GAA16CA026

NTSB accident investigation · Rans S-7 · Gerlach, NV · October 21, 2015

Accident · No injuriesData collectionFinal report
Date
October 21, 2015, 11:15 local (18:15 UTC)
Place
Gerlach, NV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N272XRans S-7
Defining event
Maneuvering-low-alt flying: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report March 14, 2016
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
Federal Aviation Administration
Case key
92217

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 pitch and airspeed control, in conjunction with full flaps, while maneuvering at a low altitude, resulting in a tail-stall and subsequent impact with the ground.

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.

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 flying in a high desert valley, he intended to perform a low pass over a remote airstrip to assess its suitability for landing in the future. The pilot reported that prior to the pass, he slowed the airplane and added full flaps. He said that in this airplane configuration, following a left turn, the "flight controls in pitch became loose as if the tail stalled," and right afterward "the nose pitched down." He reported that he added power, and that his sensation was "that the plane was flying but being pushed to the ground with no feedback from the elevator." The pilot reported that as he approached the ground, he applied back pressure but the airplane impacted the ground hard. The airplane sustained substantial damage to the right wing and fuselage. The pilot reported that there were no mechanical failures or anomalies prior, to or during the flight that would have prevented normal flight operation. It is likely that the airplane's configuration in conjunction with the reduced airspeed induced a tail stall pitching the nose down, due to the absence of tail-down force.

Factual narrative

According to the pilot, while flying in a high desert valley, he intended to perform a low pass over a remote airstrip to assess its suitability for landing in the future. The pilot reported that prior to the pass, he slowed the airplane and added full flaps. He said that in this airplane configuration, following a left turn, the "flight controls in pitch became loose as if the tail stalled," and right afterward "the nose pitched down." He reported that he added power, and that his sensation was "that the plane was flying but being pushed to the ground with no feedback from the elevator." The pilot reported that as he approached the ground, he applied back pressure but the airplane impacted the ground hard. The airplane sustained substantial damage to the right wing and fuselage. The pilot reported that there were no mechanical failures or anomalies prior, to or during the flight that would have prevented normal flight operation.

Aircraft

Registration
N272X
Reported as
Rans S-7 (S)
Category
Airplane, amateur-built
Serial number
1213601
Built
2015
Airframe hours
274
Engine
Rotax 914, 115 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Jason Sneed - Monika Bonczkova
Registered owner
Jason Sneed - Monika Bonczkova
Airworthiness certificate
Special, Experimental (Special)
Departed
UT99 · Fairfield, UT
Destination
H37 · Herlong, NV
Equipment
Electronic primary flight display, Auto-pilot, Angle of attack indicator, ADS-B, Onboard weather, Handheld GPS

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
43
Injuries
Minor
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
November 25, 2015
Seat
Front
Restraint
3-point
Flight hours
1,678.5 total · 285.7 in this make and model · 1,678.5 as pilot in command · 37.5 in the last 90 days · 25 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
54 °F, dew point 34 °F
Altimeter
30.22 inHg
Observed at
RTS, 41 nm away

Docket · 2

The files NTSB released with the investigation on February 5, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.5 MB in all.