19980128006179A

Accident · Substantial damage

FAA accident report · Amtr MINI 500 · Newberg, OR · January 28, 1998

Date: January 28, 1998 · 15:50 local
Place: Newberg, OR
Airport: Sportsman Airpark Airport
Phase of flight: Forced/Precautionary Landing
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N500YY
NTSB investigation: NTSBSEA98LA030
Reported as: Amtr MINI500
Reported engine: ROTAX ROTAX582UL
People aboard: 1
Fatal injuries: 0
Pilot’s flight hours: 22,000 total48 in this make and model100 in the last 90 days

N500YYRegistration cancelled Aug 16, 2016 · Raser Ralph W MINI 500S/N 298 · Built 1997 Airframe modelRaser Ralph W MINI 500 Engine modelBombardier ROTAX (ALL)Reciprocating

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Engine quit on liftoff. Autorotated yawing on touchdown. Skid collapsed. Helicopter roller over. (.4)the pilot reported that he had just lifted off and attained an altitude of about 20 feet, when the engine experienced a loss of power. The pilot initiated an autorotation near the end of the airpark. The pilot stated that the helicopter was yawed slightly to the left on touchdown to a plowed muddy area. The right side landing skid collapsed and the helicopter rolled over. Inspection of the engine revealed that one of the two cylinders would not hold compression. Further inspection found evidence of overheating and damage to the rings on the piston. The pilot reported that the engine had been experiencing heating problems, and that he had also modified the carburetor. (-23)pilot departed Newberg, OR airport. At 20 ft. altitude the engine seized. Pilot autorotated into a plowed field, with approx. 20 crab angle. Rolled the helicopter to the right when the skid failed.

As the FAA filed it

ENGINE QUIT ON LIFTOFF. AUTOROTATED YAWING ON TOUCHDOWN. SKID COLLAPSED. HELICOPTER ROLLER OVER. (.4)THE PILOT REPORTED THAT HE HAD JUST LIFTED OFF AND ATTAINED AN ALTITUDE OF ABOUT 20 FEET, WHEN THE ENGINE EXPERIENCED A LOSS OF POWER. THE PILOT INITIATED AN AUTOROTATION NEAR THE END OF THE AIRPARK. THE PILOT STATED THAT THE HELICOPTER WAS YAWED SLIGHTLY TO THE LEFT ON TOUCHDOWN TO A PLOWED MUDDY AREA. THE RIGHT SIDE LANDING SKID COLLAPSED AND THE HELICOPTER ROLLED OVER. INSPECTION OF THE ENGINE REVEALED THAT ONE OF THE TWO CYLINDERS WOULD NOT HOLD COMPRESSION. FURTHER INSPECTION FOUND EVIDENCE OF OVERHEATING AND DAMAGE TO THE RINGS ON THE PISTON. THE PILOT REPORTED THAT THE ENGINE HAD BEEN EXPERIENCING HEATING PROBLEMS, AND THAT HE HAD ALSO MODIFIED THE CARBURETOR. (-23)PILOT DEPARTED NEWBERG, OR AIRPORT. AT 20 FT. ALTITUDE THE ENGINE SEIZED. PILOT AUTOROTATED INTO A PLOWED FIELD, WITH APPROX. 20 CRAB ANGLE. ROLLED THE HELICOPTER TO THE RIGHT WHEN THE SKID FAILED.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB SEA98LA030Accident · No injuriesLimited investigationFinal reportNewberg, ORa power loss resulting from overtemperature of a cylinder. The pilot's operation with known deficiencies was a factor.Jan 28, 1998 · Substantial damage