NTSB CAROL · Event
Event MIA80FA069
Registry · N9299Z
FAA Aircraft Registry record.
Make / Model
HILLER UH-12D
TCDS
4H10 · SIAM HILLER HOLDINGS INC
Engine
LYCOMING VO-435 SERIES (260 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19760319
ADS-B equipped
Yes — Mode-S ACE344
Registrant of record
BRYANT JONATHAN E
Source: FAA Aircraft Registry (releasable master file).
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 UH-12D · N9299Z
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
D1
Operator type
E
Airport
CITY OF MIAMI HEL
Kind of flying
CY
Weather at impact
Sky
OVERCAST
Wind
140° / 14 kt
Temp
82° F
Aircraft history
Serial number
000000001150
Total time
8,700 hrs
Pilot
Certificate
Commercial
Total hours
6,300
Age
32
Probable cause (from PRE1982.MDB)
C,MANUF SPECS REQUIRE 60RC.
Investigator remarks
SUN GEAR,P/N 23530-3,TOOTH HARDNESS MEASURED 35R
Cause factors
- 68/A/D6 A PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION Cause — pilot/personnel action
- 78/A/BE A ROTORCRAFT MAIN ROTOR GEAR BOX Cause — pilot/personnel action
- 88/A/95 A MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause — pilot/personnel action
- 88/J/88 J MISCELLANEOUS ACTS,CONDITIONS AIRCRAFT CAME TO REST IN WATER 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 1685.
Source file
NTSB_1980_3_1685.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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