GAA18CA438

NTSB accident investigation · Mooney M20E · Great Falls, MT · July 22, 2018

Accident · No injuriesData collectionFinal report
Date
July 22, 2018, 09:15 local (15:15 UTC)
Place
Great Falls, MT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7845VMooney M20E
Defining event
Landing: Landing gear not configured
Weather
Visual (VMC) · Day
Status
Completed · report March 18, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180722017589A
Case key
97881

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 flight instructor’s incorrect use of the landing gear system and his and the pilot’s failure to ensure that the landing gear was extended, which resulted in a gear-up landing. Contributing to the accident was the flight instructor’s unfamiliarity with the airplane.

Findings · 6

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: configurationAircraft › Aircraft oper/perf/capability · Incorrect use/operationMooney M20E: 1 caseAll aircraft: 80 casesProbable cause
Landing gear system: gear extension and retract sysAircraft › Aircraft systems · Incorrect use/operationMooney M20E: 3 casesAll aircraft: 416 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · Instructor/check pilotMooney M20E: 2 casesAll aircraft: 1,391 casesProbable cause
Attention/monitoring: monitoring equip/instrumentsPersonnel issues › Psychological · Student/instructed pilotMooney M20E: 1 caseAll aircraft: 142 casesProbable cause
Attention/monitoring: monitoring equip/instrumentsPersonnel issues › Psychological · Instructor/check pilotMooney M20E: 1 caseAll aircraft: 142 casesProbable cause
Knowledge: knowledge of equipmentPersonnel issues › Experience/knowledge · Instructor/check pilotMooney M20E: 1 caseAll aircraft: 69 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 they were conducting a "familiarization/instructional flight" in the retractable-gear airplane and that this was his first flight with the instructor. After practicing commercial maneuvers, they entered the traffic pattern, and the instructor wanted to acquaint himself with the "Johnson bar"-style landing gear system. The "Johnson bar" (manually operated retraction/extension handle) is pulled up to extend the landing gear and pushed down to retract the landing gear. The instructor then pushed the Johnson bar down in what he thought was the landing gear extended position. The pilot added that, although he twice verified that the landing gear was extended, the airplane landed with the landing gear retracted. The airplane sustained substantial damage to the fuselage. The flight instructor reported that the flight was briefed as a "familiarization" flight because he was unfamiliar with the airplane. He added that the pilot had time in the airplane, and the intent was for him to become familiar with the performance and limitations of the airplane before he began conducting commercial training for the pilot. He added that he became distracted with the operation of the flaps and did not verify the landing gear position indicator lights located on the left side of the cockpit. He also added that he did not hear the gear warning horn. The pilot and flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Factual narrative

The pilot reported that they were conducting a "familiarization/instructional flight", in the retractable-gear airplane, and that this was his first flight with the instructor. After practicing commercial maneuvers, they entered the traffic pattern and the instructor wanted to acquaint himself with the "Johnson bar" style landing gear system. The "Johnson bar" (manually operated retraction/extension handle) is pulled up to extend the landing gear and pushed down to retract the landing gear. The instructor then placed the Johnson bar down, in what he thought was the landing gear extended position. The pilot added that although he twice verified that the landing gear was extended, the airplane landed with the landing gear retracted. The airplane sustained substantial damage to the fuselage. The flight instructor reported that, the flight was briefed as a "familiarization" flight because he was unfamiliar with the airplane. He added, the pilot had time in the airplane, and the intent was for him to become familiar with the performance and limitations of the airplane before he began conducting commercial training for the pilot. He added that he became distracted with the operation of the flaps and did not verify the landing gear position indicator lights located on the left side of the cockpit. He also added that he did not hear the gear warning horn. The pilot and flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N7845V
Reported as
Mooney M20E (No Series)
Category
Airplane
Serial number
466
Built
1964
Airframe hours
6,447.87
Engine
Lycoming IO-360-A2A, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 12, 2018
Departed
GTF · Great Falls, MT
Destination
GTF · Great Falls, MT
Airport
GTF · Great Falls Intl, runway 21, 10,502 × 150 ft, asphalt
Equipment
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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
27
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
February 1, 2018
Seat
Left
Restraint
Lap only
Flight hours
300.7 total · 24.3 in this make and model · 300.7 as pilot in command · 36.5 in the last 90 days · 19.7 in the last 30 days
Role
Flight instructor
Age
55
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
February 18, 2017
Seat
Right
Restraint
Lap only
Flight hours
2,485 total · 0 in this make and model · 2,388 as pilot in command · 20 in the last 90 days · 10 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 39 °F
Altimeter
30.25 inHg
Observed at
KGTF, 1 nm away

Docket · 3

The files NTSB released with the investigation on October 30, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.6 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.

Other investigations on N7845V · 1

Matched to the same aircraft by N-number and date.