NTSB CAROL · Event
Event DEN77FTE47
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 47G3B1 · N1301X
Damage
Destroyed
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
DC
Operator type
E
Kind of flying
CK
Weather at impact
Sky
CLEAR
Aircraft history
Serial number
000000006535
Total time
3,743 hrs
Pilot
Certificate
Flight instructor (CFI)
Total hours
4,710
Age
26
Probable cause (from PRE1982.MDB)
AROUND TRANSMISSION,ROTOR MAST,HUB.
Investigator remarks
STRINGING HIGHLINE CABLE.LEAD ROPE BROKE,WRAPPED
Cause factors
- 78/A/C0 A ROTORCRAFT CYCLIC PITCH CONTROL SYSTEM Cause — pilot/personnel action
- 78/A/C1 A ROTORCRAFT COLLECTIVE PITCH CONTROL SYSTEM Cause — pilot/personnel action
- 88/A/77 A MISCELLANEOUS ACTS,CONDITIONS INTERFERENCE WITH FLIGHT CONTROLS 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 1057.
Source file
NTSB_1977_3_1057.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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