WPR12CA337

NTSB accident investigation · Cessna 172 · Grand Canyon, AZ · July 28, 2012

Accident · Minor injuriesData collectionFinal report
Date
July 28, 2012, 10:00 local (17:00 UTC)
Place
Grand Canyon, AZ
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8100BCessna 172
Defining event
Landing-flare/touchdown: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report November 5, 2012
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20120728016689A
Case key
84514

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 improper flare and inadequate recovery from a bounced landing.

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.

Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172: 5 casesAll aircraft: 1,285 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 172: 30 casesAll aircraft: 9,295 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 upon entering the airport traffic pattern, he remained at a higher altitude than normal on the downwind and base legs due to helicopter traffic. Upon turning onto the final leg, the approach angle to the runway was steeper than normal and the airplane was still high. He stated that due to the steeper approach angle, he misjudged the landing flare; the airplane landed hard, bounced, and began to porpoise. As the pilot attempted to abort the landing, the airplane veered to the right and landed in the dirt adjacent to the runway where the airplane nosed over and sustained structural damage to both wings, the vertical stabilizer, and the rudder. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The pilot reported that upon entering the airport traffic pattern, he remained at a higher altitude than normal on downwind and base legs due to helicopter traffic. Upon turning final, the approach angle to the runway was steeper than normal, and the airplane was still high. The pilot stated that due to the steeper approach angle he misjudged the landing flare; the airplane landed hard, bounced, and began to porpoise. As he attempted to abort the landing, the airplane veered to the right and landed in the dirt adjacent to the runway. Subsequently, the airplane nosed over, which resulted in structural damage to both wings, vertical stabilizer, and rudder. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N8100B
Reported as
Cessna 172
Category
Airplane
Serial number
29900
Airframe hours
2,588
Engine
Cont Motor O-300, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 14, 2012 · 28 hours before
Departed
FLG · Flagstaff, AZ
Destination
GCN · Grand Canyon, AZ
Airport
GCN · Grand Canyon National Park, runway 21, 8,999 × 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
Pilot
Age
52
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
July 19, 2011
Seat
Left
Flight hours
145 total · 123 in this make and model · 62 as pilot in command · 20 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 46 °F
Altimeter
30.34 inHg
Observed at
gcn

Docket · 2

The files NTSB released with the investigation on September 4, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 705 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.