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Atlas / NTSB / UNK64X1471

NTSB CAROL · Event

Event UNK64X1471

1964-04-26 MARLBORO, Massachusetts, United States None 1 aircraft Status: Completed

Aircraft involved

Historical record (pre-1982)

NTSB recorded this accident in the pre-1982 coded-field schema — structured fields rather than free-text narrative. Decoded codes use established NTSB single-letter taxonomies; cause factors remain verbatim pending the Form 6120.4 codebook lookup.

Aircraft

MOONEY MK21 · N6808U

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

C4

Operator type

Business

Airport

MARLBORO

Kind of flying

B2

Pilot

Certificate

C3 (C3)

Total hours

10,000

Age

422

Cause factors

  • 64/A/35 A
    PILOT IN COMMAND SELECTED UNSUITABLE TERRAIN Cause — pilot/personnel action
  • 64/A/24 A
    PILOT IN COMMAND PREMATURE LIFT-OFF Cause — pilot/personnel action
  • 80/J/BK J
    AIRPORTS/AIRWAYS/FACILITIES POORLY MAINTAINED RUNWAY SURFACE Joint cause

Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table). Each row shows the raw triplet, modifier (Cause / Factor / etc.), category, and specific code.

Source: NTSB pre-1982 historical archive. Docket 3 1045. Source file NTSB_1964_3_1045.txt. Modern CAROL record on data.ntsb.gov ↗.