NTSB Identification: SEA93FA002.
The docket is stored on NTSB microfiche number 50087.
Accident occurred Friday, October 02, 1992 in BURLINGTON, WA
Probable Cause Approval Date: 08/30/1993
Aircraft: BEECH N35, registration: N885R
Injuries: 4 Fatal.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
THE AIRCRAFT MADE LOUD RHYTHMIC NOISES DURING TAKEOFF. IT REACHED THE END OF THE RUNWAY AT A LOW ALTITUDE ABOVE THE GROUND IN AN INITIAL CLIMB WHEN THE ENGINE SOUNDS DECREASED, THE LANDING GEAR WAS EXTENDED AND THE AIRCRAFT ENTERED A STEEP TURN BACK TO THE AIRPORT. THE NOSE DROPPED DURING THE TURN, AND THE AIRCRAFT DESCENDED NOSE DOWN, IMPACTED THE GROUND AND IGNITED IN FLAMES. EXAMINATION OF THE WRECKAGE REVEALED A PARTIALLY SEPARATED PROPELLER CYLINDER HUB BALANCE RING. EXAMINATION OF THE PROPELLER REVEALED ONE CYLINDER MOUNTING SCREW WAS MISSING AND FOUR MOUNTING SCREWS CONTAINED FATIGUE CRACKING. THERE WAS A CLEARED AREA OFF THE END OF THE TAKEOFF RUNWAY AND A LARGE, LEVEL PASTURE BEYOND THE CLEARED AREA.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE FAILURE OF SCREWS ON THE PROPELLER HUB DURING TAKEOFF, THE IMPROPER INFLIGHT DECISION BY THE PILOT TO RETURN FOR LANDING, AND THE STEEP, EXCESSIVE BANK ANGLE WHICH RESULTED IN A STALL/SPIN AND LOSS OF CONTROL.
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