Atlas / NTSB / OAK79FVW06

NTSB CAROL · Event

Event OAK79FVW06

1978-12-31 BOULDER CITY, Nevada, United States None 1 aircraft Status: Completed

Aircraft involved

N8523F Bell 47J2A 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 47J2A · N8523F

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

C2

Operator type

E

Kind of flying

DD

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

000000003317

Total time

5,640 hrs

Pilot

Certificate

Commercial

Total hours

2,724

Age

40

Investigator remarks

#3 CYL AND #6 CYL.

Cause factors

74/C/AF C
POWERPLANT VALVE ASSEMBLIES Cause
88/C/CW C
MISCELLANEOUS ACTS,CONDITIONS WARPED Cause
88/C/AN C
MISCELLANEOUS ACTS,CONDITIONS LOW COMPRESSION Cause
83/K/F K
TERRAIN ROUGH/UNEVEN 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 3433. Source file NTSB_1978_3_3433.txt. Modern CAROL record on data.ntsb.gov ↗.

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