MIA90LA115

NTSB accident investigation · Williams, Robert G. AIR COMM. 532 Elite · Indian Rks Bch, FL · May 2, 1990

Accident · No injuriesLimited investigationFinal report
Date
May 2, 1990, 14:00 local (18:00 UTC)
Place
Indian Rks Bch, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N70319Williams, Robert G. AIR COMM. 532 Elite
Weather
Visual (VMC) · Day
Status
Completed · report September 15, 1992
Report
Approved by Office Director
FAA report
19900502013239A
Case key
32652

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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Probable cause

Loss of power due to the overheated engine caused by a separated liquid coolant line which allowed the coolant to drain, resulting in the forced landing.

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 powerCruise - normal
Cooling system,lines - vibrationCause
Aircraft preflight - poorPilot in command
Cooling system,lines - separationCause
Maintenance,inspection - unavailable
Engine assembly - overtemperatureCause
Forced landingDescent - emergency
DitchingDescent - emergency

Analysis

During cruise flt about 500 ft offshore, the plt reported that the eng coolant & oil temperature began rising. He attempted to land on the beach but was unable, & landed just offshore. After touchdown, the main rotor mast separated. Exam of the eng revealed that a liquid coolant line separated from the radiator, due to vibration. This allowed the coolant to drain. According to an FAA inspector, there was no airworthiness certificate nor eng & acft logbooks. The plt held a student plt certificate but it nor his plt logbook was endorsed authorizing solo flt.

Aircraft

Registration
N70319
Reported as
Williams, Robert G. AIR COMM. 532 Elite (AIR COMM.)
Category
Gyroplane, amateur-built
Serial number
0459
Engine
Rotax 532, 64 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Williams, Robert G.
Departed
CLW · Clearwater, FL

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
72
Certificate
Student
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
100 in this make and model · 10 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 10 knots
Visibility
7 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 70 °F
Altimeter
30.00 inHg
Observed at
PIE, 8 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.

Other investigations on N70319 · 1

Matched to the same aircraft by N-number and date.