MIA86LA004

NTSB accident investigation · Bell 206L · Islamorada, FL · October 5, 1985

Accident · No injuriesLimited investigationFinal report
Date
October 5, 1985, 09:20 local (13:20 UTC)
Place
Islamorada, FL
Injuries
6 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N60CBell 206L
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19851005054749A
Case key
31532

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(partial) - mech failure/malfManeuvering
Maintenance,installation - improperCompany maintenance personnelCause
Miscellaneous - fatigueCause
Bleed air system - failure,total
Fuel system,fuel control - failure,partial
Forced landingDescent - uncontrolled
DitchingLanding - flare/touchdown

Analysis

Aircraft was ditched in the atlantic ocean after loss of engine power. Post crash inspection of the engine after recovery from the ocean revealed thje pc or compressor pressure air line had failed at a 'b' nut at the compressor schroll. With this line failed the engine would not operate above idle speed. Metallurgical examination of the failed line revealed it failed due to fatigue which was caused by the line being misaligned during installation.

Aircraft

Registration
N60C
Reported as
Bell 206L
Category
Helicopter
Serial number
45102
Airframe hours
3,571
Engine
Allison 250-C20B, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
Aerial observation · Part 91
Operator
Tropical Helicopter Airways
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 16, 1985 · 91 hours before

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
25
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
2,799 total · 704 in this make and model · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 5 knots
Visibility
8 statute miles
Lowest ceiling
25,000 ft broken
Temperature
84 °F, dew point 77 °F
Altimeter
30.00 inHg
Observed at
EYW, 70 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.