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Atlas / NTSB / UNK64X2796

NTSB CAROL · Event

Event UNK64X2796

1964-07-12 RUBY CREEK, Alaska, 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

PILATUS PC-6A · N1417Z

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Cruise — descent (EF)

Airport

BEAR CREEK

Weather at impact

Sky

CLEAR

Pilot

Certificate

F6 (F6)

Total hours

188,088

Age

422

Cause factors

  • 65/A/22 A
    COPILOT Cause — pilot/personnel action
  • 64/A/30 A
    PILOT IN COMMAND INADEQUATE SUPERVISION OF FLIGHT Cause — pilot/personnel action

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 1 0028. Source file NTSB_1964_1_0028.txt. Modern CAROL record on data.ntsb.gov ↗.