NYC08LA021

NTSB accident investigation · Luscombe 8A · Pensacola, FL · October 26, 2007

Accident · No injuriesLimited investigationFinal report
Date
October 26, 2007, 15:45 local (20:45 UTC)
Place
Pensacola, FL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N2099KLuscombe 8A
Weather
Visual (VMC) · Day
Status
Completed · report September 26, 2008
Report
Approved by Office Director
Parties
FAA/FSDO
Case key
66969

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 fatigue fracture of the tail wheel spring during takeoff.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightTakeoff
Landing gear,tailwheel assembly - fatigueCause
In flight collision with objectTakeoff - aborted
Object - tree(s)

Analysis

During takeoff, the tail wheel airplane was about 2 feet in the air when it suddenly veered to the left. The pilot attempted to land on the remaining runway; however, the airplane continued left and impacted trees to the left of the runway. Postaccident examination of the airplane revealed the tail wheel leaf spring was separated from the tail wheel assembly, and the wheel was "jammed" against the rudder. The fracture surface appeared to be a fatigue failure. The airplane's most recent annual inspection was completed about 9 months prior to the accident, with no anomalies noted. Checking the tail wheel spring was a requirement during an annual inspection. Without removing the outer clip, a pilot would not be able to check the spring during a preflight inspection.

Factual narrative

On October 26, 2007, at 1545 central daylight time, a Luscombe 8A, N2099K, was substantially damaged during takeoff from Ferguson Airport (82J), Pensacola, Florida. The certificated commercial pilot and passenger were not injured. Visual meteorological conditions prevailed and no flight plan was filed for the local flight conducted under the provisions of 14 Code of Federal Regulations Part 91.

The pilot departed from runway 36 at 82J, and was about 2 feet in the air when the airplane suddenly veered to the left. The pilot attempted to land on the remaining runway; however, the airplane continued left and impacted trees to the left of the runway.

Postaccident examination of the airplane revealed that the tail wheel leaf spring was separated from the tail wheel assembly, and the wheel was "jammed" against the rudder. According to the Federal Aviation Administration (FAA) inspector who examined the airplane, the fracture surface appeared to be a fatigue failure.

The tail wheel assembly attached to the fuselage by two leaf springs, and two connector springs and chains (one on the right side and one on the left). A bolt and nut secured the leaf springs to the tail wheel assembly, and a clamp was installed over the connection. The leaf spring fracture occurred in the area that would have been under the clamp.

The airplane's most recent annual inspection was completed on January 27, 2007, with no anomalies noted.

According to a representative of the company that owns the Type Certificate for the airplane, checking the tail wheel spring was a requirement during an annual inspection. Without removing the outer clip (secured by a bolt and nut), a pilot would not be able to check the spring during a preflight inspection.

Aircraft

Registration
N2099K
Reported as
Luscombe 8A
Category
Airplane
Serial number
4826
Airframe hours
2,805
Engine
Continental A-658, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
John Jenista
Registered owner
James Stallings
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 1, 2007
Departed
82J · Pensacola, FL
Airport
82J · Ferguson Airport, runway 36, 3,200 × 200 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
50
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
January 1, 2007
Seat
Rear
Flight hours
1,406 total · 3 in this make and model · 1,350 as pilot in command · 103 in the last 90 days · 30 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 48 °F
Altimeter
30.06 inHg
Observed at
PNS, 10 nm away

Other investigations on N2099K · 1

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