20100119027289A

Accident · Substantial damage

FAA accident report · Luscombe 8A · Madison, GA · January 19, 2010

Date
January 19, 2010 · 12:25 local
Place
Madison, GA
Airport
Madison Municipal Airport
Phase of flight
Landing: Rollout
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N2750K
NTSB investigation
NTSBERA10LA121
Reported as
Luscombe 8A
Reported engine
Continental A&C65 series
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Commercial pilot
Pilot’s flight hours
1,316 total250 in this make and model6 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

According to the pilot, Mr. Leithead, he was on a VFR flight in N2750K from monticello sky ranch airport (GA06) to Madison Municipal Airport (52A) on January 19, 2010. He entered a left hand pattern for rwy 14 and observed the windsock was down. His approach speed was 60 mph and touchdown speed was 45 mph near the numbers. He slowed to a taxi speed of 10 to 15 mph a thousand feet down the runway. Mr. Leithead said that before making a right turn onto the taxiway to the ramp, the nose veered right and he corrected and then nose moved sharply to the left and he corrected with brakes and full right rudder. The tail continued around toward the right and nose to the left when the main right gear collapsed. The airplane continued off the runway, the right wingtip hit the ground and the tail wheel separated at the leaf spring/bolt connection. The airplane came to rest a few feet off the runway with the nose pointing to the west. During a phone interview on January 19, Mr. Leithead said that he believed that a small gust of wind may have caused the airplane to veer. During the on-site visit, Mr. Leithead said he believed that the tail wheel spring broke, which caused the tail to veer abruptly. On site investigation showed tire marks on the runway that matched the movement of N2750K off the runway. Squiggly tire marks from what appear to be the tail wheel, show that the tail had swung around to the right, 180 degrees from the runway heading prior to leaving the runway. The right main wheel left tire marks until the right main gear collapsed; the right main gear removed some pavement. The marks are consistent with the airplane position of 180 degrees from runway heading just prior to moving off the runway. There are no scrapes in the runway where the tailwheel tire marks are; however, there are divots in the ground three feet and fifteen feet off the runway. The tail came to rest in the fifteen foot divot. The tailwheel assembly has been sent to the NTSB for further analysis. A preliminary review by their metallurgist indicates that there may be a small fatigue region in the leaf spring. Findings from a more detailed analysis will be given at a later date. There is no weather reporting at Madison Municipal Airport (52A); however, at green county regional airport (3J7) 16.3 NM to the east, the winds were out of the west at four to seven knots near the time of the accident of 12:25 EST. At athens/ben epps airport, 21.5 NM to the north northeast, winds were out of the west northwest at 11 knots 34 minutes prior to the accident and seven knots gusting to 16 knots 26 minutes after the accident. At balwin county airport, 29.2 NM to the southeast, the winds were out of the west northwest at three to five knots.

As the FAA filed it

ACCORDING TO THE PILOT, MR. LEITHEAD, HE WAS ON A VFR FLIGHT IN N2750K FROM MONTICELLO SKY RANCH AIRPORT (GA06) TO MADISON MUNICIPAL AIRPORT (52A) ON JANUARY 19, 2010. HE ENTERED A LEFT HAND PATTERN FOR RWY 14 AND OBSERVED THE WINDSOCK WAS DOWN. HIS APPROACH SPEED WAS 60 MPH AND TOUCHDOWN SPEED WAS 45 MPH NEAR THE NUMBERS. HE SLOWED TO A TAXI SPEED OF 10 TO 15 MPH A THOUSAND FEET DOWN THE RUNWAY. MR. LEITHEAD SAID THAT BEFORE MAKING A RIGHT TURN ONTO THE TAXIWAY TO THE RAMP, THE NOSE VEERED RIGHT AND HE CORRECTED AND THEN NOSE MOVED SHARPLY TO THE LEFT AND HE CORRECTED WITH BRAKES AND FULL RIGHT RUDDER. THE TAIL CONTINUED AROUND TOWARD THE RIGHT AND NOSE TO THE LEFT WHEN THE MAIN RIGHT GEAR COLLAPSED. THE AIRPLANE CONTINUED OFF THE RUNWAY, THE RIGHT WINGTIP HIT THE GROUND AND THE TAIL WHEEL SEPARATED AT THE LEAF SPRING/BOLT CONNECTION. THE AIRPLANE CAME TO REST A FEW FEET OFF THE RUNWAY WITH THE NOSE POINTING TO THE WEST. DURING A PHONE INTERVIEW ON JANUARY 19, MR. LEITHEAD SAID THAT HE BELIEVED THAT A SMALL GUST OF WIND MAY HAVE CAUSED THE AIRPLANE TO VEER. DURING THE ON-SITE VISIT, MR. LEITHEAD SAID HE BELIEVED THAT THE TAIL WHEEL SPRING BROKE, WHICH CAUSED THE TAIL TO VEER ABRUPTLY. ON SITE INVESTIGATION SHOWED TIRE MARKS ON THE RUNWAY THAT MATCHED THE MOVEMENT OF N2750K OFF THE RUNWAY. SQUIGGLY TIRE MARKS FROM WHAT APPEAR TO BE THE TAIL WHEEL, SHOW THAT THE TAIL HAD SWUNG AROUND TO THE RIGHT, 180 DEGREES FROM THE RUNWAY HEADING PRIOR TO LEAVING THE RUNWAY. THE RIGHT MAIN WHEEL LEFT TIRE MARKS UNTIL THE RIGHT MAIN GEAR COLLAPSED; THE RIGHT MAIN GEAR REMOVED SOME PAVEMENT. THE MARKS ARE CONSISTENT WITH THE AIRPLANE POSITION OF 180 DEGREES FROM RUNWAY HEADING JUST PRIOR TO MOVING OFF THE RUNWAY. THERE ARE NO SCRAPES IN THE RUNWAY WHERE THE TAILWHEEL TIRE MARKS ARE; HOWEVER, THERE ARE DIVOTS IN THE GROUND THREE FEET AND FIFTEEN FEET OFF THE RUNWAY. THE TAIL CAME TO REST IN THE FIFTEEN FOOT DIVOT. THE TAILWHEEL ASSEMBLY HAS BEEN SENT TO THE NTSB FOR FURTHER ANALYSIS. A PRELIMINARY REVIEW BY THEIR METALLURGIST INDICATES THAT THERE MAY BE A SMALL FATIGUE REGION IN THE LEAF SPRING. FINDINGS FROM A MORE DETAILED ANALYSIS WILL BE GIVEN AT A LATER DATE. THERE IS NO WEATHER REPORTING AT MADISON MUNICIPAL AIRPORT (52A); HOWEVER, AT GREEN COUNTY REGIONAL AIRPORT (3J7) 16.3 NM TO THE EAST, THE WINDS WERE OUT OF THE WEST AT FOUR TO SEVEN KNOTS NEAR THE TIME OF THE ACCIDENT OF 12:25 EST. AT ATHENS/BEN EPPS AIRPORT, 21.5 NM TO THE NORTH NORTHEAST, WINDS WERE OUT OF THE WEST NORTHWEST AT 11 KNOTS 34 MINUTES PRIOR TO THE ACCIDENT AND SEVEN KNOTS GUSTING TO 16 KNOTS 26 MINUTES AFTER THE ACCIDENT. AT BALWIN COUNTY AIRPORT, 29.2 NM TO THE SOUTHEAST, THE WINDS WERE OUT OF THE WEST NORTHWEST AT THREE TO FIVE KNOTS.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.