LAX02LA153

NTSB accident investigation · Cessna 172M · Green Valley, AZ · May 8, 2002

Accident · Minor injuriesLimited investigationFinal report
Date
May 8, 2002, 10:30 local (17:30 UTC)
Place
Green Valley, AZ
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N754LTCessna 172M
Weather
Visual (VMC) · Day
Status
Completed · report March 2, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20020508008219A
Case key
54657

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 identify the wind direction, which led to an attempted downwind landing approach that resulted in a hard landing and severe bounce. Also causal was the pilot's failure to promptly retract the flaps during the rejected landing after touchdown, which led to a stall/mush condition during the takeoff initial climb and a resultant collision with terrain. Factors in the accident were the high density altitude and the prevailing tailwind condition.

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.

Hard landingLanding - aborted
Weather condition - tailwindFactor
Wind information - not obtainedPilot in commandCause
Weather condition - high density altitudeFactor
Wrong runway - selectedPilot in commandCause
Proper descent rate - not maintainedPilot in commandCause
Aborted landing - attemptedPilot in command
In flight collision with terrain/waterLanding - aborted
Raising of flaps - not performedPilot in commandCause
Terrain condition - rising
Airspeed - not maintainedPilot in commandCause
Stall/mush - inadvertentPilot in command

Analysis

The airplane impacted terrain next to the runway during an aborted landing. The pilot reported that the airplane lost altitude as the result of a down draft while executing a full stop landing on runway 01. The airplane touched down hard and bounced several times. An aborted landing was attempted, but the pilot did not retract the flaps. The airplane continued flying towards the right side of the runway, and was unable to climb over or turn away from the rising terrain into which it ultimately impacted. Both pilots indicated that prior to impact, the engine sounds were normal. Control continuity was established and no mechanical anomalies were found. The density altitude was 5,500 feet msl. Responding officers from the Tucson Airport Police Department reported that the winds were out of the south at 10 miles per hour, with occasional variations in direction from west through east.

Factual narrative

On May 8, 2002, at 1030 mountain standard time, a Cessna 172M, N754LT, collided with terrain during an aborted landing from the Continental airstrip (private), Green Valley, Arizona. The airplane was owned and operated by Wright Flight, Inc., of Tucson, Arizona, under the provisions of 14 CFR Part 91. The private pilot was not injured and the airline transport pilot licensed safety pilot sustained minor injuries; the airplane sustained substantial damage. Visual meteorological conditions prevailed and no flight plan had been filed for the local area personal proficiency flight that departed from the Tucson International Airport (TUS), Tucson, about 0900.

Officers from the Pima County Sheriff's Department and the Tucson Airport Authority Police Department responded to the accident site. They stated that the airplane was resting on a hillside just to the east of the Continental airstrip's north-south asphalt runway. The propeller was extensively bent and curled. The landing gear was torn off the fuselage and impact damage was evident to one wing and the fuselage belly. The flaps appeared to be full down. Both occupants exited the airplane unassisted and were transported to a hospital for medical treatment and evaluation. The winds at the accident site were from the south at an estimated 10 mph, with occasional variations in the direction from west through east.

The pilot was interviewed by telephone at a later time. He reported that he was doing high air work that included slow flight and stalls, when he decided to do some landings at Continental airstrip. He listened to the Airport Terminal Information Service (ATIS) for both Tucson and Nogales (Continental airstrip is almost exactly between the two airports, which are about 15 to 20 miles north and south of the airstrip), and both were reporting calm wind conditions. He did not overfly the airport to check for wind indications, and performed an extended right base entry to a long final approach. Neither he nor his passenger saw any indications of unusual wind activity, and assumed the wind was calm.

About 100 feet above ground level (agl) on short final approach to runway 1, the airplane encountered a down draft and literally "fell to the runway." The airplane bounced very hard, then bounced again and became airborne. He realized that trying to save the landing was not a good idea so he added full power to go around and abort the landing. The airplane became airborne and headed off the right side of the runway toward a hill rising about 40 feet that was about 200 feet from the pavement. The airplane was sluggish and would not climb, and he had trouble trying to make it turn to the left. He said he did not have time to retract the flaps before impact with the hillside. Both pilots indicated that prior to impact, the engine sounds were normal. It was later established that controls were functional and continuous, and no mechanical anomalies present.

Using a Safety Board computer program, the density altitude was calculated at 5,050 feet mean sea level (msl).

Aircraft

Registration
N754LT
Reported as
Cessna 172M
Category
Airplane
Serial number
172-64815
Airframe hours
10,312.2
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Wright Flight Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 4, 2001 · 88.7 hours before
Departed
OLS · Nogales, AZ
Destination
KTUS · Tucson, AZ
Airport
35AZ · Continental Airstrip, runway 01, 3,500 × 50 ft, dirt

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
39
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
October 3, 2000
Seat
Left
Flight hours
116 total · 62 in this make and model · 116 as pilot in command · 4 in the last 90 days · 1 in the last 30 days
Role
Co-pilot
Age
47
Injuries
Minor
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Last flight review
March 6, 2001
Seat
Right
Flight hours
4,200 total · 400 in this make and model · 2,700 as pilot in command · 50 in the last 90 days · 20 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
0° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 21 °F
Altimeter
29.95 inHg
Observed at
KTUS, 17 nm away

Docket · 5

The files NTSB released with the investigation on December 12, 2003, on NTSB’s docket system: statements, records, photos and specialists’ reports. 610 KB in all.

FAA reports on this event · 1

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