ERA10CA476

NTSB accident investigation · Goodman Robert Bruce RV-4 · Gainesville, GA · September 12, 2010

Accident · No injuriesData collectionFinal report
Date
September 12, 2010, 16:23 local (20:23 UTC)
Place
Gainesville, GA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N311UGoodman Robert Bruce RV-4
Defining event
Enroute-cruise: Controlled flight into terr/obj (CFIT)
Weather
Visual (VMC) · Day
Status
Completed · report May 5, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20100912046209A
Case key
77272

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 failure to see and avoid marked power lines during low-level flight over a lake.

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.

Action: lack of actionPersonnel issues › Action/decision · PilotGoodman Robert Bruce RV-4: 1 caseAll aircraft: 792 casesProbable cause
Object/animal/substance: wireEnvironmental issues › Physical environment · Awareness of conditionGoodman Robert Bruce RV-4: 1 caseAll aircraft: 588 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

According to the pilot, while on a cross country flight he decided to descend and overfly a lake. While maneuvering over the lake with the setting sun at low level, the right main landing gear struck a marked power line, about 70 feet above the lake's surface; the right landing gear separated and broke an engine mount on the airplane. The pilot immediately turned the airplane toward a nearby airport and performed a forced landing. The left main landing gear collapsed on landing and the firewall sustained substantial damage. The pilot reported no mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation. A witness stated that the power lines were marked by orange balls, while the pilot stated that the balls were red and dark. When asked how the accident could have been prevented, the pilot stated that yellow or white balls would have been easier to see.

Factual narrative

According to the pilot, while on a cross country flight, he descended and overflew a lake along his route of flight. Flying into the setting sun at low level over the lake, the right main landing gear struck a marked power line, about 70 feet above the lake's surface, which separated the right landing gear and broke an engine mount on the airplane. The pilot turned "immediately" for a nearby airport and completed the forced landing which collapsed the left main landing gear and damaged the firewall. The pilot reported there were no mechanical anomalies with the airplane. A witness stated that the power lines were marked by orange balls, while the pilot stated that the balls were red and "dark." When asked how the accident could have been prevented, the pilot stated that "yellow or white balls would have been easier to see."

Aircraft

Registration
N311U
Reported as
Goodman Robert Bruce RV-4
Category
Airplane, amateur-built
Serial number
2362
Airframe hours
1,410
Engine
Ama/Expr UNKNOWN ENG, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · September 13, 2009
Departed
INT · Winston Salem, NC
Destination
CTJ · Carrollton, GA
Airport
GVL · Lee Gilmer Memorial Airport, runway 23, 5,500 × 100 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
65
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
June 13, 2009
Seat
Front
Flight hours
5,022 total · 1,410 in this make and model · 50 in the last 90 days · 15 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 9 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 55 °F
Altimeter
30.02 inHg
Observed at
GVL

Docket · 6

The files NTSB released with the investigation on October 18, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.0 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.