Atlas / NTSB / SEA74DYE25

NTSB CAROL · Event

Event SEA74DYE25

1973-11-01 FORKS, Washington, United States None 1 aircraft Status: Completed

Aircraft involved

N73918 Bell 47G-3B 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 47G-3B · N73918

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D4

Operator type

Public use

Airport

FORKS

Kind of flying

CK

Weather at impact

Sky

SCATTERED-ABOVE 1000 FEET

Wind

360° / 10 kt

Temp

55° F

Aircraft history

Serial number

000000002806

Total time

3,765 hrs

Pilot

Certificate

DA (DA)

Total hours

5,426

Age

45

Probable cause (from PRE1982.MDB)

NIT. LND STUMP COVERED TERRAIN.

Investigator remarks

COOLING SYS FAN BELT FAILED,DMG CYCLIC HYD CTL U

Cause factors

74/C/E9 C
POWERPLANT OTHER Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
64/B/35 B
PILOT IN COMMAND SELECTED UNSUITABLE TERRAIN
83/K/Y K
TERRAIN OTHER Joint factor
78/L/C0 L
ROTORCRAFT CYCLIC PITCH CONTROL SYSTEM
88/L/BR L
MISCELLANEOUS ACTS,CONDITIONS ERRATIC

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 3597. Source file NTSB_1973_3_3597.txt. Modern CAROL record on data.ntsb.gov ↗.

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