MIA89GA144

NTSB accident investigation · Douglas C-47 · Summerland Key, FL · May 3, 1989

Accident · FatalFinal report
Date
May 2, 1989, 20:30 local (May 3, 1989, 00:30 UTC)
Place
Summerland Key, FL
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N28889Douglas C-47
Weather
Visual (VMC) · Dusk
Status
Completed · report April 24, 1990
Report
Approved by Office Director
FAA report
19890502033199A
Case key
32314

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 failure of the pilot-in-command to assure proper altitude and clearance was maintained above the terrain and trees. The trees and light condition at dusk were contributing factors.

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.

In flight collision with objectManeuvering - aerial application
Light condition - duskFactor
Proper altitude - not maintainedPilot in commandCause
Object - tree(s)Factor
Clearance - not maintainedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The flt (a monroe county mosquito control opn) began at about 1740 EDT to conduct low alt spraying. When it did not return, a search was initiated. At about 0245, the acft was found in a remote area on water key near the town of Summerland Key, FL. Evidence at the acdnt scene suggested the acft struck 40 ft high mangrove trees with the left wing as the plts were making a procedure turn to start another spray run. No preimpact failure or malfunction of the acft or engs was found. There were no known witnesses, but the acdnt was estd to have occurred at about 2030 EDT. Sunset was at 1952 EDT. About 22 mi sw at key west, the 1750 wx was in part: 1500' scat, 10 mi vis, wind from 330 deg at 10 KTS. Aprx 85 mi nne, the wind was from 100 deg at 11 KTS.

Aircraft

Registration
N28889
Reported as
Douglas C-47
Category
Airplane
Serial number
20520
Airframe hours
10,317
Engine
P&W R-1830, 1,200 horsepower, reciprocating
Damage
Destroyed
Flight
Public aircraft · Public use
Registered owner
Monroe Co.Mosquito Ctrol.Dist.
Airworthiness certificate
Standard, Transport
Last inspection
Annual · May 1, 1989 · 3 hours before
Departed
MTH · Marathon, 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
52
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land, Multi-engine sea, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
8,165 total · 1,702 in this make and model · 7,141 as pilot in command · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dusk
Wind
0° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 70 °F
Altimeter
30.00 inHg
Observed at
TMB, 85 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.