20060113000989A

Accident · Substantial damage

FAA accident report · Bell 47B3 · Denison, TX · January 13, 2006

Date: January 13, 2006 · 11:30 local
Place: Denison, TX
Phase of flight: Normal Cruise
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N1575
NTSB investigation: NTSBDFW06CA055
Reported as: Bell 47B3
Reported engine: Lycoming VO435A1F
People aboard: 2
Fatal injuries: 0
Pilot’s flight hours: 4,900 total3,000 in this make and model45 in the last 90 days

N1575Registration cancelled Feb 8, 2018 · Bell 47B3S/N 57 Airframe modelBell 47B3 Engine modelLycoming TVO-435-GIATurbo-prop

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) Inspector privacy data omitted and I responded to an accident involving N1575, a Bell 47 helicopter in Denison Texas. We arrived to the scene at approximately 1600 local. N1575 was sitting upright on the Denison high school football field. The tail rotor was located approximately 2-3 feet from the tail boom. The main rotor stabilizer bar was found approximately 200-300 yards from the accident site. Initial inspection of the part revealed the part had broken from its' mounting. Inspection also revealed the part appeared to have been cracked around its' circumference prior to separation from the aircraft. It appears when the stabilizer bar separated from the mrin rotor assembly it struck the tail rotor causing the aircraft to lose control and cause an emergency landing.

As the FAA filed it

(-23) INSPECTOR ^PRIVACY DATA OM^ AND I RESPONDED TO AN ACCIDENT INVOLVING N1575, A BELL 47 HELICOPTER IN DENISON TEXAS. WE ARRIVED TO THE SCENE AT APPROXIMATELY 1600 LOCAL. N1575 WAS SITTING UPRIGHT ON THE DENISON HIGH SCHOOL FOOTBALL FIELD. THE TAIL ROTOR WAS LOCATED APPROXIMATELY 2-3 FEET FROM THE TAIL BOOM. THE MAIN ROTOR STABILIZER BAR WAS FOUND APPROXIMATELY 200-300 YARDS FROM THE ACCIDENT SITE. INITIAL INSPECTION OF THE PART REVEALED THE PART HAD BROKEN FROM ITS' MOUNTING. INSPECTION ALSO REVEALED THE PART APPEARED TO HAVE BEEN CRACKED AROUND ITS' CIRCUMFERENCE PRIOR TO SEPARATION FROM THE AIRCRAFT. IT APPEARS WHEN THE STABILIZER BAR SEPARATED FROM THE MRIN ROTOR ASSEMBLY IT STRUCK THE TAIL ROTOR CAUSING THE AIRCRAFT TO LOSE CONTROL AND CAUSE AN EMERGENCY LANDING.

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 DFW06CA055Accident · No injuriesData collectionFinal reportDennison, TXThe in-flight separation of the stabilizer bar tube.Jan 13, 2006 · Substantial damage

Other reports on N1575 · 3

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

Accident 20010321004619AAutorot Descent (Rotorcraft) · Ardmore, OK(-23) Tail rotor drive failure. Failure of the shaft assemby, p/n 47-644-180-9, fig 46-1 and coupling p/n 47-644-130-13, fig 46-4, due to loss of lubrication. Lubrication loss from stripped threads on screw AN501A10-4, fig 46-5. (.19) on March 21, 2001,…Mar 21, 2001 · Substantial damage Accident 19980917024909AHovering · Ardmore, OK(.4) On September 17, 1998, at 0915 central daylight time, a Bell 47-G-2 helicopter, N1575, was substantially damaged following a loss of control while hovering at the Ardmore Downtown Executive Airport near Ardmore, Oklahoma. The solo student pilot was not…Sep 17, 1998 · Reported as Bell 47G2 · Substantial damage Accident 19770918032919ATo Running(Helicopter/Vtol Ac) · Lake Orion, MISep 18, 1977 · Substantial damage