Atlas / NTSB / SEA75DYC42

NTSB CAROL · Event

Event SEA75DYC42

1975-06-14 MANZANITA, Oregon, United States None 1 aircraft Status: Completed

Aircraft involved

N17714 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 · N17714

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D4

Operator type

Public use

Kind of flying

CS

Weather at impact

Sky

CLEAR

Temp

65° F

Aircraft history

Serial number

000000001010

Total time

4,610 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

2,510

Age

27

Probable cause (from PRE1982.MDB)

ECT TRIM CB POPPED.EMERG LDG,KEEL HIT 12INCH STUMP

Investigator remarks

EXT LOAD LOGGING OPN.VIOLENT SHAKING IN HOVER,EL

Cause factors

84/C/I C
MISCELLANEOUS UNDETERMINED Cause
83/K/E K
TERRAIN HIDDEN OBSTRUCTIONS Joint factor
64/L/31 L
PILOT IN COMMAND LACK OF FAMILIARITY WITH AIRCRAFT
88/L/CV L
MISCELLANEOUS ACTS,CONDITIONS VIBRATION,EXCESSIVE
88/L/AL L
MISCELLANEOUS ACTS,CONDITIONS CIRCUIT BREAKER POPPED

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 2612. Source file NTSB_1975_3_2612.txt. Modern CAROL record on data.ntsb.gov ↗.

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