Atlas / NTSB / LAX68A0067

NTSB CAROL · Event

Event LAX68A0067

1968-01-15 CUCAMONGA, California, United States Serious 1 aircraft Status: Completed

Registry · N90483

FAA Aircraft Registry record.

Make / Model

HILLER UH-12L4

Year of manufacture

1966 · 2 years old at event

TCDS

H1WE · SIAM HILLER HOLDINGS INC

Engine

LYCOMING VO-540 SERIES (310 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19660124

ADS-B equipped

Yes — Mode-S AC8194

Registrant of record

HAYES JACK D

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N90483 Hiller UH12L4 Serious

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

HILLER UH12L4 · N90483

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Takeoff — initial climb (C1)

Operator type

E

Airport

ONTARIO INTL

Kind of flying

CI

Weather at impact

Sky

CLEAR

Temp

68° F

Aircraft history

Total time

644 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

2,364

Age

37

Probable cause (from PRE1982.MDB)

SHOES.

Investigator remarks

CLUTCH SLIPPAGE DUE TO WORN AND GLAZED FRICTION

Cause factors

78/C/BJ C
ROTORCRAFT CLUTCH ASSEMBLY 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 0539. Source file NTSB_1968_3_0539.txt. Modern CAROL record on data.ntsb.gov ↗.

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