Aviation Accident Summaries

Aviation Accident Summary LAX92LA338

PARKER, AZ, USA

Aircraft #1

N1547P

AIR TRACTOR AT-401

Analysis

THE PILOT WAS CONDUCTING AN AERIAL APPLICATION SWATH RUN WHEN 10 INCHES OF A PROPELLER BLADE SEPARATED. THE PILOT EXECUTED AN EMERGENCY LANDING. ON TOUCHDOWN, THE AIRCRAFT NOSED OVER AFTER COLLIDING WITH THE ROUGH/UNEVEN TERRAIN. A METALLURGICAL EXAMINATION OF PROPELLER BLADE DISCLOSED THE PRESENCE OF FATIGUE ACROSS 60% OF THE FRACTURED SURFACE. THE ORIGIN OF THE FATIGUE CENTERED ON A NOTCH OF A PREVIOUSLY REWORKED AREA. THE PROPELLER BLADE HAD ACCURED 273 FLIGHT HOURS SINCE IT WAS OVERHAULED.

Probable Cause and Findings

THE INADEQUATE OVERHAUL OF THE PROPELLER BLADE BY THE OVERHAUL FACILITY. CONTRIBUTING TO THIS ACCIDENT WAS THE ROUGH AND UNEVEN TERRAIN.

 

Source: NTSB Aviation Accident Database

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