NTSB CAROL · Event
Event CHI76FEE16
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
GRUM AMER G-164A · N8792H
Damage
Substantial
Craft type
Airplane
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
DC
Operator type
Part 135 (air taxi/commuter)
Airport
AHRENS FARM
Kind of flying
DB
Weather at impact
Sky
OVERCAST
Aircraft history
Serial number
000000001530
Total time
15 hrs
Pilot
Certificate
Commercial
Total hours
4,000
Age
37
Probable cause (from PRE1982.MDB)
HRU BEARING.MFG SVC BULLETIN CVRS.
Investigator remarks
OIL SUPPLY HOLE FOR BEARING FLANGE NOT DRILLED T
Cause factors
- 68/C/D0 C PERSONNEL IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL) Cause
- 74/C/AG C POWERPLANT BLOWER,IMPELLER ASSEMBLY Cause
- 88/C/CB C MISCELLANEOUS ACTS,CONDITIONS IMPROPERLY INSTALLED Cause
- 88/C/80 C MISCELLANEOUS ACTS,CONDITIONS LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM Cause
- 83/B/A B TERRAIN WET,SOFT GROUND
- 88/K/DC K MISCELLANEOUS ACTS,CONDITIONS LOAD NOT JETTISONED Joint factor
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 4143.
Source file
NTSB_1975_3_4143.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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