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Atlas / NTSB / CHI73FEE50

NTSB CAROL · Event

Event CHI73FEE50

1973-04-08 NAPERVILLE, Illinois, United States Serious 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

VOLKSPLANE 473 · N6552

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Takeoff — initial climb (C1)

Operator type

D

Kind of flying

B0

Weather at impact

Sky

UNKNOWN/NOT REPORTED

Wind

040° / 15 kt

Aircraft history

Serial number

000000000656

Total time

13 hrs

Pilot

Certificate

Commercial — instrument

Total hours

2,770

Age

42

Probable cause (from PRE1982.MDB)

AG MALFUNCTION.UN GAIN OVR 200FT ALT LNDD ADJ FLD.

Investigator remarks

MAGNETO IMPROPERLY TIMED.PREV LDG FARM FLD DUE M

Cause factors

  • 64/C/01 C
    PILOT IN COMMAND ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT Cause
  • 74/C/BA C
    POWERPLANT MAGNETOS Cause
  • 68/C/D1 C
    PERSONNEL IMPROPER MAINTENANCE (OWNER PERSONNEL) Cause
  • 64/B/35 B
    PILOT IN COMMAND SELECTED UNSUITABLE TERRAIN
  • 83/K/F K
    TERRAIN ROUGH/UNEVEN Joint factor
  • 88/K/94 K
    MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE 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 1379. Source file NTSB_1973_3_1379.txt. Modern CAROL record on data.ntsb.gov ↗.