Narrative:

Preflight, pushback and engine start was normal; on time ready for taxi, but neither one of us could get an answer from ground. After about 10 min of switching around we found that if I deselected everything on my communication panel all radios were ok and I could communication using the observers communication panel. During takeoff roll the leading edge flaps in transit light illuminated at approximately 50 KTS. Takeoff was rejected, checklists completed and aircraft returned to gate for maintenance. Maintenance could find nothing wrong with the flaps and signed it off as 'could not duplicate.' the communications problem was found to be a short in the captain's microphone. Everything was normal on the second attempt until the leading edge in transit light came on again at approximately 120 KTS on takeoff roll. I confirmed the flaps were down on the overhead panel and continued the takeoff. Approximately 10 seconds after liftoff, the stick shaker activated. I increased airspeed to the maximum for the flap setting while maintaining a slow climb. The flaps were raised and the climb continued with the aircraft performing normally except for the stick shaker. We completed the checklist and began to troubleshoot. The stick shaker stopped on its own passing 10000'. The aircraft continued to perform normally in the climb and we put the aircraft in a holding pattern to confer with maintenance and operations prior to committing ourselves to completing the flight to 2 island destinations with no maintenance. I decided to return to miami. We returned to a holding pattern over bsy VOR at 3000' to burn down to landing weight. We consulted abnormal checklists 'malfunctioning leading edgeflaps' and 'erroneous airspeed indication.' we configured the aircraft for landing while in the holding patter, the stick shaker came on again at approximately 200 KIAS at flaps 5 degree. I increased airspeed to above stick shaker and the first officer went to the cabin to confirm proper flap extension. We continued the approach to an uneventful landing. It appears that the stall warning vane was damaged during the overnight in mia. The damage was not easily detected, as neither maintenance or the first officer saw it on walk around, nor maintenance after the aborted takeoff.

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Original NASA ASRS Text

Title: ACR MLG STALL WARNING ACTIVATED DURING CLIMB. RETURN LAND.

Narrative: PREFLT, PUSHBACK AND ENG START WAS NORMAL; ON TIME READY FOR TAXI, BUT NEITHER ONE OF US COULD GET AN ANSWER FROM GND. AFTER ABOUT 10 MIN OF SWITCHING AROUND WE FOUND THAT IF I DESELECTED EVERYTHING ON MY COM PANEL ALL RADIOS WERE OK AND I COULD COM USING THE OBSERVERS COM PANEL. DURING TKOF ROLL THE LEADING EDGE FLAPS IN TRANSIT LIGHT ILLUMINATED AT APPROX 50 KTS. TKOF WAS REJECTED, CHKLISTS COMPLETED AND ACFT RETURNED TO GATE FOR MAINT. MAINT COULD FIND NOTHING WRONG WITH THE FLAPS AND SIGNED IT OFF AS 'COULD NOT DUPLICATE.' THE COMS PROB WAS FOUND TO BE A SHORT IN THE CAPT'S MICROPHONE. EVERYTHING WAS NORMAL ON THE SEC ATTEMPT UNTIL THE LEADING EDGE IN TRANSIT LIGHT CAME ON AGAIN AT APPROX 120 KTS ON TKOF ROLL. I CONFIRMED THE FLAPS WERE DOWN ON THE OVERHEAD PANEL AND CONTINUED THE TKOF. APPROX 10 SECS AFTER LIFTOFF, THE STICK SHAKER ACTIVATED. I INCREASED AIRSPD TO THE MAX FOR THE FLAP SETTING WHILE MAINTAINING A SLOW CLB. THE FLAPS WERE RAISED AND THE CLB CONTINUED WITH THE ACFT PERFORMING NORMALLY EXCEPT FOR THE STICK SHAKER. WE COMPLETED THE CHKLIST AND BEGAN TO TROUBLESHOOT. THE STICK SHAKER STOPPED ON ITS OWN PASSING 10000'. THE ACFT CONTINUED TO PERFORM NORMALLY IN THE CLB AND WE PUT THE ACFT IN A HOLDING PATTERN TO CONFER WITH MAINT AND OPS PRIOR TO COMMITTING OURSELVES TO COMPLETING THE FLT TO 2 ISLAND DESTS WITH NO MAINT. I DECIDED TO RETURN TO MIAMI. WE RETURNED TO A HOLDING PATTERN OVER BSY VOR AT 3000' TO BURN DOWN TO LNDG WEIGHT. WE CONSULTED ABNORMAL CHKLISTS 'MALFUNCTIONING LEADING EDGEFLAPS' AND 'ERRONEOUS AIRSPD INDICATION.' WE CONFIGURED THE ACFT FOR LNDG WHILE IN THE HOLDING PATTER, THE STICK SHAKER CAME ON AGAIN AT APPROX 200 KIAS AT FLAPS 5 DEG. I INCREASED AIRSPD TO ABOVE STICK SHAKER AND THE F/O WENT TO THE CABIN TO CONFIRM PROPER FLAP EXTENSION. WE CONTINUED THE APCH TO AN UNEVENTFUL LNDG. IT APPEARS THAT THE STALL WARNING VANE WAS DAMAGED DURING THE OVERNIGHT IN MIA. THE DAMAGE WAS NOT EASILY DETECTED, AS NEITHER MAINT OR THE F/O SAW IT ON WALK AROUND, NOR MAINT AFTER THE ABORTED TKOF.

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.