NTSB CAROL · Event
Event UNK64X2269
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 · N5511V
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
C2
Operator type
D
Kind of flying
CY
Pilot
Certificate
C3 (C3)
Total hours
11,800
Age
288
Probable cause (from PRE1982.MDB)
02 030
Investigator remarks
SIGHTSEEING NEAR GROSS WT TEMP 90 CALM
Cause factors
- 64/A/18 A PILOT IN COMMAND FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. Cause — pilot/personnel action
- 64/A/23 A PILOT IN COMMAND IMPROPER OPERATION OF FLIGHT CONTROLS Cause — pilot/personnel action
- 64/A/21 A PILOT IN COMMAND IMPROPER OPERATION OF POWERPLANT & POWERPLANT 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
2 0300.
Source file
NTSB_1964_2_0300.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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