|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||atc facility : ocf|
airport : x40
|Altitude||agl bound lower : 100|
agl bound upper : 100
|Controlling Facilities||tower : gfk|
|Operator||general aviation : instructional|
|Make Model Name||Small Aircraft, Low Wing, 1 Eng, Fixed Gear|
|Flight Phase||descent other|
|Function||instruction : instructor|
|Qualification||pilot : cfi|
pilot : commercial
pilot : instrument
|Experience||flight time last 90 days : 100|
flight time total : 950
flight time type : 40
|Function||instruction : trainee|
|Qualification||other other : other|
|Anomaly||conflict : ground critical|
inflight encounter : weather
other anomaly other
other spatial deviation
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : insufficient time|
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
Cfii simulated engine failure at 3000 ft. Student picked airstrip directly below us as his emergency landing field, then did his emergency procedures. Spiraled down at best glidespd. Entered downwind at 1000 ft, turned base at 700 ft and final at 500 ft. Was on the glidepath, at glidespd with power at idle sudden altitude drop. Cfii applied full power. Engine picked up normal but airplane kept losing altitude. Hit tree top with the leading edge of our right wing about midwing followed by a go around. Didn't land at our emergency field. Had enough airspeed to go around climbed up to 1500 ft, there we checked out the plane and observed that the flight characteristics were not adversely affected. We returned to ocala airport and made a normal uneventful landing. Post-flight inspection revealed that the dent in the leading edge of the right wing was plus or minus 2 ft in length and plus or minus 3 inches at the center. Contributing factors: reported winds at ocf nearest airport with AWOS winds 240/10 gusting up to 17 KTS. How it was discovered: sudden altitude drop. Corrective actions: applied full power and try to maintain altitude since we still had our airspeed. Airplane was never stalled. Judgement-decisions: everything seemed normal to me. We were on our glide angle with best glidespd. There was nothing I could do to prevent the altitude loss from happening. I applied full power and leveled off to prevent to a further descent. What really caused the problem: suspected windshear. What can be done to prevent recurrence: no simulated emergencys when windshear conditions exist.
Original NASA ASRS Text
Title: A CFII IN AN SMA WAS PRACTICING ENG OUT EMERS WITH A STUDENT WHEN HE HIT THE TOP OF A TREE. THERE WERE WIND GUSTS AND WINDSHEAR IN THE AREA. THERE WERE NO INJURIES, BUT THE ACFT WAS DAMAGED.
Narrative: CFII SIMULATED ENG FAILURE AT 3000 FT. STUDENT PICKED AIRSTRIP DIRECTLY BELOW US AS HIS EMER LNDG FIELD, THEN DID HIS EMER PROCS. SPIRALED DOWN AT BEST GLIDESPD. ENTERED DOWNWIND AT 1000 FT, TURNED BASE AT 700 FT AND FINAL AT 500 FT. WAS ON THE GLIDEPATH, AT GLIDESPD WITH PWR AT IDLE SUDDEN ALT DROP. CFII APPLIED FULL PWR. ENG PICKED UP NORMAL BUT AIRPLANE KEPT LOSING ALT. HIT TREE TOP WITH THE LEADING EDGE OF OUR R WING ABOUT MIDWING FOLLOWED BY A GAR. DIDN'T LAND AT OUR EMER FIELD. HAD ENOUGH AIRSPD TO GAR CLBED UP TO 1500 FT, THERE WE CHKED OUT THE PLANE AND OBSERVED THAT THE FLT CHARACTERISTICS WERE NOT ADVERSELY AFFECTED. WE RETURNED TO OCALA ARPT AND MADE A NORMAL UNEVENTFUL LNDG. POST-FLT INSPECTION REVEALED THAT THE DENT IN THE LEADING EDGE OF THE R WING WAS PLUS OR MINUS 2 FT IN LENGTH AND PLUS OR MINUS 3 INCHES AT THE CTR. CONTRIBUTING FACTORS: RPTED WINDS AT OCF NEAREST ARPT WITH AWOS WINDS 240/10 GUSTING UP TO 17 KTS. HOW IT WAS DISCOVERED: SUDDEN ALT DROP. CORRECTIVE ACTIONS: APPLIED FULL PWR AND TRY TO MAINTAIN ALT SINCE WE STILL HAD OUR AIRSPD. AIRPLANE WAS NEVER STALLED. JUDGEMENT-DECISIONS: EVERYTHING SEEMED NORMAL TO ME. WE WERE ON OUR GLIDE ANGLE WITH BEST GLIDESPD. THERE WAS NOTHING I COULD DO TO PREVENT THE ALT LOSS FROM HAPPENING. I APPLIED FULL PWR AND LEVELED OFF TO PREVENT TO A FURTHER DSCNT. WHAT REALLY CAUSED THE PROBLEM: SUSPECTED WINDSHEAR. WHAT CAN BE DONE TO PREVENT RECURRENCE: NO SIMULATED EMERS WHEN WINDSHEAR CONDITIONS EXIST.
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.