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ASN Wikibase Occurrence # 150113
Last updated: 13 September 2020
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Type:Silhouette image of generic S55P model; specific model in this crash may look slightly different
Sikorsky S-55B
Owner/operator:Sparta Rotors
Registration: N443FD
C/n / msn: 55-1046
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:716 Kitchawan Rd, Yorktown -   United States of America
Phase: Landing
Departure airport:Newton, NJ (3N5)
Destination airport:Stratford, CT (JSD)
Investigating agency: NTSB
During cruise flight, the pilot heard an unusual noise and, after circling while attempting to determine the source of the noise, he elected to perform a precautionary landing to a nearby farm field. During the approach to land with a quartering tailwind, the pilot used the collective to arrest the descent rate; however, after having used the full travel of the collective with no appreciable reduction in the descent rate, the helicopter landed in the soft ground, all four landing gear sank, and the helicopter rolled over and came to rest on its left side. No preimpact mechanical malfunctions or anomalies were noted that would have precluded normal operation. A nearby weather recording station recorded the wind about the time of the accident as being from the north-northwest at 12 knots, gusting to 16 knots. According to the pilot, the helicopter was moving forward at a speed of about 10 knots at touchdown. Considering the tailwind and the helicopter's low airspeed, it is likely that the airspeed slowed to the point where the helicopter lost translational lift and began to settle with power.
Probable Cause: The pilot's improper decision to perform a downwind precautionary landing and the helicopterís resultant settling with power and impact with terrain.



Revision history:

13-Oct-2012 03:43 gerard57 Added
13-Oct-2012 05:24 Alpine Flight Updated [Time, Aircraft type]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
28-Nov-2017 13:44 ASN Update Bot Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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