WPR21LA051

NTSB accident investigation · Maule MX7 · Moab, UT · November 12, 2020

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
November 12, 2020, 08:20 local (15:20 UTC)
Place
Moab, UT
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N721PMaule MX7
Defining event
Takeoff: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
FAA report
20201112015619A
Case key
102283

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 airplane control during takeoff from an unimproved airstrip, which resulted in a nose-over.

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.

Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedMaule MX-7-180AC: 1 caseAll aircraft: 526 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotMaule MX-7-180AC: 1 caseAll aircraft: 9,295 casesProbable cause
Terrain: rough terrainEnvironmental issues › Physical environment · Contributed to outcomeMaule MX-7-180AC: 1 caseAll aircraft: 442 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

The pilot of the tailwheel equipped airplane reported that he was departing to the north from an unimproved, backcountry airstrip with a light tailwind. During the takeoff ground roll, the tail rose and the airplane subsequently nosed over and impacted terrain. The right-wing lift struts and rudder sustained substantial damage. The pilot reported that there was no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N721P
Reported as
Maule MX7 (180AC)
Category
Airplane
Serial number
33009C
Built
2004
Airframe hours
1,400
Engine
Lycoming O-360-C4F, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · August 1, 2020 · 35 hours before
Departed
Moab, UT
Destination
U64 · Monti4cello, UT
Equipment
ADS-B, Angle of attack indicator, Electronic flight bag or handheld device, 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
34
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
December 4, 2020
Seat
Left
Restraint
3-point
Flight hours
468.8 total · 262.2 in this make and model · 391.2 as pilot in command · 28.9 in the last 90 days · 15.8 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 7 knots
Visibility
10 statute miles
Temperature
32 °F, dew point 19 °F
Altimeter
30.23 inHg
Observed at
KBDG

Docket · 2

The files NTSB released with the investigation on August 20, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.9 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.