19991215044409A

Accident · No damage

FAA accident report · Cessna 140 · Helena, MT · December 15, 1999

Date: December 15, 1999 · 15:30 local
Place: Helena, MT
Operating rules: General operating rules (Part 91)
Damage: No damage
Aircraft: N2739N
NTSB investigation: NTSBSEA00LA032
Reported as: Cessna 140

N2739NRegistration cancelled Jan 17, 2018 · Cessna 140S/N 12997 · Built 1947 Airframe modelCessna 140 Engine modelContinental C85 seriesReciprocating

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.

(-23) On December 15, 1999, at approx. 1530 MST, a Cessna 140, N2739N sustained substantial damage when it nosed over during landing roll at the silver city airstrip, about 18 miles northwest of Helena, Montana. The pilot stated that on his second touch-and-go landing, about half way down the runway, the left wheel separated and the airplane nosed over. It was observed that the left wheel and gear extension had separated from the main landing gear leg and were found off the runway on the right side. Surface tracks indicated that the airplane had been tracking along the centerline of the runway and that the airplane had continued to track down the centerline for an additional 30 yards before nosing over. The pilot's medical was not current. Separated wheel extension bolts were found intact (not broken) with the appearance of nut threads and nylon locking devices still on bolt threads. No nuts were found. All four bolts forwarded to the NTSB for further investigation.

As the FAA filed it

(-23) ON DECEMBER 15, 1999, AT APPROX. 1530 MST, A CESSNA 140, N2739N SUSTAINED SUBSTANTIAL DAMAGE WHEN IT NOSED OVER DURING LANDING ROLL AT THE SILVER CITY AIRSTRIP, ABOUT 18 MILES NORTHWEST OF HELENA, MONTANA. THE PILOT STATED THAT ON HIS SECOND TOUCH-AND-GO LANDING, ABOUT HALF WAY DOWN THE RUNWAY, THE LEFT WHEEL SEPARATED AND THE AIRPLANE NOSED OVER. IT WAS OBSERVED THAT THE LEFT WHEEL AND GEAR EXTENSION HAD SEPARATED FROM THE MAIN LANDING GEAR LEG AND WERE FOUND OFF THE RUNWAY ON THE RIGHT SIDE. SURFACE TRACKS INDICATED THAT THE AIRPLANE HAD BEEN TRACKING ALONG THE CENTERLINE OF THE RUNWAY AND THAT THE AIRPLANE HAD CONTINUED TO TRACK DOWN THE CENTERLINE FOR AN ADDITIONAL 30 YARDS BEFORE NOSING OVER. THE PILOT'S MEDICAL WAS NOT CURRENT. SEPARATED WHEEL EXTENSION BOLTS WERE FOUND INTACT (NOT BROKEN) WITH THE APPEARANCE OF NUT THREADS AND NYLON LOCKING DEVICES STILL ON BOLT THREADS. NO NUTS WERE FOUND. ALL FOUR BOLTS FORWARDED TO THE NTSB FOR FURTHER INVESTIGATION.

NTSB investigation

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

NTSB SEA00LA032Accident · No injuriesLimited investigationFinal reportHelena, MTSeparation of the left main landing gear. Factors include inadequate preflight inspection by the pilot, and inadequate inspection at the time of annual inspection by maintenance personnel.Dec 15, 1999 · Substantial damage

Other reports on N2739N · 1

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

Incident 19800104012039ITakeoff Ground Roll · Temple, OKOn takeoff from farm strip, aircraft hit soft spot with left main gear. Aircraftveered & gear dug in and snapped.Jan 4, 1980