NTSB CAROL · Event
Event NYC92IA035
Registry · N146CA
FAA Aircraft Registry record.
Make / Model
LANCAIR SUPER ES
Year of manufacture
2005
Engine
AMA/EXPR UNKNOWN ENG
Seats / Engines
4 seats · 1 engine
Last airworthiness date
20051017
ADS-B equipped
Yes — Mode-S A0B92D
Registrant of record
HEADY DAVID S
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
A FATIGUE FRACTURE ON THE PROPELLER SHAFT, THAT ORIGINATED AT A SUBSURFACE SLAG INCLUSION, WHICH REMAINED IN THE MATERIAL USED TO MANUFACTURE THE SHAFT.
Factual narrative
THE FLIGHT CREW DETECTED VIBRATION COMING FROM THE RIGHT PROPELLER AND MADE A DECISION TO SHUT THE ENGINE DOWN. DURING THE SHUTDOWN PROCESS THE PROPELLER SEPARATED FROM THE AIRPLANE. EXAMINATION OF BOTH PORTIONS OF THE FAILED PROPELLER SHAFT REVEALED THE SHAFT FAILED DUE TO FATIGUE. METALLURGICAL EXAMINATION FOUND A SLAG INCLUSION JUST BELOW THE FRACTURE SURFACE. THIS DEFECT OCCURRED DURING THE MELTING OF THE ORIGINAL INGOT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1991_NYC92IA035.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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