ERA12CA321

NTSB accident investigation · Eiriavion PIK 20D · Eagleville, TN · May 6, 2012

Accident · Serious injuriesData collectionFinal report
Date
May 6, 2012, 15:06 local (20:06 UTC)
Place
Eagleville, TN
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N39RBEiriavion PIK 20D
Defining event
Approach-VFR pattern final: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report October 15, 2012
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20120506008659A
Case key
83563

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 glider’s encounter with atmospheric lift conditions not sufficient to maintain flight, which resulted in an aerodynamic stall.

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 · PilotEiriavion PIK 20D: 2 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedEiriavion PIK 20D: 1 caseAll aircraft: 1,681 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, when he was preparing to land, the wind favored a landing to the north. However, during the approach to land, he observed another glider being pulled out onto the field. Concerned about obstacle clearance during the landing, the pilot continued north on a downwind leg to set up for a landing to the south. The last thing he recalled before the accident was encountering a “very strong sink.” The glider subsequently collided with a cedar tree and the ground, substantially damaging the glider’s empennage. A witness reported that the glider appeared to climb and then banked hard to the right and rolled upside down before the collision. Postaccident examination and the pilot’s statement indicated no preimpact mechanical malfunctions or failures that would have precluded normal operation.

Factual narrative

The pilot reported that he was preparing to land and the wind favored an approach to the north. While on approach to land, he observed another glider being pulled out onto the field. Concerned about obstacle clearance during the landing, he continued on a downwind leg to the north to set up for a landing to the south. The last thing he recalled prior to the accident was a “very strong sink.” The glider collided with a cedar tree, then the ground, about 1,016 feet from the north end of the runway. A witness reported that the glider appeared to climb and then banked hard to the right and rolled upside down before the collision. An inspector with the Federal Aviation Administration inspected the wreckage and confirmed substantial damage to the empennage. His inspection of the wreckage revealed that the glider was airworthy at the time of the accident. The pilot reported no mechanical malfunctions or failure that would have precluded normal operation of the glider.

Aircraft

Registration
N39RB
Reported as
Eiriavion PIK 20D
Category
Glider
Serial number
20597
Airframe hours
2,361
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Utility
Last inspection
Annual · November 27, 2011 · 11 hours before
Departed
50M · Eagleville, TN
Destination
50M · Eagleville, TN
Airport
50M · Puckett Gliderport, runway 14, 2,200 × 145 ft, grass/turf

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
60
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
October 7, 2011
Seat
Single
Flight hours
600 total · 7 in this make and model · 451 as pilot in command · 5 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
97 °F, dew point 64 °F
Altimeter
29.92 inHg
Observed at
MQY, 20 nm away

Docket · 5

The files NTSB released with the investigation on August 15, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.2 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.

Other investigations on N39RB · 1

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