CEN14TA116

NTSB accident investigation · Autogyro Mtosport · Spring, TX · January 16, 2014

Accident · Minor injuriesFinal report
Date
January 16, 2014, 11:40 local (17:40 UTC)
Place
Spring, TX
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N250TXAutogyro Mtosport
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report April 23, 2014
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Houston FSDO
FAA report
20140116000829A
Case key
88701

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 pilot’s failure to maintain the gyroplane’s rotor control during the landing roll in gusting crosswind conditions.

Findings · 5

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: incorrect action performancePersonnel issues › Action/decision · PilotAuto Gyro MTOSPORT: 1 caseAll aircraft: 1,386 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeAuto Gyro MTOSPORT: 1 caseAll aircraft: 1,008 cases
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeAuto Gyro MTOSPORT: 1 caseAll aircraft: 1,199 cases
Performance/control parametersAircraft › Aircraft oper/perf/capability · Not attained/maintainedAuto Gyro MTOSPORT: 1 caseAll aircraft: 1,269 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 stated that, as he approached the runway, the tower controller reported that the wind was 210 degrees at 11 knots, gusting to 19 knots. He performed a go-around due to the wind gusts blowing the gyroplane off course. He was then cleared to land on the parallel runway. The pilot reported that a quartering crosswind existed as he flew the approach; however, he landed the gyroplane without incident. As the pilot was reaching forward to change the pneumatic mode selector button from the "flight" to the "brake" position, a strong westerly wind gust lifted the gyroplane. The right wheel came off the ground, which caused the main rotor blade to strike the runway. The pilot attempted to straighten the gyroplane, but it veered off the runway and rolled onto its right side, which resulted in substantial damage to the empennage and main rotor. The pilot reported no preaccident mechanical malfunctions or failures with the gyroplane that would have precluded normal operation. The calculated crosswind component of 10 knots was below the allowable maximum landing crosswind component of 20 knots. The gyroplane's flight manual states that, after landing, "use lateral control into wind to maintain rotor disc in level flight. Adjust lateral control input as rotor speed decays" before changing the pneumatic mode selector to the "brake" position.

Factual narrative

On January 16, 2014, about 1140 central standard time, an AutoGyro MTOsport gyroplane, N250TX, sustained substantial damage during landing roll when it veered off the runway and rolled over after its main rotor struck the runway at the David Wayne Hooks Memorial Airport (DWH), Spring, Texas. The pilot and one passenger received minor injuries. The gyroplane was registered to and operated by the City of Tomball, Texas, as a public use aircraft. Visual meteorological conditions prevailed at the time of the accident, and no flight plan was filed. The gyroplane departed DWH at 1030 on a local flight. The pilot stated that the control tower reported the wind was 210 degrees at 11 knots gusting to 19 knots as he attempted to land on runway 17L (3,987 feet by 35 feet, asphalt). He performed a go-around due to the wind gusts blowing the gyrocopter off course, and he was cleared to land on runway 17R (7,009 feet by 100 feet, asphalt). The pilot reported a quartering crosswind as he flew the approach to 17R; however, he landed the gyroplane without incident. He reported that as he was reaching forward to change the pneumatic mode selector button from "Flight" to "Brake," a strong gust of wind from the west lifted the gyrocopter. The right wheel came off the ground allowing the main rotor blade to strike the runway surface. The pilot attempted to straighten the gyroplane, but it veered off the runway and rolled onto its right side, resulting in substantial damage to the empennage and main rotor. The pilot reported no preaccident mechanical malfunctions or failures with the gyroplane that would have precluded normal operation. The flight manual for the gyroplane state that the maximum crosswind component for take-off and landings is 20 knots. The maximum tailwind component for take-off and landing is 5 knots. The maximum wind speed or gust intensity is 40 knots. The calculated crosswind component during the landing was about 10 knots. The flight manual for the gyroplane lists the following "After Landing" procedures: 1. Control stick full forward to level-off rotor disc, at latest when rotor speed leaves green arc! Be prepared for reduced rotor drag! 2. Use lateral control into wind to maintain rotor disc in level attitude. Adjust lateral control input as rotor speed decays. 3. Bring pneumatic mode selector to BRAKE position and return to wheel brake with left hand. 4. Apply rotor brake pressure by using AFT TRIM. Monitor pressure gauge. 5. Taxi carefully, preferably not above walking speed and mind high center of gravity when taking turns. 6. Do not vacate gyroplane until engine and rotor is at a complete stop.

Aircraft

Registration
N250TX
Reported as
Autogyro Mtosport
Category
Gyroplane
Serial number
US10S01
Built
2010
Airframe hours
522
Engine
Rotax 912 ULS, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Public aircraft - local · Public use
Operator
City Of Tomball
Registered owner
City Of Tomball
Airworthiness certificate
Special, Experimental (Special)
Departed
DWH · Spring, TX
Destination
DWH · Spring, TX
Airport
DWH · David Wayne Hooks Memorial, runway 17R, 7,009 × 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
42
Injuries
None
Certificate
Student
Medical
Class 3, Without waivers/limitations
Seat
Front
Flight hours
228 total · 155 in this make and model · 16 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 17 knots, gusting 24
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 37 °F
Altimeter
30.14 inHg
Observed at
DWH

Docket · 4

The files NTSB released with the investigation on February 6, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.9 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.