NTSB CAROL · Event
Event LAX72AL018
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 UH12L4 · N90486
Damage
Destroyed
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
Takeoff — initial climb (C1)
Operator type
Personal/private
Airport
GRAND CANYON
Kind of flying
CT
Weather at impact
Sky
CLEAR
Wind
220° / 4 kt
Temp
72° F
Aircraft history
Serial number
000000002532
Total time
4,162 hrs
Pilot
Certificate
Commercial
Total hours
2,140
Age
25
Probable cause (from PRE1982.MDB)
D BROKE OFF,ACFT ROLLED OVER,FIRE BROKE OUT.
Investigator remarks
DSTY ALT 8900,DURG TKOF PLT LOST ROTOR RPM,R SKI
Cause factors
- 64/A/18 A PILOT IN COMMAND FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. Cause — pilot/personnel action
- 82/J/W J WEATHER HIGH DENSITY ALTITUDE 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 3835.
Source file
NTSB_1971_3_3835.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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