|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||atc facility : lex|
|Altitude||agl bound lower : 0|
agl bound upper : 1000
|Controlling Facilities||tower : twr|
tracon : phl
|Operator||general aviation : instructional|
|Make Model Name||Small Aircraft, High Wing, 1 Eng, Fixed Gear|
|Function||flight crew : single pilot|
|Qualification||pilot : private|
|Experience||flight time last 90 days : 70|
flight time total : 2200
|Affiliation||government : faa|
|Function||controller : local|
|Qualification||controller : non radar|
|Anomaly||aircraft equipment problem : less severe|
other anomaly other
|Independent Detector||other flight crewa|
|Air Traffic Incident||other|
On takeoff on 85 degrees F day, noticed longer than normal takeoff roll and very poor rate of climb. At first thought it was probably normal considering 100 hp aircraft, fully loaded on hot day, but decided to return for landing anyway to be safe. Mechanic discovered that carburetor heat cable needed adjustment and carburetor heat may have been partially on when carburetor heat control was off. Later test flight found normal performance. I wasn't previously aware that this type of malfunction was possible. Pilot who flew the plane before me also noted poor performance, but continued flight thinking it was only a result of high density altitude. He did not squawk a problem. When in doubt about a problem, pilots should check it out.
Original NASA ASRS Text
Title: SMA PLT EXPERIENCES POOR PERFORMANCE ON TKOF AND CLIMB. RETURNS TO LAND.
Narrative: ON TKOF ON 85 DEGS F DAY, NOTICED LONGER THAN NORMAL TKOF ROLL AND VERY POOR RATE OF CLB. AT FIRST THOUGHT IT WAS PROBABLY NORMAL CONSIDERING 100 HP ACFT, FULLY LOADED ON HOT DAY, BUT DECIDED TO RETURN FOR LNDG ANYWAY TO BE SAFE. MECH DISCOVERED THAT CARB HEAT CABLE NEEDED ADJUSTMENT AND CARB HEAT MAY HAVE BEEN PARTIALLY ON WHEN CARB HEAT CONTROL WAS OFF. LATER TEST FLT FOUND NORMAL PERFORMANCE. I WASN'T PREVIOUSLY AWARE THAT THIS TYPE OF MALFUNCTION WAS POSSIBLE. PLT WHO FLEW THE PLANE BEFORE ME ALSO NOTED POOR PERFORMANCE, BUT CONTINUED FLT THINKING IT WAS ONLY A RESULT OF HIGH DENSITY ALT. HE DID NOT SQUAWK A PROB. WHEN IN DOUBT ABOUT A PROB, PLTS SHOULD CHK IT OUT.
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.