Atlas / NTSB / SEA80FYM30

NTSB CAROL · Event

Event SEA80FYM30

1980-04-23 SCAPPOOSE, Oregon, United States None 1 aircraft Status: Completed

Aircraft involved

N5589Q HILLER ACFT UH-12D 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 ACFT UH-12D · N5589Q

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

EH

Operator type

Personal/private

Airport

SCAPPOOSE

Kind of flying

DB

Weather at impact

Sky

CLEAR

Wind

180° / 5 kt

Temp

65° F

Aircraft history

Serial number

000000000948

Total time

7,909 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

2,440

Age

35

Investigator remarks

LND NOSE HIGH.NO MALFUNCTION FOUND.

Cause factors

64/C/18 C
PILOT IN COMMAND FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. Cause
64/C/23 C
PILOT IN COMMAND IMPROPER OPERATION OF FLIGHT CONTROLS Cause
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 1730. Source file NTSB_1980_3_1730.txt. Modern CAROL record on data.ntsb.gov ↗.

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