OpenAirDocs.org

19980521010339A

Accident · Destroyed
Open the Markdown

FAA accident report · Amtr GENESIS · Maple Lake, MN · May 21, 1998

FAA Aviation Safety Information Portal

© OpenStreetMap
Date
May 21, 1998 · 18:17 local
Place
Maple Lake, MN
Airport
Maple Lake Municipal Airport
Phase of flight
To Init Climb(1st Pwr Reduct)
Operating rules
General operating rules (Part 91)
Damage
Destroyed
Aircraft
N68474
NTSB investigation
NTSBCHI98LA170
Reported as
Amtr Genesis
Reported engine
AMTR EA81
People aboard
2
Fatal injuries
2
Pilot’s flight hours
130 total
N68474Registration cancelled Jul 27, 1999 · Kreatz George A GENESISS/N 037Airframe modelKreatz George A GENESIS

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.

Climbed to 100FT AGL when it nosed down and impacted terrain. (.4)witnesses reported the engine sounded normal during the takeoff roll and that the airplane rotated normally. Witnesses reported the airplane climbed to about 100 to 200 feet when the engine revved up 'really high' to what sounded like 1,000 rpm's higher than normal takeoff power. A witness reported the airplane went into a 60 degree left bank, and then the airplane turned right into an 80 degrees nose dive. The airplane went straight down and did not spin. The stall speed of the airplane was 50 mph. The airspeed indicator was found with the needle stuck at approximately 41 mph. The engine and flight controls exhibited continuity and no pre-impact anomalies were revealed. The engine was modified for airplane use by utilizing a propeller belt reduction drive to reduce the engine rpm's to approximately 2,500 propeller rpm's. the two 30 mm wide reduction drive belts were not found at the impact site. Searches for the drive belts were made of the surrounding area on two separate occasions but without success.

As the FAA filed it

CLIMBED TO 100FT AGL WHEN IT NOSED DOWN AND IMPACTED TERRAIN. (.4)WITNESSES REPORTED THE ENGINE SOUNDED NORMAL DURING THE TAKEOFF ROLL AND THAT THE AIRPLANE ROTATED NORMALLY. WITNESSES REPORTED THE AIRPLANE CLIMBED TO ABOUT 100 TO 200 FEET WHEN THE ENGINE REVVED UP 'REALLY HIGH' TO WHAT SOUNDED LIKE 1,000 RPM'S HIGHER THAN NORMAL TAKEOFF POWER. A WITNESS REPORTED THE AIRPLANE WENT INTO A 60 DEGREE LEFT BANK, AND THEN THE AIRPLANE TURNED RIGHT INTO AN 80 DEGREES NOSE DIVE. THE AIRPLANE WENT STRAIGHT DOWN AND DID NOT SPIN. THE STALL SPEED OF THE AIRPLANE WAS 50 MPH. THE AIRSPEED INDICATOR WAS FOUND WITH THE NEEDLE STUCK AT APPROXIMATELY 41 MPH. THE ENGINE AND FLIGHT CONTROLS EXHIBITED CONTINUITY AND NO PRE-IMPACT ANOMALIES WERE REVEALED. THE ENGINE WAS MODIFIED FOR AIRPLANE USE BY UTILIZING A PROPELLER BELT REDUCTION DRIVE TO REDUCE THE ENGINE RPM'S TO APPROXIMATELY 2,500 PROPELLER RPM'S. THE TWO 30 MM WIDE REDUCTION DRIVE BELTS WERE NOT FOUND AT THE IMPACT SITE. SEARCHES FOR THE DRIVE BELTS WERE MADE OF THE SURROUNDING AREA ON TWO SEPARATE OCCASIONS BUT WITHOUT SUCCESS.

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 CHI98LA170Accident · 2 fatalLimited investigationFinal reportMaple Lake, MNthe pilot inadvertently stalled the airplane. A factor was the failed reduction drive belts.May 21, 1998 · Destroyed