GAA17CA021

NTSB accident investigation · Luscombe 8 · Huntingburg, IN · October 12, 2016

Accident · Minor injuriesData collectionFinal report
Date
October 12, 2016, 09:42 local (13:42 UTC)
Place
Huntingburg, IN
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N39083Luscombe 8
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report July 5, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20161012020049A
Case key
94199

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 delayed crosswind correction during the landing roll with a gusting left crosswind, which resulted in the airplane weathervaning and nosing over.

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: crosswind correctionAircraft › Aircraft oper/perf/capability · Not attained/maintainedLuscombe 8B: 1 caseAll aircraft: 184 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · PilotLuscombe 8B: 1 caseAll aircraft: 894 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotLuscombe 8B: 2 casesAll aircraft: 9,295 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Effect on operationLuscombe 8B: 1 caseAll aircraft: 1,008 cases
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Effect on operationLuscombe 8B: 1 caseAll aircraft: 1,199 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

According to the pilot in the tailwheel-equipped airplane, after a 1-hour-long local flight, he returned to the departure airport and noticed that he would be landing with a gusting, direct left crosswind. He reported that he made one low pass about 20 ft above the ground and that he "felt the airplane was steady." He accomplished a go-around and initiated an approach. He recalled that he made a three-point landing and touched down about 50 mph on the runway centerline. When the wheels touched down, a wind gust lifted the left wing, and he tried to compensate with aileron and throttle, but he "was too slow to regain control of the airplane." He reported that the left wing struck the ground and that the airplane exited the left side of the runway and nosed over. The airplane sustained substantial damage to both wings and the firewall. The METAR at the airport reported that, at the time of the accident, the wind was from 180° at 11 knots, gusting to 16 knots. The airplane landed on runway 27. According to the FAA-H-8083-3B Airplane Flying Handbook, "Crosswind After-Landing Roll," pages 8-15 and 8-16: Retaining control on the ground is a critical part of the after-landing roll, because of the weathervaning effect of the wind on the airplane. While the airplane is decelerating during the after-landing roll, more and more aileron is applied to keep the upwind wing from rising. Since the airplane is slowing down, there is less airflow around the ailerons and they become less effective. At the same time, the relative wind is becoming more of a crosswind and exerting a greater lifting force on the upwind wing. When the airplane is coming to a stop, the aileron control must be held fully toward the wind. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

According to the pilot in the tailwheel-equipped airplane, after an hour long local flight, he returned to the airport from which he had departed, and noticed that he would be landing with a gusting, direct left crosswind. He made one low pass about 20 ft. above the ground, and "I felt the airplane was steady". He accomplished a go-around and initiated an approach. He recalled that he made a three-point landing and touched down about 50 miles per hour on the runway centerline. When the wheels touched down a gust of wind lifted the left wing, and he tried to compensate with aileron and throttle, but reported that he "was too slow to regain control of the airplane". He reported that the left wing struck the ground, the airplane exited the left side of the runway and nosed over. The airplane sustained substantial damage to both wings and the fire wall. The meteorological aerodrome report at the airport, at the time of the accident, was wind 180°, at 11 kts., gusting to 16 kts. The airplane landed on runway 27. According to the FAA-H-8083-3B Airplane Flying Handbook, specifically the section entitled Crosswind After-Landing Roll, pg. 8-15 and 8-16: Retaining control on the ground is a critical part of the after-landing roll, because of the weathervaning effect of the wind on the airplane. While the airplane is decelerating during the after-landing roll, more and more aileron is applied to keep the upwind wing from rising. Since the airplane is slowing down, there is less airflow around the ailerons and they become less effective. At the same time, the relative wind is becoming more of a crosswind and exerting a greater lifting force on the upwind wing. When the airplane is coming to a stop, the aileron control must be held fully toward the wind. The pilot reported that there were no pre-accident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N39083
Reported as
Luscombe 8 (B)
Category
Airplane
Serial number
1844
Built
1941
Airframe hours
1,838
Engine
Continental C-90 12-F, 90 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 4, 2015
Departed
HNB · Huntingburg, IN
Destination
HNB · Huntingburg, IN
Airport
HNB · Huntingburg, runway 27, 5,000 × 75 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
62
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
September 8, 2015
Seat
Left
Restraint
Lap only
Flight hours
210 total · 18 in this make and model · 210 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 12 knots, gusting 16
Visibility
10 statute miles
Temperature
63 °F, dew point 46 °F
Altimeter
30.19 inHg
Observed at
KHNB

Docket · 2

The files NTSB released with the investigation on June 14, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.0 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.