20071019825139A

Accident · Substantial damage

FAA accident report · Robsin R44RAVENII · Morrison, MO · October 19, 2007

Date
October 19, 2007 · 16:25 local
Place
Morrison, MO
Phase of flight
Slope Landing
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N3246H
NTSB investigation
NTSBCHI08CA023
Reported as
Robsin R44RAVENII
Reported engine
Lycoming IO540AE1A5
People aboard
1
Fatal injuries
0
Pilot’s flight hours
2,400 total38 in this make and model20 in the last 90 days

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.

(-23) On October 19, 2007, the pilot privacy data omitted flew his privately owned Robinson R-44 ii helicopter for personal transportation to an associates farm. Upon initiating his landing in what the pilot privacy data omitted referred to as somewhat windy conditions, he lost control of the aircraft resulting in this accident. The pilot privacy data omitted stated after touching the aircraft skids on the ground, it began to oscillate fore and aft. The pilot privacy data omitted stated that the ocillations increased in intensity until the main rotor contacted the ground resulting in the rollover of the aircraft. A witness to this accident, privacy data omitted, concurred with these observations. I observed the aircraft to be resting on its left side with its nose facing 105 degrees. The area in which the landing was attempted was approximately a five degree incline on an unimproved grassy area. Both main rotors had separated from the rotor head and the rotor mast fairings indicated approximately a five degree incline on an unimproved grassy area. Both main rotors had separated from the rotor head and the rotor mast fairings indicated torsion stress. The tail boom and tail rotor "stinger" had been bent at the fuselage attach point. There were three witness marks on the ground at the area of the tail boom indicating the location that the main rotors made contact. The left front skid tip forward of the strut attachment point had separated.

As the FAA filed it

(-23) ON OCTOBER 19, 2007, THE PILOT ^PRIVACY DATA OMITTED^ FLEW HIS PRIVATELY OWNED ROBINSON R-44 II HELICOPTER FOR PERSONAL TRANSPORTATION TO AN ASSOCIATES FARM. UPON INITIATING HIS LANDING IN WHAT THE PILOT ^PRIVACY DATA OMITTED^ REFERRED TO AS SOMEWHAT WINDY CONDITIONS, HE LOST CONTROL OF THE AIRCRAFT RESULTING IN THIS ACCIDENT. THE PILOT ^PRIVACY DATA OMITTED^ STATED AFTER TOUCHING THE AIRCRAFT SKIDS ON THE GROUND, IT BEGAN TO OSCILLATE FORE AND AFT. THE PILOT ^PRIVACY DATA OMITTED^ STATED THAT THE OCILLATIONS INCREASED IN INTENSITY UNTIL THE MAIN ROTOR CONTACTED THE GROUND RESULTING IN THE ROLLOVER OF THE AIRCRAFT. A WITNESS TO THIS ACCIDENT, ^PRIVACY DATA OMITTED^, CONCURRED WITH THESE OBSERVATIONS. I OBSERVED THE AIRCRAFT TO BE RESTING ON ITS LEFT SIDE WITH ITS NOSE FACING 105 DEGREES. THE AREA IN WHICH THE LANDING WAS ATTEMPTED WAS APPROXIMATELY A FIVE DEGREE INCLINE ON AN UNIMPROVED GRASSY AREA. BOTH MAIN ROTORS HAD SEPARATED FROM THE ROTOR HEAD AND THE ROTOR MAST FAIRINGS INDICATED APPROXIMATELY A FIVE DEGREE INCLINE ON AN UNIMPROVED GRASSY AREA. BOTH MAIN ROTORS HAD SEPARATED FROM THE ROTOR HEAD AND THE ROTOR MAST FAIRINGS INDICATED TORSION STRESS. THE TAIL BOOM AND TAIL ROTOR "STINGER" HAD BEEN BENT AT THE FUSELAGE ATTACH POINT. THERE WERE THREE WITNESS MARKS ON THE GROUND AT THE AREA OF THE TAIL BOOM INDICATING THE LOCATION THAT THE MAIN ROTORS MADE CONTACT. THE LEFT FRONT SKID TIP FORWARD OF THE STRUT ATTACHMENT POINT HAD SEPARATED.

NTSB investigation

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