GAA18CA192

NTSB accident investigation · Cub Crafters CC18-180 · Prescott, AZ · March 31, 2018

Accident · No injuriesData collectionFinal report
Date
March 31, 2018, 11:27 local (18:27 UTC)
Place
Prescott, AZ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N540DMCub Crafters CC18-180
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report July 5, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
Case key
96964

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 student pilot’s failure to maintain directional control during landing after touching down with the left brake engaged. Contributing to the accident was the flight instructor’s delayed remedial action.

Findings · 5

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/maintainedCub Crafters CC18-180: 7 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotCub Crafters CC18-180: 8 casesAll aircraft: 9,295 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotCub Crafters CC18-180: 3 casesAll aircraft: 894 casesProbable cause
Action: lack of actionPersonnel issues › Action/decision · Student/instructed pilotCub Crafters CC18-180: 1 caseAll aircraft: 792 cases
Landing gear system: brakeAircraft › Aircraft systems · Incorrect use/operationCub Crafters CC18-180: 2 casesAll aircraft: 297 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 flight instructor reported that, during a training flight, upon landing, the tailwheel-equipped airplane bounced slightly. Subsequently, when the airplane touched back down, it veered to the left. He added that the student did not react immediately, so he added power and right rudder to correct. The airplane exited the left side of the runway, the instructor added full right brake to avoid a visual approach slope indicator (VASI) light, and the airplane ground looped to the right. The flight instructor added that the student had apparently touched down after the first bounce with the left brake engaged. The airplane sustained substantial damage to the left wing and aileron. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Factual narrative

The flight instructor reported that, during a training flight, upon landing, the tailwheel-equipped airplane bounced slightly. Subsequently, when the airplane touched back down it veered to the left. He added that, the student did not react immediately, so he added power and right rudder to correct. The airplane exited the left side of the runway, he added full right brake to avoid a visual approach slope indicator (VASI) light, and the airplane ground looped to the right. The flight instructor added that the student had apparently touched down after the first bounce with the left brake engaged. The airplane sustained substantial damage to the left wing and aileron. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N540DM
Reported as
Cub Crafters CC18-180
Category
Airplane
Serial number
CC18-0027
Built
2008
Airframe hours
328
Engine
Lycoming O-360-C1G, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 14, 2008
Departed
PRC · Prescott, AZ
Destination
PRC · Prescott, AZ
Airport
PRC · Ernest A Love Field, runway 21R, 4,846 × 60 ft, asphalt
Equipment
None

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
67
Injuries
None
Certificates
Airline transport, Commercial, Flight instructor
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
June 3, 2016
Seat
Rear
Restraint
4-point
Flight hours
23,870 total · 55 in this make and model · 18,906 as pilot in command · 60 in the last 90 days · 48 in the last 30 days · 4 in the last 24 hours
Role
Student pilot
Age
22
Injuries
None
Certificate
Student
Medical
Class 3, Without waivers/limitations
Seat
Front
Restraint
4-point
Flight hours
66.4 total · 31.6 in this make and model · 31.6 in the last 90 days · 18.1 in the last 30 days · 1.1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 16 °F
Altimeter
30.17 inHg
Observed at
KPRC

Docket · 3

The files NTSB released with the investigation on May 23, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 MB in all.