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Atlas / NTSB / CHI76FEE52

NTSB CAROL · Event

Event CHI76FEE52

1976-04-18 CHICAGO, Illinois, United States Minor 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

AERO COMDR 685 · N57069

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Cruise — descent (EF)

Operator type

D

Airport

MIDWAY

Kind of flying

B0

Weather at impact

Sky

UNKNOWN/NOT REPORTED

Wind

240° / 6 kt

Aircraft history

Serial number

000000012062

Total time

534 hrs

Pilot

Certificate

GA (GA)

Total hours

2,703

Age

49

Probable cause (from PRE1982.MDB)

R DISTURBANCES IN TUBING. LOSS OF BRAKES & FLAPS.

Investigator remarks

FATIGUE INITIATED BY POINTS OF INC DIA & INTERIO

Cause factors

  • 68/A/J0 A
    PERSONNEL SUBSTANDARD QUALITY CONTROL Cause — pilot/personnel action
  • 75/A/BD A
    SYSTEMS RESERVOIR,LINES,FITTINGS Cause — pilot/personnel action
  • 88/A/36 A
    MISCELLANEOUS ACTS,CONDITIONS FATIGUE FRACTURE Cause — pilot/personnel action
  • 88/A/38 A
    MISCELLANEOUS ACTS,CONDITIONS HYDRAULIC FAILURE Cause — pilot/personnel action

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 2685. Source file NTSB_1976_3_2685.txt. Modern CAROL record on data.ntsb.gov ↗.