Atlas / NTSB / SEA70DWA06

NTSB CAROL · Event

Event SEA70DWA06

1970-03-09 BEAVERTON, Oregon, United States None 1 aircraft Status: Completed

Aircraft involved

N750FH HILLER ACFT FH1100 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 FH1100 · N750FH

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

D

Kind of flying

B0

Weather at impact

Sky

CLEAR

Wind

090° / 10 kt

Aircraft history

Serial number

000000000050

Total time

412 hrs

Pilot

Certificate

Commercial — instrument

Total hours

592

Age

54

Probable cause (from PRE1982.MDB)

BROKE LOOSE FAILED 6TH STAGE BLADES AND STATORS.

Investigator remarks

PLASTIC COATING ON 5TH STAGE COMPRESSOR SECTION

Cause factors

74/C/MY C
POWERPLANT OTHER Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
64/B/23 B
PILOT IN COMMAND IMPROPER OPERATION OF FLIGHT CONTROLS

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 0769. Source file NTSB_1970_3_0769.txt. Modern CAROL record on data.ntsb.gov ↗.

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