NTSB CAROL · Event
Event DEN77FA046
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
PIPER PA-22 · N3715A
Damage
Destroyed
Craft type
Airplane
Classification
Accident
Light condition
E
Weather
VMC
Phase of flight
D0
Operator type
D
Airport
ARAPAHOE COUNTY
Kind of flying
B0
Weather at impact
Sky
BROKEN
Wind
150° / 12 kt
Temp
86° F
Aircraft history
Serial number
0000022-1955
Pilot
Certificate
Commercial — instrument
Total hours
800
Age
43
Probable cause (from PRE1982.MDB)
AIN BEARINGS WORN,SCORED.
Investigator remarks
#4 INTAKE VALVE LOBE WORN.TAPPET BODIES GALLED.M
Cause factors
- 64/A/29 A PILOT IN COMMAND INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING Cause — pilot/personnel action
- 64/A/45 A PILOT IN COMMAND MISJUDGED DISTANCE,SPEED,AND ALTITUDE Cause — pilot/personnel action
- 68/J/D6 J PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION Joint cause
- 82/J/W J WEATHER HIGH DENSITY ALTITUDE 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 2764.
Source file
NTSB_1977_3_2764.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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