NTSB CAROL · Event
Event DEN70A0017
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 · N73287
Damage
Destroyed
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
D5
Operator type
Personal/private
Kind of flying
CK
Weather at impact
Sky
CLEAR
Wind
260° / 15 kt
Temp
50° F
Aircraft history
Serial number
000000002911
Total time
1,862 hrs
Pilot
Certificate
Flight instructor (CFI)
Total hours
3,000
Age
32
Probable cause (from PRE1982.MDB)
EXTERNAL SLING DEVICE HIT T/R.SHORT SHAFT FAILED.
Investigator remarks
DSNDED DOWN MT TOO FAST.CARGO CABLES ATTACHED TO
Cause factors
- 64/C/27 C PILOT IN COMMAND IMPROPER IN-FLIGHT DECISIONS OR PLANNING Cause
- 64/C/50 C PILOT IN COMMAND MISJUDGED SPEED Cause
- 78/C/AB C ROTORCRAFT TAIL ROTOR BLADES Cause
- 78/C/BG C ROTORCRAFT TAIL ROTOR DRIVE SHAFT ASSEMBLY Cause
- 84/C/D C MISCELLANEOUS FOREIGN OBJECT DAMAGE Cause
- 76/C/CD C INSTRUMENTS/EQUIPMENT AND ACCESSORIES PICK-UP EQUIPMENT Cause
- 88/C/94 C MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE 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 2473.
Source file
NTSB_1969_3_2473.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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