NTSB CAROL · Event
Event MIA77DLA38
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
BELL 47D1 · N3109G
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
EH
Operator type
E
Airport
INTL HELIPORT
Kind of flying
CI
Weather at impact
Sky
SCATTERED-ABOVE 1000 FEET
Temp
90° F
Aircraft history
Serial number
000000000407
Total time
4,570 hrs
Pilot
Certificate
Commercial
Total hours
8,500
Age
56
Cause factors
- 64/A/23 A PILOT IN COMMAND IMPROPER OPERATION OF FLIGHT CONTROLS Cause — pilot/personnel action
- 64/A/18 A PILOT IN COMMAND FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. Cause — pilot/personnel action
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 2390.
Source file
NTSB_1977_3_2390.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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