20170612007029A

Accident · Substantial damage

FAA accident report · Cessna 172M · Bellport, NY · June 12, 2017

Date: June 12, 2017 · 06:13 local
Place: Bellport, NY
Phase of flight: Cruise/Level Flight
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N13306
NTSB investigation: NTSBERA17LA203
Reported as: Cessna 172M
Reported engine: Lycoming 0-320-E2D
People aboard: 1
Fatal injuries: 0
Other injuries: 1
Pilot’s certificate: Private pilot
Pilot’s flight hours: 191 total

N13306Registration cancelled Sep 6, 2019 · Cessna 172MS/N 17262654 · Built 1973 Airframe modelCessna 172M Engine modelLycoming 0-320 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.

While in normal cruise along the south shore engine shutdown pilot attempted a restart which was not successful. Pilot elected to perform an off airport landing on a golf course, during roll out the aircraft right wing struck a tree and the aircraft was substantially damaged. Further invesigation revealed crankshaft drive gear has backed off the crankshaft and is not driving accessories mounted on the rear of the engine including both magnetos. Engine shutdown caused by lacking ignition after the crankshaft drive gear came loose.

As the FAA filed it

WHILE IN NORMAL CRUISE ALONG THE SOUTH SHORE ENGINE SHUTDOWN PILOT ATTEMPTED A RESTART WHICH WAS NOT SUCCESSFUL. PILOT ELECTED TO PERFORM AN OFF AIRPORT LANDING ON A GOLF COURSE, DURING ROLL OUT THE AIRCRAFT RIGHT WING STRUCK A TREE AND THE AIRCRAFT WAS SUBSTANTIALLY DAMAGED. FURTHER INVESIGATION REVEALED CRANKSHAFT DRIVE GEAR HAS BACKED OFF THE CRANKSHAFT AND IS NOT DRIVING ACCESSORIES MOUNTED ON THE REAR OF THE ENGINE INCLUDING BOTH MAGNETOS. ENGINE SHUTDOWN CAUSED BY LACKING IGNITION AFTER THE CRANKSHAFT DRIVE GEAR CAME LOOSE.

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 ERA17LA203Accident · No injuriesLimited investigationFinal reportSuffolk, NYA loss of preload to the crankshaft gear attachment bolt due to improper installation, which resulted in the fatigue failure of the crankshaft gear alignment dowel and led to the rotation of the crankshaft gear and a subsequent total loss of engine power.Jun 12, 2017 · Substantial damage

Other reports on N13306 · 1

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

Incident 19820512022409IFcd/Prec Ldg From Cruise · Riverhead, NYEngine lost power. Landed in a potato field, valve keepers failed, caused power loss.May 12, 1982