Atlas / NTSB / SEA77FTI19

NTSB CAROL · Event

Event SEA77FTI19

1977-09-01 MISSOULA, Montana, United States None 1 aircraft Status: Completed

Aircraft involved

N7937J Bell 47G3B2 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

BELL 47G3B2 · N7937J

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D0

Operator type

E

Kind of flying

CI

Weather at impact

Sky

CLEAR

Wind

135° / 4 kt

Temp

40° F

Aircraft history

Serial number

000000006800

Total time

1,731 hrs

Pilot

Certificate

Commercial

Total hours

5,040

Age

49

Investigator remarks

ENG FAIL AT LOW ALT OVER LAKE.

Cause factors

74/C/KA C
POWERPLANT POWERPLANT FAILURE FOR UNDETERMINED REASONS Cause
83/B/Y B
TERRAIN OTHER

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 2795. Source file NTSB_1977_3_2795.txt. Modern CAROL record on data.ntsb.gov ↗.

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