NTSB CAROL · Event
Event OAK72FVM18
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
DEHAVILLAND DH104 · N6307T
Damage
Substantial
Craft type
Airplane
Classification
Accident
Light condition
Dusk
Weather
VMC
Phase of flight
Cruise — descent (EF)
Operator type
E
Airport
SAN CARLOS
Kind of flying
CJ
Weather at impact
Sky
SCATTERED-ABOVE 1000 FEET
Aircraft history
Serial number
000000004281
Total time
6,718 hrs
Pilot
Certificate
GA (GA)
Total hours
5,270
Age
37
Probable cause (from PRE1982.MDB)
HYD ACTUATING CYL. GR IND SHOWED 3 GREEN.
Investigator remarks
L GR DOWN LOCK LIMIT SWITCH BOX CAME LOOSE.DMGD
Cause factors
- 70/A/CB A AIRFRAME NORMAL RETRACTION/EXTENSION ASSEMBLY Cause — pilot/personnel action
- 88/A/95 A MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause — pilot/personnel action
- 88/J/AH J MISCELLANEOUS ACTS,CONDITIONS PREVIOUS DAMAGE 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 3728.
Source file
NTSB_1971_3_3728.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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