Atlas / NTSB / OAK73DVG28

NTSB CAROL · Event

Event OAK73DVG28

1972-10-09 SAN ANDREAS, California, United States None 1 aircraft Status: Completed

Registry · N90487

FAA Aircraft Registry record.

Make / Model

HILLER UH-12L4

Year of manufacture

1966 · 6 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

19660216

ADS-B equipped

Yes — Mode-S AC8198

Registrant of record

HILLER AIRCRAFT CORP

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N90487 Hiller UH12L4 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

HILLER UH12L4 · N90487

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

B8

Operator type

E

Airport

CALAVERAS COUNTY

Kind of flying

CI

Weather at impact

Sky

UNKNOWN/NOT REPORTED

Aircraft history

Serial number

000000002533

Total time

666 hrs

Pilot

Certificate

Commercial

Total hours

3,800

Age

29

Investigator remarks

HIT STEEL SUPPORT BEAM

Cause factors

64/A/15 A
PILOT IN COMMAND FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS 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 2897. Source file NTSB_1972_3_2897.txt. Modern CAROL record on data.ntsb.gov ↗.

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