GAA18CA287

NTSB accident investigation · Maule M 7 · Burnet, TX · May 19, 2018

Accident · No injuriesData collectionFinal report
Date
May 19, 2018, 11:30 local (17:30 UTC)
Place
Burnet, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N427LSMaule M 7
Defining event
Landing-flare/touchdown: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report March 18, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180519005619A
Case key
97284

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 directional control during landing in gusting wind conditions and with an incorrect flap configuration.

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedMaule M-7-235C: 6 casesAll aircraft: 3,958 casesProbable cause
Wing structure: trailing edge flapsAircraft › Aircraft structures · Incorrect use/operationMaule M-7-235C: 1 caseAll aircraft: 33 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotMaule M-7-235C: 6 casesAll aircraft: 9,295 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotMaule M-7-235C: 2 casesAll aircraft: 1,391 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Effect on operationMaule M-7-235C: 2 casesAll aircraft: 1,199 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

According to the pilot in the tailwheel-equipped airplane, he attempted a three-point landing with 48° of flaps applied in a strong, left crosswind. He reported that, after landing, the airplane lifted off again, and the left wing lifted. The pilot applied aileron and rudder inputs to counter the left crosswind, but the inputs were ineffective due to the airplane's low airspeed. He applied power to fly out of the gusting left crosswind condition, but the airplane veered right, the right wing struck the ground, and the airplane cartwheeled. The airplane sustained substantial damage to the engine mounts, both wings, and the aft fuselage. The METAR at the accident airport reported, about the time of the accident, wind from 160° at 12 knots, gusting to 25 knots. The highest wind reported during the observation period was from 190° at 31 knots. The pilot landed the airplane on runway 19. According to the manufacturer's airplane flight manual, the maximum demonstrated crosswind component was 12 knots, and the flap extension should be limited to 0°. The pilot reported that the accident could have been prevented if he had attempted a wheel landing with less than full flaps. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

According to the pilot in the tailwheel-equipped airplane, he attempted a three-point landing with 48° of flaps applied, in a strong crosswind from the left. He reported that after landing, the airplane lifted off again, and the left wing lifted. The pilot applied aileron and rudder inputs to counter the left crosswind, but he recalled that the inputs were ineffective at the airplane's low airspeed. He applied power to fly out of the gusting left crosswind condition, but the airplane veered to the right and the right wing struck the ground, and the airplane cartwheeled. The airplane sustained substantial damage to engine mounts, both wings, and the aft fuselage. The METAR at the accident airport about the time of the accident was reported as being from 160° at 12 knots and gusting to 25 knots. The highest wind reported during the observation period was from 190° at 31 knots. The pilot landed on runway 19. According to the manufacturer's airplane flight manual, the maximum demonstrated crosswind component is 12 knots and the flap extension should be limited to 0°. Per the National Transportation Safety Board, Pilot Aircraft Accident Report, in the Recommendation section, the pilot asserted that the accident could have been prevented if he had attempted a wheel landing with less than full flaps. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N427LS
Reported as
Maule M 7 (235C)
Category
Airplane
Serial number
25057C
Built
2001
Airframe hours
990
Engine
Lycoming IO-540-W1A5, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 26, 2017
Departed
T82 · Fredericksburg, TX
Destination
BMQ · Burnet, TX
Airport
BMQ · Burnet Muni Kate Craddock Fiel, runway 19, 5,000 × 75 ft, asphalt
Equipment
Electronic primary flight display, Stall warning system, ADS-B, Auto-pilot, Electronic multifunction display

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
64
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
July 15, 2016
Seat
Left
Restraint
3-point
Flight hours
2,947 total · 685 in this make and model · 2,661 as pilot in command · 37 in the last 90 days · 15 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 12 knots, gusting 25
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 64 °F
Altimeter
29.89 inHg
Observed at
KBMQ

Docket · 2

The files NTSB released with the investigation on October 4, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.8 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.