Atlas / NTSB / DEN77DTC21

NTSB CAROL · Event

Event DEN77DTC21

1977-07-31 WILSON, Wyoming, United States Minor 1 aircraft Status: Completed

Aircraft involved

N6390 AEROSPATIAL SA315B Minor

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

AEROSPATIAL SA315B · N6390

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

E

Kind of flying

CJ

Weather at impact

Sky

CLEAR

Temp

60° F

Aircraft history

Serial number

000000002309

Total time

2,091 hrs

Pilot

Certificate

Commercial

Total hours

5,981

Age

43

Investigator remarks

CAUSE OF BEARING FAILURE NOT DETERMINED.

Cause factors

74/C/MI C
POWERPLANT BEARING,ROTOR SHAFT Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
83/B/D B
TERRAIN HIGH VEGETATION

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 3543. Source file NTSB_1977_3_3543.txt. Modern CAROL record on data.ntsb.gov ↗.

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