FTW89LA131

NTSB accident investigation · Cessna 172K · Blanco, TX · July 9, 1989

Accident · Minor injuriesLimited investigationFinal report
Date
July 9, 1989, 14:25 local (19:25 UTC)
Place
Blanco, TX
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N758ANCessna 172K
Weather
Visual (VMC) · Day
Status
Completed · report August 22, 1990
Report
Approved by Office Director
FAA report
19890709021149A
Case key
22895

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

Inadequate in-flight planning/decisions by not identifying the wind direction along with the failure to maintain airspeed. Contributing to the accident was the tailwind, wires and trees.

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 objectGo-around (vfr)
Weather condition - tailwindFactor
In-flight planning/decision - inadequatePilot in commandCause
Wind information - not identifiedPilot in commandFactor
Airspeed - inadequatePilot in commandCause
Stall/mush - inadvertentPilot in commandCause
Object - wire,staticFactor
Object - tree(s)Factor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The private pilot and the commercial rated instructor pilot were practicing landings and had just completed a go-around and according to the instructor, they encountered a windshear of minus 15 knots and struck a telephone line, trees and then the terrain. They were making landings on rwy 30 and the reported prevailing winds in the area were from the south. According to the sequences from the weather reporting stations in the area, there were no weather systems that would likely cause vertical windshear.

Aircraft

Registration
N758AN
Reported as
Cessna 172K
Category
Airplane
Serial number
1722943
Airframe hours
833
Engine
Continental IO-360-K, 195 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Duggan, Charles M.
Registered owner
Duggan, Charles M
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 12, 1988 · 13 hours before
Departed
3R5 · New Braunfels, TX
Airport
NONE, runway 30, 2,600 × 125 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
58
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
673 total · 671 in this make and model · 433 as pilot in command · 13 in the last 90 days · 6 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 5 knots, gusting 15
Visibility
20 statute miles
Lowest ceiling
None
Temperature
91 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.