NTSB CAROL · Event
Event SEA77DYM34
Aircraft involved
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-12C · N8108H
Damage
Destroyed
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
Cruise climb (DB)
Operator type
Personal/private
Kind of flying
B0
Weather at impact
Sky
CLEAR
Temp
60° F
Aircraft history
Serial number
000000000108
Total time
1,322 hrs
Pilot
Certificate
Commercial
Total hours
286
Age
29
Probable cause (from PRE1982.MDB)
SION WIRE,FELL INTO RIVER.
Investigator remarks
FLYING UPRIVER 40-50FT AGL.STRUCK ELECT TRANSMIS
Cause factors
- 64/A/15 A PILOT IN COMMAND FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS Cause — pilot/personnel action
- 88/J/14 J MISCELLANEOUS ACTS,CONDITIONS UNWARRANTED LOW FLYING Joint cause
- 83/J/I J TERRAIN HIGH OBSTRUCTIONS Joint cause
- 88/J/88 J MISCELLANEOUS ACTS,CONDITIONS AIRCRAFT CAME TO REST IN WATER Joint 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 1443.
Source file
NTSB_1977_3_1443.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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