Narrative:

During missed approach and go around; shortly after PF called for flaps 8 degrees and gear up; we encountered light to moderate turbulence followed by a 'don't sink' aural warning. A rate of descent of 800-1000 FPM was noted. Full power was confirmed and the nose attitude was further adjusted upward but we still had the don't sink aural warning and a vertical speed of 500 FPM down for approximately 5 more seconds. Our resulting high pitch attitude and excessive airspeed and reluctance to over control the aircraft at this point carried us to 3800 ft MSL; 800 ft above the assigned altitude. A second approach was made without further incident. Supplemental information from acn 693008: I was the PF and executed a pre-planned missed approach. I hit the toga button; applied GA thrust; asked the PNF to select the flaps to 8 degrees; achieved a positive rate of climb; and asked the PNF to select the landing gear up. As we climbed through about 1200 ft MSL; I asked the PNF to select heading and speed mode on the flight director and bug our tower assigned heading of 120 degrees. As I entered the right turn; we encountered moderate turbulence; followed by a downward trend on the vsi. The vsi then showed a descent and the GPWS gave the alert 'don't sink.'

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Original NASA ASRS Text

Title: CL65 FLT CREW ENCOUNTERS WINDSHEAR DURING A MISSED APCH; RECEIVES A GPWS ALERT OF 'DON'T SINK;' REGAINS A POSITIVE RATE OF CLB AND EXITS THE ADVERSE CONDITIONS.

Narrative: DURING MISSED APCH AND GAR; SHORTLY AFTER PF CALLED FOR FLAPS 8 DEGS AND GEAR UP; WE ENCOUNTERED LIGHT TO MODERATE TURB FOLLOWED BY A 'DON'T SINK' AURAL WARNING. A RATE OF DSCNT OF 800-1000 FPM WAS NOTED. FULL PWR WAS CONFIRMED AND THE NOSE ATTITUDE WAS FURTHER ADJUSTED UPWARD BUT WE STILL HAD THE DON'T SINK AURAL WARNING AND A VERT SPD OF 500 FPM DOWN FOR APPROX 5 MORE SECONDS. OUR RESULTING HIGH PITCH ATTITUDE AND EXCESSIVE AIRSPD AND RELUCTANCE TO OVER CTL THE ACFT AT THIS POINT CARRIED US TO 3800 FT MSL; 800 FT ABOVE THE ASSIGNED ALT. A SECOND APCH WAS MADE WITHOUT FURTHER INCIDENT. SUPPLEMENTAL INFO FROM ACN 693008: I WAS THE PF AND EXECUTED A PRE-PLANNED MISSED APCH. I HIT THE TOGA BUTTON; APPLIED GA THRUST; ASKED THE PNF TO SELECT THE FLAPS TO 8 DEGS; ACHIEVED A POSITIVE RATE OF CLB; AND ASKED THE PNF TO SELECT THE LNDG GEAR UP. AS WE CLBED THROUGH ABOUT 1200 FT MSL; I ASKED THE PNF TO SELECT HDG AND SPD MODE ON THE FLT DIRECTOR AND BUG OUR TWR ASSIGNED HDG OF 120 DEGS. AS I ENTERED THE R TURN; WE ENCOUNTERED MODERATE TURB; FOLLOWED BY A DOWNWARD TREND ON THE VSI. THE VSI THEN SHOWED A DSCNT AND THE GPWS GAVE THE ALERT 'DON'T SINK.'

Data retrieved from NASA's ASRS site as of January 2009 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.