MIA91LA072

NTSB accident investigation · Cessna 170A · Fort Myers, FL · January 24, 1991

Accident · Minor injuriesLimited investigationFinal report
Date
January 24, 1991, 09:30 local (14:30 UTC)
Place
Fort Myers, FL
Injuries
3 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N1279DCessna 170A
Weather
Visual (VMC) · Day
Status
Completed · report January 25, 1993
Report
Approved by Office Director
FAA report
19910124001029A
Case key
32816

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

In-flight encounter with a downdraft which caused the airspeed to decrease below vso resulting in an inadvertent stall/mush.

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 encounter with weatherTakeoff - initial climb
Weather condition - downdraft
Airspeed - reduced
Stall/mush - inadvertentPilot in commandCause
Loss of control - in flightTakeoff - initial climb
Object - tree(s)
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

Shortly after takeoff at an alt of about 80 ft while over trees at the departure end of the rwy, the plt reported that the acft began to sink & the lt wing stalled. The acft descended lt wing low collided with trees then the ground. The plt stated that there was no eng failure or malfunction & the stall warning did not operate. He also stated that the high sink rate was due to a downdraft. The plt rated passenger stated that just prior to the wing stalling, he observed the airspeed indicator abruptly fell from 60-50 mph. The stall speed in the acft configuration was reportedly 54 mph.

Aircraft

Registration
N1279D
Reported as
Cessna 170A
Category
Airplane
Serial number
20125
Airframe hours
3,932
Engine
Continental O-300A, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Caine, Alfred
Registered owner
Caine, Alfred
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 1, 1990 · 72 hours before
Destination
X14 · La Belle, FL
Airport
NONE · Tuckers Corner, runway 5, 1,850 × 75 ft, grass/turf

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
37
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
233 total · 25 in this make and model · 105 as pilot in command · 49 in the last 90 days · 21 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
140° at 11 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 61 °F
Altimeter
30.00 inHg
Observed at
FMY, 13 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.