WPR18CA048

NTSB accident investigation · Cessna 172P · Valley Springs, CA · December 14, 2017

Accident · Serious injuriesData collectionFinal report
Date
December 14, 2017, 13:44 local (21:44 UTC)
Place
Valley Springs, CA
Injuries
2 serious
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N54873Cessna 172P
Defining event
Landing: Roll over
Weather
Visual (VMC) · Day
Status
Completed · report June 14, 2018
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA-FSDO
FAA report
20171214024349A
Case key
96488

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 clearance from trees while maneuvering for landing and his decision to land on a surface with obstructions.

Findings · 5

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.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172P: 4 casesAll aircraft: 1,310 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on operationCessna 172P: 6 casesAll aircraft: 933 casesProbable cause
Object/animal/substance: debris/dirt/foreign objectEnvironmental issues › Physical environment · Decision related to conditionCessna 172P: 1 caseAll aircraft: 101 cases

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 two commercial pilots reported that the purpose of the flight was to identify suitable emergency landing sites in the area. They located a small private airport, and they decided to make a landing. The right-seat pilot took control and made a low pass over the runway and saw piles of gravel blocking half the width of the runway. He decided to attempt a short-field landing. While maneuvering for landing, the airplane was in a left bank turn when the wing collided with a tree. The pilot applied rudder control and thought about going around but decided against it due to trees blocking the runway. He entered the airplane into a left-wing-down slip as he tried to keep the airplane as level as possible. The airplane touched down on the right landing gear, and the right wing dug into the dirt. The airplane subsequently came to rest inverted. During the accident sequence, the airplane sustained substantial damage to the fuselage, empennage, and wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane or engine that would have precluded normal operation. Neither pilot submitted the National Transportation Safety Board Pilot/Operator Aircraft Accident/Incident Form 6120.1.

Factual narrative

The two commercial pilots reported that the purpose of the flight was to identify suitable emergency landing sites in the area. A small private airport was located, and they decided to make a landing. The right seat pilot took control and made a low pass over the runway and discovered piles of gravel blocking half the width of the runway. He decided to attempt a short field landing. While maneuvering for landing, the airplane was in a left bank turn when the wing collided with a tree. The pilot applied rudder control and thought about going around but decided against it due to trees blocking the runway. The airplane was put into a left wing down slip as he tried to keep the airplane as level as possible. The airplane touched down on the right-side landing gear and the right wing dug into the dirt. The airplane subsequently came to rest inverted. During the accident sequence the airplane sustained substantial damage to the fuselage, empennage and wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane or engine that would have precluded normal operation. Neither pilot submitted the National Transportation Safety Board Pilot/Operator Aircraft Accident/Incident Form 6120.1.

Aircraft

Registration
N54873
Reported as
Cessna 172P (P)
Category
Airplane
Serial number
17275075
Built
1981
Engine
Lycoming O-320 SERIES, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
None
Departed
RIU · Rancho Murieta, CA
Destination
UNK · Valley Springs, CA
Airport
UNK · Wagon Wheel Ranch Privat Strip

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
72
Injuries
Serious
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Waiver time limited special
Seat
Right
Restraint
3-point
Role
Pilot-rated passenger
Age
75
Injuries
Serious
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3
Seat
Left
Restraint
3-point

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 34 °F
Altimeter
30.13 inHg
Observed at
KO22, 16 nm away

Docket · 3

The files NTSB released with the investigation on May 2, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.8 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.