GAA16CA052

NTSB accident investigation · Cessna 172S · Alcoa, TN · November 5, 2015

Accident · No injuriesData collectionFinal report
Date
November 4, 2015, 19:45 local (Nov 5, 2015, 00:45 UTC)
Place
Alcoa, TN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N905CPCessna 172S
Defining event
Taxi-from runway: Airport occurrence
Weather
Visual (VMC) · Night
Status
Completed · report March 14, 2016
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
Federal Aviation Administration
FAA report
20151104018439A
Case key
92338

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 pilot's failure to identify the taxiway, which resulted in a runway excursion and impact with terrain while turning off the runway at night.

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.

Light condition: darkEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna 172S: 19 casesAll aircraft: 448 casesProbable cause
Light condition: darkEnvironmental issues › Conditions/weather/phenomena · Effect on personnelCessna 172S: 19 casesAll aircraft: 448 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

During a night flight, the pilot reported that after he landed on the runway, he slowed the airplane to taxi speed, and continued to the taxiway turnoff. The pilot misidentified the taxiway turn and turned off the runway into a grass area between the runway and taxiway. The pilot reported that the grass area had a downslope that led to level ground and he felt a bump from the tail as the airplane transitioned from the downslope to level ground. The airplane sustained substantial damage to the rudder. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Factual narrative

During a night flight, the pilot reported that after he landed on the runway, he slowed the airplane to taxi speed, and continued to the taxiway turnoff. The pilot misidentified the taxiway turn and turned off the runway into a grass area between the runway and taxiway. The pilot reported that the grass area had a downslope that led to level ground and he felt a bump from the tail as the airplane transitioned from the downslope to level ground. The airplane sustained substantial damage to the rudder. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Aircraft

Registration
N905CP
Reported as
Cessna 172S
Category
Airplane
Serial number
172S8329
Built
1999
Airframe hours
2,669
Engine
Lycoming IO-360-L2A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Civil Air Patrol Inc
Registered owner
Civil Air Patrol Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 11, 2015
Departed
TYS · Alcoa, TN
Destination
TYS · Alcoa, TN
Airport
TYS · Mc Ghee Tyson, runway 23L, 8,997 × 150 ft, concrete
Equipment
Stall warning system, Electronic flight bag or handheld device, Auto-pilot

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
73
Injuries
None
Certificates
Flight instructor, Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
August 4, 2015
Seat
Left
Restraint
3-point
Flight hours
10,061 total · 200 in this make and model · 7,666 as pilot in command · 45 in the last 90 days · 3 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night
Wind
210° at 5 knots
Visibility
10 statute miles
Temperature
66 °F, dew point 5 °F
Altimeter
30.20 inHg
Observed at
KTYS, 1 nm away

Docket · 2

The files NTSB released with the investigation on February 8, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.1 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.