NTSB CAROL · Event
Event MKC72DCD40
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
AERO COMDR 500-B · N553HH
Damage
Substantial
Craft type
Airplane
Classification
Accident
Light condition
Dawn
Weather
IMC
Phase of flight
EE
Operator type
Business
Airport
WATERLOO
Kind of flying
B3
Weather at impact
Sky
BROKEN
Wind
150° / 14 kt
Aircraft history
Serial number
0500B-929-11
Total time
3,556 hrs
Pilot
Certificate
GA (GA)
Total hours
12,000
Age
56
Probable cause (from PRE1982.MDB)
FROZEN.NO LUBRICATION WITHOUT DISASSEMBLY OF GR.
Investigator remarks
R GR BEARING BETWEEN UPPER AND LOWER STRUT ASSY
Cause factors
- 70/A/CB A AIRFRAME NORMAL RETRACTION/EXTENSION ASSEMBLY Cause — pilot/personnel action
- 88/A/80 A MISCELLANEOUS ACTS,CONDITIONS LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM Cause — pilot/personnel action
- 88/A/55 A MISCELLANEOUS ACTS,CONDITIONS CORRODED/CORROSION 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
3 4022.
Source file
NTSB_1971_3_4022.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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