Narrative:

I departed from W36 for bkt via ptb. I stayed above 3500 ft until I verified that the bkt tower was not in operation. Then I called CTAF and was advised winds were favoring runway 19. I pulled the power to 1000 RPM to descend, with carburetor heat. Around 1400 ft I added 10 degrees of flaps and did my landing checks, 1 1/2 - 2 mi north of bkt field. I advanced the throttle with no response. I slowed to best glide speed 65 KTS, did my emergency checks, looked for the lowest spot in the tree line, and the best place to land on the displaced threshold as it was apparent that I would not make the runway. I landed on the displaced threshold and came to a stop on the arrival end of runway 19. The engine was running at 800-900 RPM. I slowly taxied to the ramp. The airport manager came out to meet me, and we looked into the cowling. There we discovered that the bolt connecting the throttle cable to the carburetor had fallen out. We also found the nut, that should have been holding the bolt in place, on top of the carburetor. After calling the FBO, I learned that a new carburetor had been installed the day before (nov/sat/93). Apparently during installation the cotter pin had not been put through the bolt to hold the nut in place, or the nut had not been put on at all. The management at the FBO sent a pilot with a mechanic to blackstone to fix the problem. The mechanic fixed and tested the plane, all worked well. I then flew back to W36 without further problems. When I got back I talked with the FBO I rented the plane from, another FBO, and a pilot's association, and was told by all 3 that it was not necessary to file a report with the FAA or NTSB since there were no injuries or damage to the plane or other property. Please let me know, if you can, if their advise was correct. Callback conversation with reporter revealed the following: callback made to confirm reporter question regarding reports to FAA or NTSB. Advised him that his advice was correct. No injury, no damage, no request to report so he does not need to do so.

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Original NASA ASRS Text

Title: SMA HAS ROUGH ENG, LOW RPM. UNABLE TO MAKE LNDG ON RWY, USES DISPLACED THRESHOLD.

Narrative: I DEPARTED FROM W36 FOR BKT VIA PTB. I STAYED ABOVE 3500 FT UNTIL I VERIFIED THAT THE BKT TWR WAS NOT IN OP. THEN I CALLED CTAF AND WAS ADVISED WINDS WERE FAVORING RWY 19. I PULLED THE PWR TO 1000 RPM TO DSND, WITH CARB HEAT. AROUND 1400 FT I ADDED 10 DEGS OF FLAPS AND DID MY LNDG CHKS, 1 1/2 - 2 MI N OF BKT FIELD. I ADVANCED THE THROTTLE WITH NO RESPONSE. I SLOWED TO BEST GLIDE SPD 65 KTS, DID MY EMER CHKS, LOOKED FOR THE LOWEST SPOT IN THE TREE LINE, AND THE BEST PLACE TO LAND ON THE DISPLACED THRESHOLD AS IT WAS APPARENT THAT I WOULD NOT MAKE THE RWY. I LANDED ON THE DISPLACED THRESHOLD AND CAME TO A STOP ON THE ARR END OF RWY 19. THE ENG WAS RUNNING AT 800-900 RPM. I SLOWLY TAXIED TO THE RAMP. THE ARPT MGR CAME OUT TO MEET ME, AND WE LOOKED INTO THE COWLING. THERE WE DISCOVERED THAT THE BOLT CONNECTING THE THROTTLE CABLE TO THE CARB HAD FALLEN OUT. WE ALSO FOUND THE NUT, THAT SHOULD HAVE BEEN HOLDING THE BOLT IN PLACE, ON TOP OF THE CARB. AFTER CALLING THE FBO, I LEARNED THAT A NEW CARB HAD BEEN INSTALLED THE DAY BEFORE (NOV/SAT/93). APPARENTLY DURING INSTALLATION THE COTTER PIN HAD NOT BEEN PUT THROUGH THE BOLT TO HOLD THE NUT IN PLACE, OR THE NUT HAD NOT BEEN PUT ON AT ALL. THE MGMNT AT THE FBO SENT A PLT WITH A MECH TO BLACKSTONE TO FIX THE PROB. THE MECH FIXED AND TESTED THE PLANE, ALL WORKED WELL. I THEN FLEW BACK TO W36 WITHOUT FURTHER PROBS. WHEN I GOT BACK I TALKED WITH THE FBO I RENTED THE PLANE FROM, ANOTHER FBO, AND A PLT'S ASSOCIATION, AND WAS TOLD BY ALL 3 THAT IT WAS NOT NECESSARY TO FILE A RPT WITH THE FAA OR NTSB SINCE THERE WERE NO INJURIES OR DAMAGE TO THE PLANE OR OTHER PROPERTY. PLEASE LET ME KNOW, IF YOU CAN, IF THEIR ADVISE WAS CORRECT. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: CALLBACK MADE TO CONFIRM RPTR QUESTION REGARDING RPTS TO FAA OR NTSB. ADVISED HIM THAT HIS ADVICE WAS CORRECT. NO INJURY, NO DAMAGE, NO REQUEST TO RPT SO HE DOES NOT NEED TO DO SO.

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.