ATL97FA034

NTSB accident investigation · Cessna A150L · Trinity, AL · February 1, 1997

Accident · FatalField investigationFinal report
Date
February 1, 1997, 09:21 local (15:21 UTC)
Place
Trinity, AL
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N50TBCessna A150L
Weather
Visual (VMC) · Day
Status
Completed · report December 15, 1997
Report
Approved by Office Director
FAA report
19970201000999A
Case key
3773

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The NTSB’s determination of the probable cause, and any contributing factors.

failure of the pilot to maintain flying airspeed, while maneuvering at low altitude, which resulted in a stall and subsequent collision with a tree, utility line, and the ground.

Analysis

A few minutes after takeoff, the airplane was next seen flying in the vicinity of the accident site. One eyewitness stated that when the airplane first flew overhead, it was just above the tree tops. Another eyewitness observed the airplane as the pilot made several low passes. On the last low pass, the pilot initiated a steep climb which terminated in what was described as a 'hammerhead stall.' The airplane entered a spin, descended from about 500 feet, and crashed adjacent to a single family dwelling, hitting a tree and utility line as it descended to the ground. All aircraft components were located in the immediate vicinity of the main wreckage. Subsequent examination of the engine assembly failed to disclose a mechanical problem. Examination of the airframe and aircraft systems also failed to disclose a mechanical problem.

Factual narrative

The factual narrative644 words

History of flight

On February 1, 1997, at 0921 central standard time, a Cessna A150L, N50TB, collided with utility lines and a tree while maneuvering over a residential area near Trinity, Alabama. The personal flight operated under the provisions of Title 14 CFR Part 91 with no flight plan filed. Visual weather conditions prevailed at the time of the accident. The airplane was destroyed. The pilot and passenger were fatally injured. The flight departed Pryor Field in Decatur, Alabama, at 0900.

Friends of the pilot and passenger reported that they had planned to go flying after they got off work on the morning of the accident. An official of Decatur/Athens Aero Services reported that the pilot arrived at the airport at approximately 0900 hours, entered flight operation alone, and rented N50TB for about two hours.

A few minutes after takeoff from Pryor Field, the airplane was seen flying in the vicinity of Trinity, Alabama. One eyewitness stated that, when the airplane first flew overhead, it was just above the tree tops. Another witness observed the airplane as the pilot made several low passes. On the last low pass, the pilot initiated a steep climb which terminated in what was described as a "hammerhead stall." The airplane entered a spin, descended from about 500 feet, and collided with utility lines adjacent to a single family dwelling (see attached witness statements).

Personnel information

Information about the pilot is included in this report under the data field labeled "First Pilot" on page 3 of the factual report. The pilot's flight logs were not recovered for examination, and Decatur/Athens Aero services did not have recorded data about the pilot's recent flight experience.

Aircraft information

Information about the airplane is included in this report under the data field labeled "Aircraft Information" on page 2 of the factual report.

Meteorological information

Visual weather conditions prevailed at the time of the accident. Weather information is contained in this report under the data field labeled "Weather Information" on page 4 of the factual report.

Wreckage and impact information

The airplane impacted the ground adjacent to Mud Tavern Road in the community of Trinity. Examination of the accident site disclosed that the airplane wreckage was scattered over an area the approximate dimensions of the airframe. The horizontal stabilizer and vertical fin assemblies rested along the edge of the paved county road. The nose section of the airframe rested in the drainage ditch adjacent to the road surface. Additional debris from the damaged tree and downed utility lines was located in the immediate vicinity of the impact site. Despite the closeness of the accident site to a single family dwelling, the structure sustained minimal damage.

Examination of the aircraft wreckage at the accident site revealed that engine and propeller assemblies were buried two feet into the ground. The engine firewall was displaced aft into the pilot's and passenger's stations. Both aircraft seats were dislodged from their normally installed positions; the cockpit floor and seat tracks assemblies sustained buckling deformation. The leading edges of both wing assemblies sustained perpendicular crushing damage, and the wing assemblies were deflected aft from their normally installed positions. The pilot's station and the fuselage livable space sustained crushing damage. Despite impact damage to the airframe, flight control cables and fittings were examined at their normally installed positions. All aircraft components were located in the immediate vicinity of the main wreckage.

The subsequent examination of the engine assembly failed to disclose a mechanical problem. Examination of the airframe and aircraft systems also failed to disclose a mechanical problem.

Medical and pathological information

The autopsy on the pilot was conducted by Dr..Joseph Emory, on February 2, 1997 at the Alabama Department of Forensic Science in Birmingham, Alabama. The Toxicological examinations were negative for drugs and alcohol.

Additional information

The aircraft wreckage was released to, Mr. Edward C. Smith, President, Decatur/Athens Aero Services.

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 flightManeuvering
Low pass - performedPilot in command
Pull-up - initiatedPilot in command
Airspeed - not maintainedPilot in commandCause
Stall - inadvertentPilot in commandCause
In flight collision with objectDescent - uncontrolled
Object - tree(s)
Object - wire,transmission
In flight collision with terrain/waterDescent - uncontrolled

Aircraft

Registration
N50TB
Reported as
Cessna A150L
Category
Airplane
Serial number
A150-3376
Airframe hours
2,526
Engine
Continental O-200-A, 100 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Billy D. Parker
Registered owner
Decatur Athens Aero Services
Airworthiness certificate
Standard, Utility
Last inspection
Annual · June 12, 1996 · 44 hours before
Departed
DCU · Decatur, AL

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
26
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
140 total

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
50 °F, dew point 39 °F
Altimeter
29.00 inHg
Observed at
HSV, 27 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.