + 25) and then decreased back to bug + 10. There was no wind shear warning from the tower. At approximately 100' AGL bug + 10, as we descended, airspeed went to bug at approximately 50' AGL and I grabbed throttles and added maximum power as the airplane had started to settle. We contacted the runway firmly and bounced (tower later estimated 15-20' in air). Rather than attempt to put plane back on runway, we elected to go around. While in climb out tower reported wind shear alert. Landing was made by me on second approach. Ramp svcman later told me, just before our first attempt, the flags on terminal bldg switched position indicating a change in direction of wind. Reported bounce to chief pilot, dispatch, chief dispatcher and technical services. Maintenance did a hard landing inspection and no damage was found. ATIS E60 broken 25 broken 15, 60 degrees 34 degrees 290 degrees 17 29.53, visual to 29.

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Original NASA ASRS Text

Title: ACR MLG HARD LNDG BY NEW FO.

Narrative: FLYING MLG. F/O'S LEG. NEW F/O ON AIRPLANE (APPROX 1 MONTH). WE HAD PREVIOUSLY DISCUSSED THE NEED FOR KEEPING MORE AIRSPD ON SHORT FINAL AS AN MLG WILL TEND TO FALL OUT FROM UNDER YOU IF YOU ARE CLOSE TO BUG SPD. AT APPROX 600' AGL THE AIRSPD INCREASED SOMEWHAT (SMOOTHLY TO BUG + 25) AND THEN DECREASED BACK TO BUG + 10. THERE WAS NO WIND SHEAR WARNING FROM THE TWR. AT APPROX 100' AGL BUG + 10, AS WE DSNDED, AIRSPD WENT TO BUG AT APPROX 50' AGL AND I GRABBED THROTTLES AND ADDED MAX PWR AS THE AIRPLANE HAD STARTED TO SETTLE. WE CONTACTED THE RWY FIRMLY AND BOUNCED (TWR LATER ESTIMATED 15-20' IN AIR). RATHER THAN ATTEMPT TO PUT PLANE BACK ON RWY, WE ELECTED TO GO AROUND. WHILE IN CLBOUT TWR RPTED WIND SHEAR ALERT. LNDG WAS MADE BY ME ON SECOND APCH. RAMP SVCMAN LATER TOLD ME, JUST BEFORE OUR FIRST ATTEMPT, THE FLAGS ON TERMINAL BLDG SWITCHED POS INDICATING A CHANGE IN DIRECTION OF WIND. RPTED BOUNCE TO CHIEF PLT, DISPATCH, CHIEF DISPATCHER AND TECHNICAL SVCS. MAINT DID A HARD LNDG INSPECTION AND NO DAMAGE WAS FOUND. ATIS E60 BROKEN 25 BROKEN 15, 60 DEGS 34 DEGS 290 DEGS 17 29.53, VISUAL TO 29.

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.