20000701035759I

Incident

FAA incident report · Diamon DA20-C1 · Spanish Fork, UT · July 1, 2000

Date: July 1, 2000 · 12:29 local
Place: Spanish Fork, UT
Airport: Spanish Fork Springville Airport
Phase of flight: Normal Cruise
Operating rules: General operating rules (Part 91)
Aircraft: N991CT
NTSB investigation: NTSBDEN00IA133
Reported as: Diamon DA20C1
People aboard: 2
Fatal injuries: 0
Pilot’s flight hours: 170 total80 in this make and model40 in the last 90 days

N991CTRegistration cancelled Apr 5, 2021 · Diamond Aircraft Ind DA20-C1S/N C0091 · Built 1999 Airframe modelDiamond Aircraft Ind DA20-C1 Engine modelContinental 0-200 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)Aircraft was in cruise flight, east bound up Spanish Fork canyon at 9,500' when the pilot experienced a vibration. He immediately performed a 180' turn towards Spanish Fork, UT. And was in the process of shutting down the engine due to the severe vibration when the propeller departed the aircraft. He established a glide to Spanish Fork airport and landed without incident.

As the FAA filed it

(-23)AIRCRAFT WAS IN CRUISE FLIGHT, EAST BOUND UP SPANISH FORK CANYON AT 9,500' WHEN THE PILOT EXPERIENCED A VIBRATION. HE IMMEDIATELY PERFORMED A 180' TURN TOWARDS SPANISH FORK, UT. AND WAS IN THE PROCESS OF SHUTTING DOWN THE ENGINE DUE TO THE SEVERE VIBRATION WHEN THE PROPELLER DEPARTED THE AIRCRAFT. HE ESTABLISHED A GLIDE TO SPANISH FORK AIRPORT AND LANDED WITHOUT INCIDENT.

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 DEN00IA133Incident · No injuriesIncident investigationFinal reportSpanish Fork, UTThe company maintenance personnel's inadequate torquing procedures of the propeller attachment bolts which resulted in the fatigue failure of the propeller attachment bolts and the in-flight separation of the propeller.Jul 1, 2000 · Minor damage