NTSB CAROL · Event
Event DEN74DTE43
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 47G-5 · N2991W
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
EI
Operator type
Part 121 (air carrier)
Kind of flying
A0
Weather at impact
Sky
CLEAR
Wind
180° / 10 kt
Temp
40° F
Aircraft history
Serial number
000000025068
Total time
934 hrs
Pilot
Certificate
Flight instructor (CFI)
Total hours
1,648
Age
26
Probable cause (from PRE1982.MDB)
O AUTOROTATION.
Investigator remarks
ACCIDENT SITE SNOW COVERED.HIT TAIL FIRST ON DEM
Cause factors
- 64/A/49 A PILOT IN COMMAND MISJUDGED SPEED AND ALTITUDE Cause — pilot/personnel action
- 64/A/23 A PILOT IN COMMAND IMPROPER OPERATION OF FLIGHT CONTROLS Cause — pilot/personnel action
- 83/J/B J TERRAIN SNOW-COVERED 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 0060.
Source file
NTSB_1974_3_0060.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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