CEN19LA183

NTSB accident investigation · Piper PA24 · Greeley, CO · June 24, 2019

Accident · No injuriesClass 3 · LimitedFinal report
Date
June 24, 2019, 10:25 local (16:25 UTC)
Place
Greeley, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N5866PPiper PA24
Defining event
Landing-flare/touchdown: Abnormal runway contact
Weather
Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA
FAA report
20190624005719A
Case key
99704

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot’s improper landing flare, which resulted in failure of the right main landing gear and a subsequent loss of control.

Findings · 3

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.

Action: incorrect action performancePersonnel issues › Action/decision · PilotPiper PA-24-250: 2 casesAll aircraft: 1,386 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-24-250: 34 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-24-250: 8 casesAll aircraft: 3,958 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 stated that the final approach and touchdown were uneventful, but then the airplane's right wing “dipped,” the nose veered left, and the airplane departed the runway surface. Witnesses reported that, during the landing, the nose gear contacted the runway first and then the airplane became airborne again. After the second touchdown, the airplane veered left into the grass. Examination of the airplane revealed that the right main landing gear sustained damage consistent with an excessive side load during landing. There was no evidence of a preimpact mechanical malfunction that would have precluded normal operation. Based on the available information, the accident is consistent with the pilot’s improper landing flare, which resulted in touchdown on the runway with a side load on the landing gear, failure of the right main gear, and a loss of control.

Factual narrative

On June 24, 2019, about 1025 mountain daylight time, a Piper PA-24 airplane, N5866P, was substantially damaged when it was involved in an accident near Greeley, Colorado. The private pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that he completed a touch-and-go landing, which was uneventful, and he planned his next landing to be a full-stop landing. The pilot stated everything "was good" until touching down, when the airplane's right wing “dipped” and the nose veered left, causing the airplane to exit the runway surface. The airplane hit a taxiway light and continued into the grass on the south side of the runway, where it came to rest. A flight instructor who witnessed the accident stated that, during the landing, the nose landing gear hit the runway first and the airplane bounced and became airborne again before he lost sight of it. Examination of the airplane revealed that the side brace stud of the right main gear side brace upper link assembly was disconnected from the main gear side brace support fitting assembly. The roll pin inserted through the threading on the stud that connected to the support fitting was sheared and the threads of the stud were stripped. The push/pull (conduit) cable assembly arm that connected to the main gear side brace upper link assembly and actuated the landing gear was bent upward. No mechanical anomalies that would have precluded normal operation of the landing gear were found.

Aircraft

Registration
N5866P
Reported as
Piper PA24 (250)
Category
Airplane
Serial number
24-949
Built
1959
Engine
Lycoming O-540 SERIES, 250 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 9, 2018
Departed
GXY · Greeley, CO
Destination
GXY · Greeley, CO
Airport
GXY · Greeley-Weld County, runway 28, 5,801 × 100 ft, asphalt
Equipment
Stall warning system, 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
57
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
BasicMed, Without waivers/limitations
Last flight review
September 9, 2018
Seat
Left
Flight hours
395 as pilot in command · 1 in the last 90 days

Weather

Conditions
Day
Wind
190° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 52 °F
Altimeter
29.95 inHg
Observed at
KGXY

Docket · 4

The files NTSB released with the investigation on November 17, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.9 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.