LAX05CA302

NTSB accident investigation · Cessna 172S · Show Low, AZ · September 18, 2005

Accident · No injuriesData collectionFinal report
Date
September 18, 2005, 10:00 local (17:00 UTC)
Place
Show Low, AZ
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N121CWCessna 172S
Weather
Visual (VMC) · Day
Status
Completed · report January 31, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20050918031429A
Case key
62512

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 selection of a downwind runway for landing and his inadequate compensation for the strong and gusty quartering tail wind conditions, which resulted in a tail strike during landing.

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.

Dragged wing,rotor,pod,float or tail/skidLanding - flare/touchdown
Weather condition - tailwindFactor
Weather condition - gustsFactor
Wrong runway - selectedPilot in commandCause
Weather condition - crosswindFactor
Compensation for wind conditions - inadequatePilot in commandCause

Analysis

During landing, the airplane's tail impacted the ground and resulted in substantial damage to the base of the rudder and the right elevator. The pilot obtained the weather information from an airport located about 12 nautical miles southeast of the accident airport. The winds were reported from 130 degrees at 15 knots, gusting to 18 knots. After an attempted landing for runway 03, the pilot performed a go-around and entered the landing pattern for runway 06. The pilot said he thought the windsock indicated favorable winds for landing runway 06. The approach to land was normal and the pilot flared the airplane, touching down on the right main gear first, and then the airplane bounced. The pilot said the airplane was suddenly pushed aside, to the north end of the runway and the tail section impacted the ground. The airplane settled to the ground momentarily before the pilot was able to perform the go-around and land uneventfully on runway 24. Post accident examination revealed that the right elevator was jammed. No mechanical malfunctions were noted with the airplane prior to the accident. An automated weather observation system (AWOS) for Show Low reported the following weather information 10 minutes following the accident: wind from 230 degrees at 20 knots, gusting to 26 knots. Ten minutes prior to the accident, the winds were reported from 200 degrees at 18 knots, gusting to 22 knots.

Factual narrative

On September 18, 2005, at 1000 mountain standard time, a Cessna 172S, N121CW, sustained a tail strike at the Show Low Regional Airport, Show Low, Arizona. Westwind Aviation was operating the airplane that was registered to a private company under the provisions of 14 CFR Part 91. The private pilot and two passengers were not injured; the airplane sustained substantial damage. Visual meteorological conditions prevailed and a visual flight rules (VFR) flight plan was filed. The pilot departed from Deer Valley Airport, Phoenix, Arizona, at 0900.

The pilot reported that the en route portion of the flight to Show Low was uneventful. He obtained the weather information for Taylor Airport, Taylor, Arizona, located about 12 nautical miles southeast of the accident airport. The winds were reported from 130 degrees at 15 knots, gusting to 18 knots. After an attempted landing for runway 03, the pilot performed a go-around and entered the landing pattern for runway 06. The windsock indicated favorable winds for landing runway 06. The approach to land was normal and the pilot flared the airplane, touching down on the right main gear first, and then the airplane bounced. The airplane, "was suddenly pushed aside, to the north end of the runway" and the tail section impacted the ground. The airplane settled to the ground momentarily before the pilot was able to perform the go-around and land uneventfully on runway 24. Post accident examination revealed that the right elevator was jammed and the skin at the base of the rudder was punctured. No mechanical malfunctions were noted with the airplane prior to the accident.

An automated weather observation system (AWOS) for Show Low reported the following weather information 10 minutes following the accident: wind from 230 degrees at 20 knots, gusting to 26 knots. Ten minutes prior to the accident, the winds were reported from 200 degrees at 18 knots, gusting to 22 knots.

It was noted during the course of the investigation that the current sectional aeronautical chart for Phoenix did not show an AWOS frequency for Show Low. The Airport Facility Directory (AFD), Southwest, currently shows an AWOS frequency of 118.075. The sectional charts are reissued every 6 months; the AFDs are updated every 56 days.

Aircraft

Registration
N121CW
Reported as
Cessna 172S
Category
Airplane
Serial number
172S8975
Engine
Lycoming IO-360-L2A, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Westwind Aviation
Registered owner
Crossways, LLC
Airworthiness certificate
Standard, Normal
Departed
DVT · Phoenix, AZ
Destination
SOW · Show Low, AZ
Flight plan
VFR
Airport
SOW · Show Low, runway 060, 7,200 × 100 ft, asphalt

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
17
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 1
Flight hours
67 total · 67 in this make and model · 4 in the last 90 days · 1 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 20 knots, gusting 26
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 27 °F
Altimeter
30.22 inHg
Observed at
SOW

FAA reports on this event · 1

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

Other investigations on N121CW · 2

Matched to the same aircraft by N-number and date.