NTSB CAROL · Event
Event ANC70FAG17
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
HILLER ACFT UH12E · N5337V
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
D1
Operator type
E
Kind of flying
DD
Weather at impact
Sky
CLEAR
Aircraft history
Serial number
000000002011
Total time
4,264 hrs
Pilot
Certificate
Commercial
Total hours
25,674
Age
45
Probable cause (from PRE1982.MDB)
INED LARGE PIECES OF WOOD SHAVINGS.TRANS FAILED.
Investigator remarks
OIL-OUT FITTING OF 1ST STAGE PLANETARY SYS CONTA
Cause factors
- 78/C/BE C ROTORCRAFT MAIN ROTOR GEAR BOX Cause
- 84/C/G C MISCELLANEOUS FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS Cause
- 88/C/80 C MISCELLANEOUS ACTS,CONDITIONS LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM Cause
- 88/C/CI C MISCELLANEOUS ACTS,CONDITIONS OVERHEATED Cause
- 88/C/95 C MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
- 64/B/49 B PILOT IN COMMAND MISJUDGED SPEED AND ALTITUDE
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 4608.
Source file
NTSB_1970_3_4608.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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