Atlas / NTSB / LAX67F0059

NTSB CAROL · Event

Event LAX67F0059

1966-08-02 VAN NUYS, California, United States None 1 aircraft Status: Completed

Registry · N173K

FAA Aircraft Registry record.

Make / Model

HELIO H-391B

Engine

LYCOMING GO-435 (210 hp)

Seats / Engines

4 seats · 1 engine

ADS-B equipped

Yes — Mode-S A12533

Registrant of record

WIKLE ARTIC C

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N173K Helio H-391B 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

HELIO H-391B · N173K

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

C0

Operator type

D

Airport

VAN NUYS

Kind of flying

A2

Weather at impact

Sky

UNKNOWN/NOT REPORTED

Wind

180° / 3 kt

Temp

75° F

Aircraft history

Total time

887 hrs

Pilot

Certificate

Commercial — instrument

Total hours

61

Age

49

Probable cause (from PRE1982.MDB)

LURE AREA OF FORE AND AFT TRUSS.

Investigator remarks

RIGHT STRUT FAILED, EVIDENCE OF OLD CRACK IN FAI

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 3106. Source file NTSB_1966_3_3106.txt. Modern CAROL record on data.ntsb.gov ↗.

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