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Atlas / NTSB / OAK76AP017

NTSB CAROL · Event

Event OAK76AP017

1975-10-10 WALNUT GROVE, California, United States Fatal 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

AERO COMDR 500A · N9394R

Damage

Destroyed

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

IMC

Phase of flight

DC

Operator type

D

Kind of flying

B0

Weather at impact

Sky

OVERCAST

Temp

65° F

Aircraft history

Serial number

000000913-21

Total time

3,695 hrs

Pilot

Certificate

Commercial — instrument

Age

41

Probable cause (from PRE1982.MDB)

IN WATER. VFR FLT NOT RECOMMENDED BY FSS.

Investigator remarks

IN FLT STRUCTURAL FAILURE.ACFT CRASHED INVERTED

Cause factors

  • 64/C/04 C
    PILOT IN COMMAND CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS Cause
  • 64/C/66 C
    PILOT IN COMMAND SPATIAL DISORIENTATION Cause
  • 64/C/09 C
    PILOT IN COMMAND EXCEEDED DESIGNED STRESS LIMITS OF AIRCRAFT Cause
  • 88/C/94 C
    MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE Cause
  • 82/L/B L
    WEATHER RAIN
  • 82/L/L L
    WEATHER TURBULENCE, ASSOCIATED W/CLOUDS AND/OR THUNDERSTORMS
  • 88/L/49 L
    MISCELLANEOUS ACTS,CONDITIONS SEPARATION IN FLIGHT

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 4061. Source file NTSB_1975_3_4061.txt. Modern CAROL record on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗