LAX03CA248

NTSB accident investigation · Cessna 172S · Phoenix, AZ · July 10, 2003

Accident · No injuriesData collectionFinal report
Date
July 10, 2003, 08:00 local (15:00 UTC)
Place
Phoenix, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N787WWCessna 172S
Weather
Visual (VMC) · Day
Status
Completed · report November 25, 2003
Report
Approved by Office Director
Parties
FAA-SDL-FSDO
FAA report
20030710036549A
Case key
57608

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's misjudged landing flare and inadvertent entry into a porpoise pilot-induced oscillation.

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.

Hard landingLanding - flare/touchdown
Flare - misjudgedPilot in commandCause
Porpoise/pilot-induced oscillation - inadvertentPilot in commandCause

Analysis

The airplane porpoised during landing. As a result, the firewall and engine mounts were bent. The student reported that he had been practicing maneuvers in the practice area and was returning to the airport to land. He extended his downwind leg due to traffic in the pattern and entered final approach "a little high." He "flared too high, slowed, and landed flat." Then, he "porpoised airplane and landed nose gear first on [the] second touchdown." He felt the damage occured on the second touchdown. He then performed a go-around, did a second go-around after being too high on final, and landed on the third approach without difficulty. The student did not report any mechanical difficulties with the airplane prior to the accident.

Factual narrative

On July 10, 2003, about 0800 mountain standard time, a Cessna 172S, N787WW, porpoised during landing at Deer Valley Airport (DVT), Phoenix, Arizona. As a result, the firewall and engine mounts were bent. Westwind Aviation was operating the airplane under the provisions of 14 CFR Part 91. The student was not injured; the airplane sustained substantial damage. Visual meteorological conditions prevailed during the local area instructional flight and no flight plan had been filed. The flight departed from Deer Valley at 0700.

In a written statement, the student reported that he had been practicing maneuvers in the practice area and was returning to Deer Valley to land. He extended his downwind leg due to traffic in the pattern and entered final approach "a little high." He "flared too high, slowed, and landed flat." Then, he "porpoised [the] airplane and landed nose gear first on [the] second touchdown." He felt the damage occured on the second touchdown. He then performed a go-around, did a second go-around after being too high on final, and landed on the third approach without difficulty. The student did not report any mechanical difficulties with the airplane prior to the accident.

Aircraft

Registration
N787WW
Reported as
Cessna 172S
Category
Airplane
Serial number
17258589
Airframe hours
2,086.7
Engine
Lycoming IO-360-L2A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Westwind Aviation
Registered owner
Executives International Aviation, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 30, 2003 · 40.2 hours before
Departed
KDVT · Phoenix, AZ
Airport
KDVT · Deer Valley, runway 7L

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
54
Injuries
None
Certificate
Student
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
88 total · 88 in this make and model · 3 as pilot in command · 35 in the last 90 days · 10 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 50 °F
Altimeter
29.81 inHg
Observed at
KDVT

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.