CHI98LA005

NTSB accident investigation · Cessna 172N · Sandwich, IL · October 5, 1997

Accident · No injuriesLimited investigationFinal report
Date
October 5, 1997, 15:30 local (20:30 UTC)
Place
Sandwich, IL
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N73899Cessna 172N
Weather
Visual (VMC) · Day
Status
Completed · report January 7, 1998
Report
Approved by Office Director
FAA report
19971005030049A
Case key
10757

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 inability to maintain flying airspeed resulting in an inadvertent stall/mush. A factor contributing to this accident was the wind gust.

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 control - in flightLanding - flare/touchdown
Weather condition - gustsFactor
In flight collision with terrain/waterDescent - uncontrolled
Airspeed(vso) - not maintainedPilot in commandCause
Stall/mush - inadvertentPilot in commandCause
Nose overDescent - uncontrolled

Analysis

In an interview, the pilot stated that he obtained weather information from a television broadcast prior to his planned local flight. The winds were reported out of the south at 30 knots with gusts. The pilot said that while taxiing to the north/south grass runway the winds were strong, and immediately after the southbound takeoff it became 'gusty.' He opted to stay in the traffic pattern and re-land. The pilot recalled that while on final the flaps were extended 'one notch,' and the indicated airspeed was 65 knots. After reducing the power to idle just prior to the flare, the pilot stated that the airplane encountered a wind shear. He said a gust pitched the airplane up, then the wind abruptly stopped, causing the airplane to pitch nose down and collide with the runway. The nose gear separated from the airframe and the airplane nosed over, coming to rest inverted. In an interview, the right seat passenger said that the approach seemed normal. The airplane leveled off over the runway, then floated for a little bit. He said the airplane then quickly nosed up then 'banged down.' He recalls the flaps extended 'one notch' prior to impact. Neither the pilot nor the passenger remembers hearing a stall warning.

Factual narrative

On October 5, 1997, at 1530 central daylight time, a Cessna 172N, N73899, operated by a private pilot was substantially damaged when it collided with the runway during landing at the Woodlake Landing Airport, near Sandwich, Illinois. The pilot and two passengers reported no injuries. Visual meteorological conditions prevailed at the time of the accident. The personal flight was conducted under 14 CFR Part 91 and no flight plan was on file. The flight originated from the Woodlake Landing Airport at 1500 CDT for a local flight.

In an interview, the pilot stated that he obtained weather information from a television broadcast prior to his planned local flight. The winds were reported out of the south at 30 knots with gusts. The pilot said that while taxiing to the north/south grass runway the winds were strong, and immediately after the southbound takeoff it became "gusty." He opted to stay in the traffic pattern and re-land. The pilot recalled that while on final the flaps were extended "one notch," and the indicated airspeed was 65 knots. After reducing the power to idle just prior to the flare, the pilot stated that the airplane encountered a wind shear. He said a gust pitched the airplane up, then the wind abruptly stopped, causing the airplane to pitch nose down and collide with the runway. The nose gear separated from the airframe and the airplane nosed over, coming to rest inverted. In an interview, the right seat passenger said that the approach seemed normal. The airplane leveled off over the runway, then floated for a little bit. He said the airplane then quickly nosed up then "banged down." He recalls the flaps extended "one notch" prior to impact. Neither the pilot nor the passenger remembers hearing a stall warning.

The Federal Aviation Administration (FAA) and the National Transportation Safety Board (NTSB) conducted an examination of the wreckage. Both the upper and lower engine cowls had separated from their respective attachment points around the firewall. The engine was hanging downward and to the right. The upper engine mounts were bent and broken. One of the propeller blades showed evidence of torsional bending. The nose gear assembly was broken free of the airframe, and the nose wheel was separated from the strut. The upper portions of both the vertical stabilizer and the rudder were wrinkled and crushed. The left wing tip was damaged after the accident while the airplane was being moved.

Aircraft

Registration
N73899
Reported as
Cessna 172N
Category
Airplane
Serial number
17267736
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Robert G. Svatos
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 1997 · 5 hours before
Departed
C48
Destination
C48
Airport
C48 · Woodlake Landing, runway 18, 1,750 × 150 ft, grass/turf

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
70
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Expired
Seat
Left
Flight hours
3,000 total · 300 in this make and model · 3 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 20 knots, gusting 30
Visibility
15 statute miles
Lowest ceiling
None
Temperature
86 °F, dew point 54 °F
Altimeter
29.00 inHg
Observed at
ARR, 12 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.