NTSB CAROL · Event
Event SEA74DYE20
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 47F-2 · N5161B
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
D4
Operator type
Business
Kind of flying
B3
Weather at impact
Sky
UNKNOWN/NOT REPORTED
Wind
225° / 4 kt
Temp
55° F
Aircraft history
Serial number
000000001979
Total time
4,836 hrs
Pilot
Certificate
Commercial
Total hours
5,407
Age
45
Probable cause (from PRE1982.MDB)
YSTEM WOULDNT ENGAGE. STUMP COVERED AREA.
Investigator remarks
CLUTCH SHOES,PN 47-G20-609-05 WERE GLAZED. M/R S
Cause factors
- 78/C/BJ C ROTORCRAFT CLUTCH ASSEMBLY Cause
- 88/C/98 C MISCELLANEOUS ACTS,CONDITIONS IMPROPER CLEARANCE-TOLERANCE Cause
- 83/B/F B TERRAIN ROUGH/UNEVEN
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 3177.
Source file
NTSB_1973_3_3177.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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