GAA17CA001

NTSB accident investigation · Bellanca 7GCBC · Fairbanks, AK · October 1, 2016

Accident · Minor injuriesData collectionFinal report
Date
October 1, 2016, 13:46 local (21:46 UTC)
Place
Fairbanks, AK
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8922Bellanca 7GCBC
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
20161001019739A
Case key
94129

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 improper crosswind correction, which resulted in a loss of pitch control and nose-over.

Findings · 4

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotBellanca 7GCBC: 33 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedBellanca 7GCBC: 3 casesAll aircraft: 526 casesProbable cause
Performance/control parameters: crosswind correctionAircraft › Aircraft oper/perf/capability · Not attained/maintainedBellanca 7GCBC: 2 casesAll aircraft: 184 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Effect on equipmentBellanca 7GCBC: 4 casesAll aircraft: 1,008 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

According to the pilot of the tailwheel-equipped airplane, during the approach, he applied carburetor heat, set airspeed to 70 knots, and set the flaps to 1 notch less than full. He reported that the flare and touchdown on the gravel runway was "very smooth." However, he recalled that, when the tailwheel contacted the ground, the right wing ascended, and the left wing dragged across the ground. The pilot reported that the left wing strut failed and that the airplane nosed over and came to rest on the gravel runway. Additionally, the pilot noted that, after the accident, the wind sock indicated a direct crosswind from the right and varied between three-quarters to completely full. However, postaccident photographs of the airplane revealed that the airplane's left wing sustained damage to its top side. The bottom side of the left wing, the wing tip, and the wing strut revealed no indication of runway contact. The photographs revealed substantial damage to the horizontal stabilizer and the rudder. 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 of the tailwheel-equipped airplane, during the approach he applied carburetor heat, set airspeed to 70 kts. and set the flaps to 1 notch less than full. He reported that the flare and touch down on the gravel runway was "very smooth". However, he recalled that when the tailwheel contacted the ground, the right wing ascended and the left wing was dragged across the ground. The pilot reported that the left wing strut failed, the airplane nosed over and came to rest on the gravel runway. Additionally, the pilot noted that after the accident, the wind sock indicated a direct crosswind from the right and varied between ¾ to completely full. However, post-accident photographs of the airplane reveal that the left wing of the airplane sustained damage to the top side of the wing. The bottom side of the left wing, the wing tip and the wing strut revealed no indication of runway contact. Photographs reveal substantial damage to the horizontal stabilizer and the rudder. The pilot reported that there were no pre-accident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N8922
Reported as
Bellanca 7GCBC (NO SERIES)
Category
Airplane
Serial number
493-73
Built
1973
Airframe hours
1,843
Engine
Lycoming O-320, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal; Standard, Aerobatic; Standard, Utility
Last inspection
Annual · April 27, 2016
Departed
FAI · Fairbanks, AK
Destination
FAI · Fairbanks, AK
Airport
FAI · Fairbanks Intl, runway 20, 2,900 × 75 ft, gravel
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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
61
Injuries
None
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
June 13, 2016
Seat
Front
Restraint
5-point
Flight hours
202 total · 107 in this make and model · 144 as pilot in command · 5 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 9 knots
Visibility
10 statute miles
Temperature
55 °F, dew point 27 °F
Altimeter
29.81 inHg
Observed at
PAFA, 1 nm away

Docket · 3

The files NTSB released with the investigation on June 14, 2017, 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.