NYC08TA130

NTSB accident investigation · Cessna 180 · Spartanburg, SC · March 11, 2008

Accident · No injuriesFinal report
Date
March 11, 2008, 17:15 local (21:15 UTC)
Place
Spartanburg, SC
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1044YCessna 180
Defining event
Landing: Aircraft wake turb encounter
Weather
Visual (VMC) · Day
Status
Completed · report May 6, 2009
Report
Approved by Office Director
Parties
FAA/FSDO
FAA report
20080311836539A
Case key
67651

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 encounter with wake turbulence during approach as a result of his inadequate in-flight planning.

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.

Turbulence: wake turbulenceEnvironmental issues › Conditions/weather/phenomena · Awareness of conditionCessna 180: 1 caseAll aircraft: 47 cases
Planning/preparationPersonnel issues › Task performance · PilotCessna 180: 1 caseAll aircraft: 113 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

After joining the downwind traffic pattern leg for landing on a 5,202-foot-long runway, the pilot of a Cessna 180 observed a Lear 45 taxi on to the runway for departure. As he turned the airplane on to the left base leg, he noticed that the Learjet was still on the runway. After joining the final approach leg, the Learjet started the takeoff roll and lifted off. As the pilot flared for touchdown, the accident airplane was "pushed hard" to the right, the right main landing gear touched down, then the airplane bounced and "threw to the left hard." The left wing then made ground contact, was substantially damaged, and the airplane ground-looped. According to the Aeronautical Information Manual (AIM), pilots should adjust their operations and flight path as necessary to preclude serious wake encounters. When landing behind a departing larger aircraft on the same runway, they should note where the larger aircraft's rotation point was and land well before the rotation point. The AIM also states that the flight disciplines necessary to ensure vortex avoidance during visual flight rules operations must be exercised by the pilot. Vortex visualization and avoidance procedures should be exercised by the pilot using the same degree of concern as in collision avoidance and that wake turbulence may be encountered by aircraft in flight as well as when operating on the airport movement area.

Factual narrative

History of flight

On March 11, 2008, about 1715 eastern daylight time, a Cessna 180, N1044Y, operated by the South Carolina Forest Commission, was substantially damaged during landing at Spartanburg Downtown Memorial Airport (SPA), Spartanburg, South Carolina. The certificated commercial pilot was not injured. Visual meteorological conditions prevailed, and a company visual flight rules (VFR) flight plan was filed for the local public use flight, conducted under 14 Code of Federal Regulations Part 91.

According to the pilot, after joining the downwind traffic pattern leg for landing on runway 23, he observed a "Lear 45" taxi on to the runway for departure. As he turned the airplane on to the left base leg, he noticed that the Learjet was still on the runway. After joining the final approach leg, the Learjet started the takeoff roll and lifted off. As the pilot flared for touchdown, the accident airplane was "pushed hard" to the right, the right main landing gear touched down, the airplane bounced, and "threw to the left hard." The left wing then made ground contact and the airplane ground looped.

Personnel information

According to Federal Aviation Administration (FAA) records, the pilot held a commercial pilot certificate with a rating for airplane single-engine land. His most recent FAA second-class medical certificate was issued January 30, 2008. He reported 2,030.8 hours of flight experience.

Aircraft information

According to FAA and maintenance records, the airplane was manufactured in 1957. The airplane's most recent annual inspection was completed on September 17, 2007. At the time of the inspection, the airplane had accumulated 9,620 total hours of operation and the engine had accumulated 78 hours of operation since its last overhaul.

Meteorological information

A recorded weather observation taken at Greenville-Spartanburg International Airport (GSP), Greenville, South Carolina, located approximately 13 nautical miles west of the accident site, about 22 minutes prior to the accident, included; winds at 260 degrees at 9 knots, 10 statute miles visibility, broken clouds at 7,000 feet, broken clouds at 9,000 feet, temperature 17 degrees Celsius, dew point 1 degree Celsius, and an altimeter setting of 29.99 inches of mercury.

Airport information

According to the Airport Facility Directory, SPA was a public use airport. It had one runway, oriented in a 5/23 configuration. Runway 23 was asphalt, in good condition. It was 5,202 feet long by 100 feet wide and was equipped with a vertical approach slope indicator.

Wreckage and impact information

Examination of the airplane by an FAA inspector revealed that the left wing aft spar, and two of its ribs were bent. The left wing skin was buckled and wrinkled, and the left aileron and elevator were damaged.

Additional information

According to the Aeronautical Information Manual (AIM), pilots should adjust their operations and flight path as necessary to preclude serious wake encounters. When landing behind a departing larger aircraft on the same runway, they should note where the larger aircraft's rotation point was and land well before the rotation point.

The AIM also states that government and industry groups are making concerted efforts to minimize or eliminate the hazards of trailing vortices. However, the flight disciplines necessary to ensure vortex avoidance during VFR operations must be exercised by the pilot. Vortex visualization and avoidance procedures should be exercised by the pilot using the same degree of concern as in collision avoidance and that wake turbulence may be encountered by aircraft in flight as well as when operating on the airport movement area.

Aircraft

Registration
N1044Y
Reported as
Cessna 180
Category
Airplane
Serial number
32853
Airframe hours
9,620
Engine
Continental O-470-K-17F, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Public aircraft · Part 91
Operator
South Carolina Forest Commission
Registered owner
USDA Forest Service
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 17, 2007 · 78 hours before
Departed
SPA · Spartanburg, SC
Destination
SPA
Flight plan
Company VFR
Airport
SPA · Spartanburg Downtown Memorial, runway 23, 5,202 × 100 ft, asphalt

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
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
June 29, 2007
Seat
Left
Flight hours
2,030 total · 30 in this make and model · 1,985 as pilot in command · 60 in the last 90 days · 30 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 9 knots
Visibility
10 statute miles
Lowest ceiling
9,000 ft broken
Temperature
63 °F, dew point 34 °F
Altimeter
29.98 inHg
Observed at
GSP, 13 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N1044Y · 1

Matched to the same aircraft by N-number and date.