NTSB Identification: NYC84FA016.
The docket is stored on NTSB microfiche number 23458.
Accident occurred Friday, October 28, 1983 in LITTLETON, MA
Aircraft: BELLANCA 17-31 ATC, registration: N6586V
Injuries: 2 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

GROUND WITNESSES OBSERVED THE RIGHT WING SEPARATE IN FLIGHT, THE ACFT BANK SHARPLY TO THE RIGHT ENTERED A SPIRAL DIVE AND CRASHED INTO A WOODED LOT IN A RESIDENTIAL AREA. INVESTIGATION REVEALED THAT THE RIGHT WING SEPARATION OCCURRED WHEN THE FRONT SPAR LOWER WING ATTACH FITTING PULLED FREE OF THE WING SPAR. THE FAILURE WAS THE RESULT OF WOOD DETERIORATION IN THE LOWER ROOT END SECTION OF THE RIGHT WING FRONT SPAR.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WING,SPAR..DETERIORATED

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WING,SPAR..SEPARATION

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