MIA91FA057

NTSB accident investigation · Mooney M20C · Pensacola, FL · December 28, 1990

Accident · FatalField investigationFinal report
Date
December 28, 1990, 17:39 local (23:39 UTC)
Place
Pensacola, FL
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Approach
Aircraft
N6600UMooney M20C
Weather
Instrument (IMC) · Night/dark
Status
Completed · report June 8, 1993
Report
Approved by Office Director
FAA report
19901228056399A
Case key
32740

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

The pilot's failure to use carburetor heat resulting in loss of engine power due to carburetor ice. A factor in the accident was the pilot's medical condition.

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(total) - nonmechanicalApproach - faf/outer marker to threshold (ifr)
Fuel system,carburetor - iceCause
Carburetor heat - not usedPilot in commandCause
Physical impairment(organic problem)Pilot in commandFactor
Forced landingApproach - faf/outer marker to threshold (ifr)
In flight collision with objectApproach - faf/outer marker to threshold (ifr)
Object - tree(s)
In flight collision with terrain/waterApproach - faf/outer marker to threshold (ifr)

Analysis

Flt was clrd for ILS apch. About 10 mi from rwy plt reported his glideslope was not working. Flt was then cleared for asr radar apch. At 1.5 miles from rwy flt was lost from radar. Witnesses reported acft flew overhead at tree top level without the eng running. Acft hit trees and then crashed into gnd inverted. Propeller had no rotation damage. No evidence to indicate precrash malfunction of engine was noted. The mixture control was in the cruise lean position and the carburetor heat was in the cold position. No inst apch plates were found open in the cockpit. The flt was operating in conditions which would cause visible carb ice at cruise power and serious carb ice at glide power. Post mortem examination of the plt indicated he suffered from mild cerebral atrophy and hypertensive arteriosclerotic heart disease. The plt was prescribed hypertensive medication but was not taking it at the time of the accident.

Aircraft

Registration
N6600U
Reported as
Mooney M20C
Category
Airplane
Serial number
2387
Airframe hours
2,252
Engine
Lycoming O-360-A10, 180 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Cox, Fritz L.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 17, 1990 · 21 hours before
Departed
UBS · Columbus, MS
Flight plan
VFR
Airport
Pensacola Regional, runway 16, 7,002 × 150 ft, asphalt

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
71
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
2,700 total · 1,800 in this make and model · 2,300 as pilot in command · 10 in the last 90 days · 10 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
100° at 6 knots
Lowest ceiling
200 ft overcast
Temperature
63 °F, dew point 63 °F
Altimeter
30.00 inHg
Observed at
PNS, 2 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 N6600U · 1

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