CHI96LA256

NTSB accident investigation · Cessna 172M · Backus, MN · July 27, 1996

Accident · Minor injuriesLimited investigationFinal report
Date
July 26, 1996, 22:30 local (Jul 27, 1996, 03:30 UTC)
Place
Backus, MN
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N1620VCessna 172M
Weather
Visual (VMC) · Night/dark
Status
Completed · report September 19, 1996
Report
Approved by Office Director
FAA report
19960727020089A
Case key
10326

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 maintain adequate altitude and his abrupt maneuver to avoid the tree tops. The dark night was a factor.

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 flightGo-around (vfr)
Light condition - nightFactor
Altitude - not maintainedPilot in commandCause
Object - tree(s)
Maneuver to avoid obstructions - abruptPilot in commandCause
Stall/spin - inadvertentPilot in command
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot said that he was above the glidepath on final approach and did not feel comfortable with the situation. He decided to execute a go-around. He advanced the throttle to full power and moved the flap switch up two notches from 40 degrees of flaps to 20 degrees of flaps. 'Everything seemed to be going fine when the next thing I saw was the tree tops.' The pilot 'instinctively pulled back on the yoke' to clear the trees. 'The airplane dipped to the left,' struck the trees and fell to the ground. Examination of the wreckage revealed no anomalies with the airplane.

Factual narrative

On July 26, 1996, at 2230 central daylight time (cdt), a Cessna 172M, N1620V, operated by a private pilot, sustained substantial damage when on climb from a go-around, the airplane departed controlled flight and impacted in an oak tree grove near Backus, Minnesota. Visual Meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under 14 CFR Part 91. No flight plan was on file. The pilot and the passenger on board reported minor injuries. The flight originated at Minneapolis, Minnesota, at 2130 cdt.

In his written statement, the pilot said that he was above the glide path on final approach and did not feel comfortable with the situation. The pilot decided to execute a go around. He advanced the throttle to full power and moved the flap switch up two notches from 40 degrees of flaps to 20 degrees of flaps. "Everything seemed to be going fine when the next thing I saw was the tree tops." The pilot "instinctively pulled back on the yoke" to clear the trees. "The airplane dipped to the left," struck the trees and fell to the ground.

The Federal Aviation Administration (FAA) inspector who examined the wreckage at the site, found the airplane resting on its left side amongst oak trees at an 80-degree angle. The left wing had separated from the airplane. The right wing was bent up and aft. Both left and right fuel tanks were broken open. The smell of fuel was prevalent. The cowling and forward fuselage were bent up and to the right. The nose gear had separated from the firewall. The firewall was buckled. The aft fuselage and tail section showed numerous bends and skin wrinkles. The left main landing gear was broken off. The right main landing gear was undamaged. The engine remained attached to its mounts. Both propeller blades were bent and showed chordwise scratching. Flight control continuity was established. No anomalies were found with the engine, engine controls or other airplane systems.

Aircraft

Registration
N1620V
Reported as
Cessna 172M
Category
Airplane
Serial number
17263685
Airframe hours
5,202
Engine
Lycoming O-320-E2D, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Annies Airplane Company, Inc.
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · July 19, 1996 · 14 hours before
Departed
MIC · Minneapolis, MN
Destination
7Y3
Airport
7Y3 · Backus Municipal, runway 33, 3,588 × 145 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
46
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
178 total · 42 in this make and model · 139 as pilot in command · 50 in the last 90 days · 13 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
130° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 50 °F
Altimeter
30.00 inHg
Observed at
PKD, 23 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.