WPR21LA186

NTSB accident investigation · Cessna 172P · Tucson, AZ · May 8, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
May 8, 2021, 10:27 local (17:27 UTC)
Place
Tucson, AZ · KRYN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N54140Cessna 172P
Defining event
Landing-flare/touchdown: Hard landing
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
FAA
FAA report
20210508008239A
Case key
103052

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 student pilot’s improper pitch control and landing flare, which resulted in a hard bounce and subsequent porpoised landing.

Findings · 4

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: pitch controlAircraft › Aircraft oper/perf/capability · Incorrect use/operationCessna 172P: 8 casesAll aircraft: 526 casesProbable cause
Info processing/decision: decision making/judgmentPersonnel issues › Action/decision · Student/instructed pilotCessna 172P: 20 casesAll aircraft: 3,098 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotCessna 172P: 76 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172P: 38 casesAll aircraft: 1,285 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 student pilot reported that during a supervised solo training flight, he was instructed to remain within the airport traffic pattern and perform three full stop takeoffs and landings. During the second landing, the airplane porpoised and veered left, so he aborted the landing and initiated a go-around. The student’s flight instructor observed the solo flight and recalled that the wind was light and variable. He reported that during the student’s third landing, the airplane floated for several seconds before the nose dropped and the airplane landed hard. Subsequently, the airplane bounced, a porpoise ensued, and a propeller strike occurred. The airplane remained on the runway and the student pilot taxied to the parking area. The airplane sustained substantial damage to the lower fuselage forward bulkheads and stringers. The student pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N54140
Reported as
Cessna 172P
Category
Airplane
Serial number
17274887
Built
1981
Airframe hours
7,103.7
Engine
Lycoming O-320-D2J, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Daniel Mosier, doing business as Plane Folks LLC
Registered owner
Nelson E. Daley
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 2, 2021 · 11.7 hours before
Airport
RYN · Ryan Fld, runway 06L/24R, 4,900 × 75 ft, asphalt
Equipment
ADS-B

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
50
Injuries
None
Certificate
Student
Medical
Class 3, Without waivers/limitations
Seat
Left
Restraint
3-point
Flight hours
50.6 total · 50.6 in this make and model · 6.3 as pilot in command · 17.5 in the last 90 days · 9.5 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Temperature
82 °F, dew point 19 °F
Altimeter
29.95 inHg
Observed at
KRYN, 1 nm away
METAR
KRYN 081645Z 00000KT 10SM CLR 28/M07 A2995

Docket · 3

The files NTSB released with the investigation on August 3, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 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.