WPR23LA361

NTSB accident investigation · Gleim James M MG-1 · Madera, CA · September 28, 2023

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
September 28, 2023, 16:07 local (23:07 UTC)
Place
Madera, CA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N126GMGleim James M MG-1
Defining event
Landing-landing roll: 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
Parties
FAA
FAA report
20230928016259A
Case key
193193

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

An emergency landing on uneven terrain that resulted in the loss of directional control during landing.

Findings · 2

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotGleim James M MG-1: 1 caseAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedGleim James M MG-1: 1 caseAll aircraft: 3,958 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 reported that during level flight, the airplane canopy suddenly opened, so he elected to land the airplane on a dirt road ahead. On approach to the dirt road, he encountered power lines and climbed to avoid them, then he continued the emergency approach to the road. When the airplane touched down on the dirt road, it veered aggressively to the left, becoming airborne momentarily, then landing in a ditch and nosing over before coming to rest inverted. The airplane sustained substantial damage to the wings and fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N126GM
Reported as
Gleim James M MG-1
Category
Airplane, amateur-built
Serial number
001
Airframe hours
90.6
Engine
Jabiru 3300, 120 hp, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · December 7, 2022
Departed
E79 · Fresno, CA
Destination
KMAE · Madera, CA
Equipment
Electronic primary flight display, 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
45
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
May 15, 2023
Seat
Left
Restraint
4-point
Flight hours
712.2 total · 8.6 in this make and model · 536.5 as pilot in command · 11.9 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 11 knots, gusting 17
Visibility
10 statute miles
Lowest ceiling
None
Temperature
86 °F, dew point 54 °F
Altimeter
29.83 inHg
Observed at
KMAE, 6 nm away
METAR
KMAE 282253Z AUTO 31011G17KT 10SM CLR 30/12 A2983 RMK AO2 SLP099 T03000117

Docket · 2

The files NTSB released with the investigation on May 6, 2024, 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.