WPR10CA323

NTSB accident investigation · Cessna 172M · Twin Falls, ID · July 1, 2010

Accident · No injuriesData collectionFinal report
Date
June 30, 2010, 20:08 local (Jul 1, 2010, 02:08 UTC)
Place
Twin Falls, ID
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N64427Cessna 172M
Defining event
Landing-flare/touchdown: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed · report October 21, 2010
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20100630036539A
Case key
76508

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 landing flare.

Findings · 2

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotCessna 172M: 123 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172M: 37 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 pilot reported that on landing he touched down on the main landing gear but with the nose low. The airplane ballooned slightly, and the pilot applied power to ease the descent. The main landing gear touched down a second time and the pilot held "as much back pressure" as he could on the yoke. When the nose gear touched the ground the pilot heard a "grinding" noise and the airplane "began to buck," then veered to the left but stayed on the runway. The propeller then struck the runway, resulting in substantial damage to the firewall. When the pilot climbed out of the airplane, he observed that the nose gear tire was flat and the oleo strut was empty of fluid. The pilot reported that there was no mechanical malfunction or failure with the airplane before the accident.

Factual narrative

The pilot reported that on landing he touched down on the main landing gear but with the nose low. The airplane ballooned slightly, and the pilot applied power to ease the descent. The main landing gear touched down a second time and the pilot held "as much back pressure" as he could on the yoke. When the nose gear touched the ground the pilot heard a "grinding" noise and the airplane "began to buck," then veered to the left but stayed on the runway. The propeller then struck the runway, resulting in substantial damage to the firewall. When the pilot climbed out of the airplane, he observed that the nose gear tire was flat and the oleo strut was empty of fluid. The pilot reported that there was no mechanical malfunction or failure with the airplane before the accident.

Aircraft

Registration
N64427
Reported as
Cessna 172M
Category
Airplane
Serial number
17265219
Airframe hours
9,823
Engine
Lycoming O-320 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
AvCenter Inc.
Registered owner
Teton Leasing LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · June 21, 2010
Departed
KBOI · Boise, ID
Destination
KTWF · Twin Falls, ID
Flight plan
VFR
Airport
KTWF · Magic Valley, runway 25, 8,703 × 150 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
Student pilot
Age
24
Injuries
None
Certificate
Student
Medical
Class 3, Without waivers/limitations
Seat
Left
Flight hours
33 total · 33 in this make and model · 4 as pilot in command · 9 in the last 90 days · 5 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 39 °F
Altimeter
29.86 inHg
Observed at
TWF

Docket · 1

The files NTSB released with the investigation on August 3, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 601 KB 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.

Other investigations on N64427 · 1

Matched to the same aircraft by N-number and date.