CEN11LA204

NTSB accident investigation · Cessna 172N · Andrews, TX · February 25, 2011

Accident · Serious injuriesLimited investigationFinal report
Date
February 25, 2011, 12:38 local (18:38 UTC)
Place
Andrews, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Emergency descent
Aircraft
N739BLCessna 172N
Defining event
Emergency descent: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report August 11, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20110225002899A
Case key
78434

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 airspeed during an emergency descent, following a loss of engine power, which resulted in an inadvertent stall.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Engine (reciprocating)Aircraft › Aircraft power plant · FailureCessna 172N: 4 casesAll aircraft: 497 casesProbable cause
Not determinedNot determined › Not determined · Unknown/Not determinedCessna 172N: 24 casesAll aircraft: 2,247 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172N: 19 casesAll aircraft: 1,681 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot said that shortly after liftoff, the engine lost power at an altitude of 400 to 500 feet above ground level (agl). He was able to maintain a controlled descent until approximately 100 feet agl, where the airplane stalled and impacted the ground. The engine was later examined, and no anomalies were found.

Factual narrative

On February 25, 2011, at 1238 central standard time, a Cessna 172N, N739BL, was substantially damaged when it impacted terrain shortly after taking off Andrews County Airport (E11), Andrews, Texas. Visual meteorological conditions (VMC) prevailed at the time of the accident. The personal flight was being conducted under the provisions of 14 Code of Federal Regulations (CFR) Part 91 without a flight plan. The pilot, the sole occupant on board, was seriously injured. The cross-country flight was originating at the time of the accident, and was destined for Midland (MDD), Texas. According to a Federal Aviation Administration (FAA) inspector, a witness who was servicing his airplane observed the beginning of the takeoff roll. The witness looked away and then heard the sound of impact. When he looked up, the airplane was off to the side of the runway. All of the wreckage was confined to a small area. According to the pilot's accident report, the engine "failed" at an altitude of 400 to 500 feet above ground level (AGL). The pilot said he was able to maintain a controlled descent until approximately 100 feet AGL., where the airplane stalled and impacted the ground adjacent the departure end of the runway. On May 4, 2011, the engine was examined at the facilities of Air Salvage of Dallas, Texas. No anomalies were found.

Aircraft

Registration
N739BL
Reported as
Cessna 172N
Category
Airplane
Serial number
17270412
Airframe hours
8,981
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Stephan Warren Company
Registered owner
Stephan Warren Company
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 3, 2010 · 30 hours before
Departed
E11 · Andrews, TX
Destination
MDD · Midland, TX
Airport
E11 · Andrews County, runway 02, 2,939 × 75 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
49
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
December 3, 2010
Seat
Left
Flight hours
174 total · 80 in this make and model · 139 as pilot in command · 30 in the last 90 days · 15 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
57 °F, dew point 37 °F
Altimeter
30.02 inHg
Observed at
MDD, 30 nm away

Docket · 10

The files NTSB released with the investigation on June 16, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 9.1 MB 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.