CEN14LA361

NTSB accident investigation · Piper PA 18-150 · Monte Vista, CO · July 12, 2014

Accident · No injuriesLimited investigationFinal report
Date
July 11, 2014, 19:15 local (Jul 12, 2014, 01:15 UTC)
Place
Monte Vista, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N91106Piper PA 18-150
Defining event
Landing-aborted after touchdown: Dragged wing/rotor/float/other
Weather
Visual (VMC) · Day
Status
Completed · report April 20, 2016
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Denver FSDO
FAA report
20140711012009A
Case key
89659

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 and his exceedance of the airplane’s critical angle of attack during a go-around following impact with a barley crop, which resulted in an aerodynamic stall. Contributing to the accident was the pilot’s decision to conduct a shallow approach with the airplane facing directly into the setting sun, which resulted in sun glare.

Findings · 6

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: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18-150: 24 casesAll aircraft: 1,681 casesProbable cause
Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18-150: 10 casesAll aircraft: 990 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-18-150: 160 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Incorrect use/operationPiper PA-18-150: 8 casesAll aircraft: 809 casesProbable cause
Light condition: glareEnvironmental issues › Conditions/weather/phenomena · Effect on personnelPiper PA-18-150: 1 caseAll aircraft: 109 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 private pilot was conducting a personal flight and attempting to land the airplane. He reported that, due to equipment obstructing the 2,600-ft-long dirt runway at midfield, he conducted a shallow approach to land on the eastern half of the shortened runway with the airplane pointed west almost directly into the setting sun, which resulted in sun glare. When the airplane was about 100 ft east of the end of the runway, the main landing gear impacted a 2-ft-tall barley crop, which slowed the airplane. The pilot initiated a go-around, but he did not attain sufficient speed to maintain flight and exceeded the airplane's critical angle-of-attack. The airplane subsequently stalled, impacted terrain on the edge of the runway, and then came to rest inverted, which resulted in substantial damage to both wings, the fuselage, and the vertical tail surfaces. The pilot was not injured and exited the airplane without assistance. The pilot reported that there were no preaccident mechanical deficiencies with the airplane or engine that would have precluded normal operation.

Factual narrative

On July 11, 2014, about 1915 mountain daylight time, a Piper PA-18-150 single engine airplane, N91106, was substantially damaged during landing at Van Treese Airport (0CO9), Monte Vista, Colorado. The pilot was not injured. The airplane was registered to Van Treese Farms, Inc.; and operated by a private individual. Visual meteorological conditions (VMC) prevailed at the time of the accident and a flight plan had not been filed for the 14 Code of Federal Regulations Part 91 personal flight. The airplane had departed from Pagosa Springs Airport (PSO), Pagosa Springs, Colorado, at 1820, and was destined for 0CO9. There was equipment obstructing the 2,600 foot long dirt runway at midfield and the pilot was making a shallow approach to land on the eastern half of the shortened runway while pointed to the west almost directly into the setting sun. When the airplane was about 100 feet east from the end of the runway the main landing gear impacted a two-foot tall green barley crop which slowed the airplane. The pilot began a go-around maneuver, but was unable to maintain flying speed. The airplane stalled and impacted terrain on the edge of the runway, coming to rest inverted with resulting substantial damage to both wings, the fuselage, and the vertical tail surfaces. There was no postimpact fire and the pilot was able to exit the airplane without assistance. The pilot reported there were no preaccident mechanical deficiencies with the airplane or engine that would have precluded normal operation. He added that he should have used a steeper approach to land, and should have maintained clearance from the barley crop obstructions in the final approach path. He added that he should have considered using a longer runway at a nearby airport, or considered using a different runway that was not oriented directly into the glare of the setting sun.

Aircraft

Registration
N91106
Reported as
Piper PA 18-150
Category
Airplane
Serial number
18-8109069
Built
1981
Airframe hours
2,477
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · March 19, 2014 · 39 hours before
Departed
PSO · Pagosa Springs, CO
Destination
0CO9 · Monte Vista, CO
Airport
0CO9 · Van Treese, runway W, 2,600 × 50 ft, dirt
Equipment
Stall warning system

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
19
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
June 26, 2014
Seat
Front
Restraint
4-point
Flight hours
166 total · 36 in this make and model · 120 as pilot in command · 59 in the last 90 days · 20 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
140° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 45 °F
Altimeter
30.18 inHg
Observed at
KALS, 16 nm away

Docket · 4

The files NTSB released with the investigation on March 7, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.3 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.