GAA17CA033

NTSB accident investigation · Stinson 108 3 · Boulder City, NV · October 19, 2016

Accident · Minor injuriesData collectionFinal report
Date
October 19, 2016, 11:44 local (18:44 UTC)
Place
Boulder City, NV
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N818CStinson 108 3
Defining event
Takeoff: Unknown or undetermined
Weather
Visual (VMC) · Day
Status
Completed · report April 4, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20161019020979A
Case key
94251

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

The pilot’s failure to ensure that the aerial pickup towline was not entangled around the horizontal stabilizer after the banner pickup.

Findings · 3

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.

Planning/preparationPersonnel issues › Task performance · PilotStinson 108-3: 1 caseAll aircraft: 113 casesProbable cause
Performance/control parametersAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleStinson 108-3: 2 casesAll aircraft: 1,269 casesProbable cause
Object/animal/substanceEnvironmental issues › Physical environment · Effect on operationStinson 108-3: 2 casesAll aircraft: 224 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

In a telephone interview with the National Transportation Safety Board (NTSB) Investigator-in-Charge, the pilot stated that, during the initial climb after an aerial pickup of a banner, the towline became entangled with the right horizontal stabilizer and the right elevator. Subsequently the airplane pitched down, impacted the ground, and nosed over. A postaccident examination revealed substantial damage to the right-wing lift strut and the empennage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. After multiple requests, the pilot did not return the NTSB Form 6120.1 Pilot/Operator Aircraft Accident/Incident Report.

Factual narrative

In a telephone interview with the National Transportation Safety Board (NTSB) Investigator-in-Charge (IIC), the pilot stated that during the initial climb after an aerial pickup of a banner, the towline cable became entangled with the right horizontal stabilizer and the right elevator. Subsequently the airplane pitched down, impacted the ground, and nosed over. A postaccident examination revealed substantial damage to the right-wing lift strut and the empennage. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. After multiple requests, the pilot did not return the NTSB Form 6120.1 Pilot/Operator Aircraft Accident/Incident Report.

Aircraft

Registration
N818C
Reported as
Stinson 108 3 (UNDESIGNAT)
Category
Airplane
Serial number
108-3818
Built
1948
Engine
Lycoming O-540-E4B5, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Banner tow · Part 91
Airworthiness certificate
Special, Restricted (Special)
Departed
BVU · Boulder City, NV
Destination
BVU · Boulder City, NV
Flight plan
Unknown
Airport
BVU · Boulder City Muni
Equipment
Unknown

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
57
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Seat
Single

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 14 knots
Visibility
10 statute miles
Temperature
72 °F, dew point 23 °F
Altimeter
30.23 inHg
Observed at
KBVU

Docket · 2

The files NTSB released with the investigation on March 16, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 794 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.