Atlas / NTSB / CHI71DEE01

NTSB CAROL · Event

Event CHI71DEE01

1971-07-03 JOLIET, Illinois, United States None 1 aircraft Status: Completed

Aircraft involved

N7643R Beech A23-19 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

BEECH A23-19 · N7643R

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Cruise — descent (EF)

Operator type

Personal/private

Airport

JOLIET MUNI

Kind of flying

A0

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

000000MB-435

Total time

1,439 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

791

Age

27

Probable cause (from PRE1982.MDB)

MOUNTING THRU BOLT. ACFT HAD EARLIER HARD LDG.

Investigator remarks

R GR CASTING SEPARATED ABOUT 2 1/2 INCHES BELOW

Cause factors

70/A/CA A
AIRFRAME MAIN GEAR-SHOCK ABSORBING ASSY,STRUTS,ATTACHMENTS,ETC. Cause — pilot/personnel action
88/A/36 A
MISCELLANEOUS ACTS,CONDITIONS FATIGUE FRACTURE Cause — pilot/personnel action
68/A/D6 A
PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION Cause — pilot/personnel action
88/J/AH J
MISCELLANEOUS ACTS,CONDITIONS PREVIOUS DAMAGE 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 2664. Source file NTSB_1971_3_2664.txt. Modern CAROL record on data.ntsb.gov ↗.

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