GAA17CA480

NTSB accident investigation · Thomas J Hankamp VAN'S Aircraft RV4 · Poughkeepsie, NY · July 28, 2017

Accident · No injuriesData collectionFinal report
Date
July 28, 2017, 12:17 local (16:17 UTC)
Place
Poughkeepsie, NY
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N9214Thomas J Hankamp VAN'S Aircraft RV4
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report November 14, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20170728012699A
Case key
95784

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 failure to maintain directional control during takeoff.

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: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedThomas J Hankamp VANS RV4: 1 caseAll 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 of the tailwheel-equipped airplane reported that, during a "taxi test" in crosswind conditions, he overcorrected, and the airplane ground looped. Subsequently, the airplane exited the runway to the right and came to rest nose down. The airplane sustained substantial damage to the firewall. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system on the accident airport reported that, about the time of the accident, the wind was from 320° at 5 knots. The pilot was departing from runway 06. The Federal Aviation Administration (FAA) inspector reported that, throughout many conversations with the pilot, the initial statement was that the pilot lost control during takeoff and did have intent for flight. The FAA inspector verified this after talking with the local tower, who had cleared the airplane for takeoff.

Factual narrative

The pilot of the tailwheel-equipped airplane reported that, during a "taxi test" in crosswind conditions, he over corrected and ground looped. Subsequently, the airplane exited the runway to the right and came to rest nose down. The airplane sustained substantial damage to the firewall. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system on the accident airport reported that, about the time of the accident, the wind was from 320° at 5 knots. The pilot was departing on runway 06. The Federal Aviation Administration Inspector reported that, throughout many conversations with the pilot, the initial statement was that the pilot lost control during takeoff and did have intent for flight. The FAA Inspector verified this after talking with the local tower, who had cleared the airplane for takeoff.

Aircraft

Registration
N9214
Reported as
Thomas J Hankamp VAN'S Aircraft RV4 (NO SERIES)
Category
Airplane, amateur-built
Serial number
538
Built
2016
Airframe hours
8
Engine
Subaru EJ25, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Unknown · October 20, 2016
Departed
POU · Poughkeepsie, NY
Airport
POU · Hudson Valley Rgnl, runway 06, 5,001 × 100 ft, asphalt
Equipment
Electronic primary flight display, Electronic flight bag or handheld device, Satellite tracking device

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
79
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
March 5, 2015
Seat
Front
Restraint
4-point
Flight hours
650 total · 5 in this make and model · 534 as pilot in command · 9.6 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 5 knots
Visibility
10 statute miles
Lowest ceiling
9,500 ft broken
Temperature
79 °F, dew point 64 °F
Altimeter
29.86 inHg
Observed at
KPOU

Docket · 3

The files NTSB released with the investigation on October 19, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.1 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.