Atlas / NTSB / MIA71FLA09

NTSB CAROL · Event

Event MIA71FLA09

1970-08-14 PANAMA CITY, Florida, United States None 1 aircraft Status: Completed

Registry · N5185B

FAA Aircraft Registry record.

Make / Model

HUGHES OH-6

TCDS

H3WE · MD HELICOPTERS INC (MDHI)

Seats / Engines

4 seats · 1 engine

ADS-B equipped

Yes — Mode-S A68230

Registrant of record

USDA APHIS WS ATOC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N5185B Bell 47G-2 None

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

BELL 47G-2 · N5185B

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Takeoff — initial climb (C1)

Operator type

Personal/private

Kind of flying

CY

Weather at impact

Sky

CLEAR

Wind

190° / 10 kt

Aircraft history

Serial number

000000001540

Total time

3,828 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

15,000

Age

54

Probable cause (from PRE1982.MDB)

AD 30 MORE HRS OPN PER AD70-14-2.DITCHED IN GULF.

Investigator remarks

T/R BLADE RETAINING BOLT,PN47-461-052-3,FAILED.H

Cause factors

78/C/AB C
ROTORCRAFT TAIL ROTOR BLADES Cause
88/C/36 C
MISCELLANEOUS ACTS,CONDITIONS FATIGUE FRACTURE Cause
88/L/49 L
MISCELLANEOUS ACTS,CONDITIONS SEPARATION IN FLIGHT
88/L/88 L
MISCELLANEOUS ACTS,CONDITIONS AIRCRAFT CAME TO REST IN WATER

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 3191. Source file NTSB_1970_3_3191.txt. Modern CAROL record on data.ntsb.gov ↗.

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