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NTSB Identification: MIA00LA099. The docket is stored in the (offline) NTSB Imaging System.

Accident occurred Monday, February 28, 2000 at BROOKSVILLE, FL

Aircraft: Cessna 150L, registration: N717NC

Injuries: 1 Serious, 1 Minor



Event: 20001212X20543 Status: Final Report Approved On Wednesday, November 29, 2000



NTSB Preliminary Narrative (6120.19A)



On February 28, 2000, at about 1512 eastern standard time, a Cessna 150L, N717NC, registered to Nosworthy Corporation, operating as a 14

CFR Part 91 personal flight, crashed on approach to landing at Pilot Country Airport (X05), Brooksville, Florida. Visual meteorological conditions

prevailed and no flight plan was filed. The airplane sustained substantial damage. The private pilot reported minor injures. The private pilot

passenger sustained serious injuries. The flight originated from Pilot Country Airport about 5 minutes before the accident.



The pilot stated he had landed at X05 and taxied back for takeoff. He remained in left closed traffic for runway 36. Upon reaching his abeam

point for his intended point of landing, he applied carburetor heat, reduced power, turned left base, applied flaps 40 degrees, and pushed the

throttle in to clear the engine. The engine did not clear. He added power with no response. He pushed the throttle all the way in with negative

results, turned final and lined up so as to land over the lowest part of an earth berm running perpendicular to the end of the runway. He lined up

with a grass strip alongside the runway flying just above stall speed. He realized the berm was coming closer. He applied aft pressure on the

control yoke and hit the berm with all 3 landing gear, and the airplane came to rest inverted.



Examination of the airplane wreckage revealed the carburetor heat was found in the off position. Damage at the bottom of the carburetor air

box revealed that the air valve was in the open position, no carburetor heat applied. Examination of the engine revealed no mechanical reason

for the engine failing to maintain power. For additional information see FAA Inspector statement and Continental Motors Accident Investigation

Report.



The engine assembly was removed and transported to Certified Engines Unlimited, Inc., an authorized FAA approved repair station. The engine

was placed in a test cell. The engine developed rated power and achieved takeoff power.



Review of the probability carburetor icing chart revealed the engine would encounter serious icing at descent power based on the weather

observation at the time of the accident.



NTSB Final Narrative (6120.4)



The pilot stated he applied carburetor heat abeam his inten ded landing touch down point. He turned base leg and increased power to clear the

engine. The engine did not respond. The airplane collided with a berm/dirt bank and nosed over inverted. Examination of the airplane wreckage

and carburetor air box revealed the carburetor heat and carburetor air box was in the off position. Examination of the engine assembly revealed

no evidence of a mechanical malfunction. The engine assembly was removed and transported to an authorized repair facility for an engine run.

The engine started, developed rated power and achieved takeoff power. Review of the Carburetor icing chart revealed the engine would

encounter serious icing at descent power based on the weather conditions at the time of the accident.



NTSB Probable Cause Narrative



Total loss of engine power for undetermined reasons on appr oach for landing resulting in an in-flight collision with a dirt bank, separation of the

main landing gear, and subsequent nose over. Contributing to the accident was carburetor icing conditions.



Occurrences and Sequence of Events

Occurrence: 1, LOSS OF ENGINE POWER

Phase of Operation: APPROACH - VFR PATTERN - BASE TURN



Sequence of Events for Occurrence Number: 1

1 ( Cause ) POWERPLANT / UNDETERMINED / (0)

2 ( Factor ) ANTI-ICE/DEICE SYSTEM, CARBURETOR/HEAT / ICE / (0)



Occurrence: 2, IN FLIGHT COLLISION WITH TERRAIN/WATER

Phase of Operation: DESCENT



Sequence of Events for Occurrence Number: 2

1 (Finding) TERRAIN CONDITIONS / DIRT BANK/RISING EMBANKMENT / (0)

2 (Finding) LANDING GEAR / SEPARATION / (0)



Occurrence: 3, NOSE OVER

Phase of Operation: LANDING


 

 

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