Atlas / NTSB / OAK76DXQ55

NTSB CAROL · Event

Event OAK76DXQ55

1976-07-05 YERINGTON, Nevada, United States None 1 aircraft Status: Completed

Aircraft involved

N9479R Snow 600S2C None

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

SNOW 600S2C · N9479R

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

DJ

Operator type

Part 135 (air taxi/commuter)

Kind of flying

CA

Weather at impact

Sky

CLEAR

Temp

60° F

Aircraft history

Serial number

00000001118C

Total time

1,786 hrs

Pilot

Certificate

Commercial

Age

31

Probable cause (from PRE1982.MDB)

VOID DITCH. SPRAYING ALFALFA.

Investigator remarks

NR 4 CYL HEAD ROCKER ARM BOSS FAILED. TRIED TO A

Cause factors

74/C/AD C
POWERPLANT CYLINDER ASSEMBLY Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
88/B/DF B
MISCELLANEOUS ACTS,CONDITIONS INTENTIONAL GROUND-WATER-LOOP-SWERVE
83/K/F K
TERRAIN ROUGH/UNEVEN Joint factor
88/K/94 K
MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE Joint factor

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 1597. Source file NTSB_1976_3_1597.txt. Modern CAROL record on data.ntsb.gov ↗.

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