GAA18CA311

NTSB accident investigation · Maule M5 · Lewiston, ID · May 28, 2018

Accident · Minor injuriesData collectionFinal report
Date
May 27, 2018, 18:30 local (May 28, 2018, 01:30 UTC)
Place
Lewiston, ID
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N5634YMaule M5
Defining event
Landing: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report November 5, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180527006009A
Case key
97365

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 the runway centerline and his subsequent decision to not perform a go-around, which resulted in the main landing gear contacting tall wheat and a subsequent loss of control.

Findings · 4

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: heading/courseAircraft › Aircraft oper/perf/capability · Not attained/maintainedMaule M-5-235C: 1 caseAll aircraft: 82 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotMaule M-5-235C: 11 casesAll aircraft: 9,295 casesProbable cause
Object/animal/substanceEnvironmental issues › Physical environment · Contributed to outcomeMaule M-5-235C: 1 caseAll aircraft: 224 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 aligned with the right edge of the 80-ft-wide private, grass airstrip during short final. The pilot slipped the airplane to the left, but the right main landing gear contacted the tall wheat field that bordered the runway, and the airplane began to veer right. He added that the airplane continued to the right and subsequently nosed over. The airplane sustained substantial damage to the right lift strut. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot indicated that he should have initiated an immediate go-around procedure once he realized the approach was not normal.

Factual narrative

The pilot of the tailwheel-equipped airplane reported that he was aligned with the right edge of the 80 ft. wide private, grass airstrip during short final. The pilot slipped the airplane to the left, but the right main landing gear contacted the tall wheat field that bordered the runway, and the airplane began to veer right. He added that the airplane continued to the right, and subsequently nosed over. The aircraft sustained substantial damage to the right lift strut. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot added in the NTSB Form 6120.1 section titled "Operator/Owner Safety Recommendation" that he should have initiated an immediate go around procedure once he realized the approach was not normal.

Aircraft

Registration
N5634Y
Reported as
Maule M5 (235C)
Category
Airplane
Serial number
7290C
Built
1979
Engine
Lycoming O-540-J1A5D, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 17, 2017 · 749 hours before
Departed
PVT · Lewiston, ID
Destination
PVT · Lewiston, ID
Airport
PVT · Pvt, runway W, 2,000 × 80 ft, grass/turf
Equipment
Stall warning system, Handheld GPS

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
78
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
BasicMed, With waivers/limitations
Last flight review
June 2, 2017
Seat
Right
Restraint
3-point
Flight hours
2,000 total · 700 in this make and model · 1,975 as pilot in command · 5 in the last 90 days · 3.5 in the last 30 days · 0.5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 45 °F
Altimeter
30.02 inHg
Observed at
KLWS, 4 nm away

Docket · 2

The files NTSB released with the investigation on September 25, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 572 KB 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.