CEN12CA130

NTSB accident investigation · Maule M-7-235 · Eldorado, TX · December 28, 2011

Accident · No injuriesData collectionFinal report
Date
December 28, 2011, 11:20 local (16:20 UTC)
Place
Eldorado, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6129TMaule M-7-235
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report March 8, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA FSDO
FAA report
20111228030099A
Case key
82662

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 inadequate in-flight planning and decision-making, which resulted in a loss of control during a crosswind landing.

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.

Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeMaule M-7-235A: 1 caseAll aircraft: 1,199 cases
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeMaule M-7-235A: 1 caseAll aircraft: 1,008 cases

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

As the flight neared the destination airport, the pilot obtained information from the nearest weather reporting facility, located about 33 miles away, which indicated that there would be a left crosswind component of about 15 knots with gusts to 20 knots on the landing runway. On final approach, the pilot noted that the windsock appeared to be extended at a 45 degree angle to the runway. He made his final approach with the left wing down and slightly more airspeed than usual to compensate for the crosswind. After both main wheels were on the runway, the pilot felt the left wing lift, even with full left aileron and opposite rudder inputs. He also felt that the airplane's right wheel brake was "spongy." As the wing lifted, the airplane began to ground loop to the left, skidded off the runway and impacted terrain, which resulted in substantial damage to the wings. After the pilot exited the airplane, he noted that the windsock was fully extended perpendicular to the runway. The pilot stated that he was very experienced in crosswind landings and that he should not have relied on a distant weather facility report; rather he should have made a full pattern approach to check the windsock more closely and better assess the local wind before landing. He stated that if he had been aware of how high the crosswind actually was, he would not have landed at this airport.

Factual narrative

***This report was modified on February 24, 2012. Please see the docket for this accident to view the original report.*** After checking the weather for the route of flight, the pilot initiated the aerial observation flight to survey pipelines in his tail wheel equipped airplane. The flight was uneventful and the pilot set up to land at his planned airport to refuel. Prior to making the approach to land, the pilot checked the nearest weather reporting facility (about 33 miles to the southwest). The facility reported the wind from 270 degrees at 15 knots, with gusts of 20 knots. The pilot made preparations for a crosswind landing on the runway bearing 350 degrees. On final approach, the pilot noted that the windsock appeared to be extended at a 45 degree angle to the runway. He made his final approach with the upwind wing down and a bit more airspeed than usual to compensate for the crosswind. After both main wheels were on the runway, the pilot felt the upwind wing lift, even with full left aileron and opposite rudder inputs. He also felt that the airplane's right wheel brake was "spongy." As the wing lifted, the airplane began to ground loop to the left and the pilot thought that it was too late to initiate a go-around. The airplane then skidded off the runway, impacting terrain, which resulted in substantial damage to the wings. After the pilot exited the airplane, he noted that the windsock was fully extended perpendicular to the runway. After the accident, the pilot stated that he was very experienced in crosswind landings and that he should have not relied on a distant weather facility report. He stated that he should have made a full pattern approach to check the windsock more closely and better assess the local wind before landing. He stated that if he had been aware of how high the crosswind actually was, he would not have landed at this airport.

Aircraft

Registration
N6129T
Reported as
Maule M-7-235
Category
Airplane
Serial number
4053C
Airframe hours
5,104
Engine
Lycoming IO-540 SER, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial observation · Part 91
Operator
Taf Aerial Services LLC
Registered owner
Taf Aerial Services LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 1, 2011
Departed
HDO · Hondo, TX
Destination
27R · Eldorado, TX
Flight plan
Unknown
Airport
27R · Eldorado Airport, runway 35, 4,300 × 60 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
57
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 4, 2011
Seat
Left
Flight hours
5,364 total · 4,896 in this make and model · 5,186 as pilot in command · 237 in the last 90 days · 83 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 15 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F
Observed at
OZA, 33 nm away

Docket · 2

The files NTSB released with the investigation on January 19, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.9 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.