CEN14LA471

NTSB accident investigation · Boring Robert Burton RV6A · Las Cruces, NM · September 1, 2014

Accident · Serious injuriesLimited investigationFinal report
Date
September 1, 2014, 08:30 local (14:30 UTC)
Place
Las Cruces, NM
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N613LEBoring Robert Burton RV6A
Defining event
Approach-VFR pattern final: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report October 19, 2015
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA - Albuquerque FSDO
FAA report
20140901015379A
Case key
90002

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 maintain adequate airspeed, which led to the airplane exceeding its critical angle-of-attack and experiencing a stall/spin.

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.

Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Capability exceededBoring Robert Burton RV6A: 1 caseAll aircraft: 990 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedBoring Robert Burton RV6A: 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 he and another pilot had conducted a series of touch-and-go landings. He added that, after takeoff for the accident touch-and-go landing and during the base-to-final turn in the airport traffic pattern, the airplane's bank angle was too steep, its nose attitude was too high, and its airspeed was low. The airplane then entered a stall/spin. The pilot was able to recover to a wings-level, nose-low attitude before the airplane impacted the ground short of the runway. The pilot reported no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

On September 1, 2014, about 0830 mountain daylight time, an amateur-built RV-6A airplane was substantially damaged when it impacted the ground following a loss of control during a landing approach to runway 8 at the Las Cruces International Airport, Las Cruces, New Mexico. The pilot received serious injuries and the pilot rated passenger received minor injuries. The airplane received substantial damage to both wings and the fuselage. The aircraft was registered to and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which was not operated on a flight plan. The local flight originated about 0730. The pilot reported that he and another pilot had performed a series of touch and go landings using runway 26. They then continued making touch and go landings using the other runways at the airport. The last takeoff prior to the accident was made from runway 22. They then entered a left downwind for runway 8, and then turned from the downwind to the base leg. The pilot stated that the base to final turn started to get steep as to not "overrun the runway" and the nose attitude was slightly high. When the airplane was about halfway through the base to final turn, the pilot felt that the airplane was slow and they needed to get the nose down. About that time he felt the pre-stall "burble" and he immediately knew that the airplane bank was too steep and the airspeed was too slow. He immediately pushed forward on the controls as the stall/spin began. He was able to recovery to a wings level, nose low attitude before the airplane impacted the ground short of the runway. In his report he stated that there were no mechanical malfunctions of the airplane.

Aircraft

Registration
N613LE
Reported as
Boring Robert Burton RV6A (A)
Category
Airplane, amateur-built
Serial number
23993
Built
2002
Airframe hours
324.2
Engine
Lycoming O-320 E2D, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · August 6, 2014
Departed
LRU · Las Cruces, NM
Destination
LRU · Las Cruces, NM
Airport
LRU · Las Cruces Intl, runway 08, 6,069 × 100 ft, asphalt
Equipment
Handheld GPS, Auto-pilot

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
42
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Seat
Right
Restraint
4-point
Flight hours
773 total · 10 in this make and model · 743 as pilot in command · 35 in the last 90 days · 16 in the last 30 days · 0 in the last 24 hours
Role
Co-pilot
Age
31
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Left
Restraint
4-point
Flight hours
3 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Observed at
LRU, 1 nm away

Docket · 1

The files NTSB released with the investigation on September 17, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.9 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.

Other investigations on N613LE · 1

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