20010511008959A

Accident · No damage

FAA accident report · Robsin R44 · Gorst, WA · May 11, 2001

Date
May 11, 2001 · 09:10 local
Place
Gorst, WA
Damage
No damage
Aircraft
N111PH
NTSB investigation
NTSBSEA01FA089
Reported as
Robsin R44

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)Investigation found the helicopter hit a tree at a high angle of decent in a heavily wooded area. The majority of the aircraft was destroyed by post-crash fire. Witnesses from a hearby golf course stated they looked at the aircraft after they heard an unusual noise. They further stated that something was noted falling off the aircraft before it started to spin, and then the aircraft dropped out of sight behind a wooded area. Investigation at the crash site found the aft portion of the tail boom separated from the aircraft, with evidence of main rotor blade contact with the tail boom. The input quill section of the tail rotor gearbox was still attached to the tailboom. The tail rotor assembly, and aft section of the tail rotor gearbox were not connected to the tail boom (see attached sheet).

As the FAA filed it

(-23)INVESTIGATION FOUND THE HELICOPTER HIT A TREE AT A HIGH ANGLE OF DECENT IN A HEAVILY WOODED AREA. THE MAJORITY OF THE AIRCRAFT WAS DESTROYED BY POST-CRASH FIRE. WITNESSES FROM A HEARBY GOLF COURSE STATED THEY LOOKED AT THE AIRCRAFT AFTER THEY HEARD AN UNUSUAL NOISE. THEY FURTHER STATED THAT SOMETHING WAS NOTED FALLING OFF THE AIRCRAFT BEFORE IT STARTED TO SPIN, AND THEN THE AIRCRAFT DROPPED OUT OF SIGHT BEHIND A WOODED AREA. INVESTIGATION AT THE CRASH SITE FOUND THE AFT PORTION OF THE TAIL BOOM SEPARATED FROM THE AIRCRAFT, WITH EVIDENCE OF MAIN ROTOR BLADE CONTACT WITH THE TAIL BOOM. THE INPUT QUILL SECTION OF THE TAIL ROTOR GEARBOX WAS STILL ATTACHED TO THE TAILBOOM. THE TAIL ROTOR ASSEMBLY, AND AFT SECTION OF THE TAIL ROTOR GEARBOX WERE NOT CONNECTED TO THE TAIL BOOM (SEE ATTACHED SHEET).

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.