WPR23LA152

NTSB accident investigation · Grumman G-44A · Los Alamos, NM · April 5, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
April 5, 2023, 15:00 local (21:00 UTC)
Place
Los Alamos, NM · KLAM
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N444MGrumman G-44A
Defining event
Takeoff: Loss of control on ground
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
Federal Aviation Administration
FAA report
20230405012079A
Case key
107035

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 receiving instruction’s failure to maintain directional control during the takeoff roll, resulting in a runway excursion and ground collision.

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedGrumman G-44A: 1 caseAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotGrumman G-44A: 1 caseAll aircraft: 9,295 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

Both pilots reported that during the takeoff roll, the pilot receiving instruction lost directional control of the airplane and it veered off the runway. The airplane subsequently collided with a parked unoccupied airplane. The left horizontal stabilizer and elevator sustained substantial damaged. The flight instructor reported that the airplane was not equipped with brakes at the right seat position. Both pilots reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N444M
Reported as
Grumman G-44A
Category
Airplane
Serial number
1411
Built
1945
Airframe hours
3,381.6
Engines
Lycoming GO-480 B1D, 270 horsepower, reciprocatingLycoming GO-480 B1D, 270 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 3, 2023 · 11.7 hours before
Departed
KLAM · Los Alamos, NM
Destination
KMEV · Minden, NM
Airport
KLAM · Los Alamos Airport, runway 09, 6,000 × 120 ft, asphalt
Equipment
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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
69
Injuries
None
Certificates
Flight engineer, Airline transport, Flight instructor, Commercial
Airplane ratings
Multi-engine sea, Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
May 4, 2022
Seat
Right
Flight hours
29,296 total · 2,000 in this make and model · 22,428 as pilot in command · 82 in the last 90 days · 12 in the last 30 days · 8 in the last 24 hours
Role
Pilot
Age
59
Injuries
None
Certificates
Airline transport, Commercial, Flight engineer, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
October 10, 2022
Seat
Left
Flight hours
17,600 total · 8 in this make and model · 6,100 as pilot in command · 136 in the last 90 days · 78 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
8 statute miles
Lowest ceiling
None
Temperature
41 °F, dew point 1 °F
Altimeter
30.02 inHg
Observed at
KLAM, 1 nm away
METAR
METAR KLAM 052115Z AUTO VRB04KT 8SM CLR 05/M17 A3002

Docket · 4

The files NTSB released with the investigation on August 17, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 8.8 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.