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Atlas / NTSB / CHI76AC074

NTSB CAROL · Event

Event CHI76AC074

1976-06-26 NORTH LIBERTY, Indiana, United States Fatal 1 aircraft Status: Completed

Aircraft involved

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

COMMONWLTH 185 · N92991

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Takeoff — initial climb (C1)

Operator type

D

Airport

LAMBERT FIELD

Kind of flying

B0

Weather at impact

Sky

CLEAR

Temp

85° F

Aircraft history

Serial number

000000001725

Total time

878 hrs

Pilot

Certificate

Commercial — instrument

Total hours

606

Age

50

Probable cause (from PRE1982.MDB)

TO HVY INTENSITY WHEN TEMP ABV 80 DEG.

Investigator remarks

OTR PLTS EXPERIENCED TURB OVR WOODED AREA FM LT

Cause factors

  • 64/A/16 A
    PILOT IN COMMAND FAILED TO OBTAIN/MAINTAIN FLYING SPEED Cause — pilot/personnel action
  • 64/J/29 J
    PILOT IN COMMAND INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING Joint cause
  • 83/J/I J
    TERRAIN HIGH OBSTRUCTIONS Joint cause
  • 82/J/M J
    WEATHER DOWNDRAFT,UPDRAFTS Joint cause

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 1955. Source file NTSB_1976_3_1955.txt. Modern CAROL record on data.ntsb.gov ↗.