20050502011379A

Accident · Substantial damage

FAA accident report · Bell 206L-1 · Peach Springs, AZ · May 2, 2005

Date
May 2, 2005 · 09:45 local
Place
Peach Springs, AZ
Airport
Grand Canyon West
Phase of flight
Pwr Off Vert Land/Autorotate
Operating rules
Rotorcraft external load (Part 133)
Operator
PG9L
Damage
Substantial damage
Aircraft
N3895D
NTSB investigation
NTSBLAX05LA155
Reported as
Bell 206L1
People aboard
1
Fatal injuries
0
Pilot’s flight hours
3,586 total770 in this make and model4 in the last 90 days

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) On may 2, 2005, at approximately 0945 mountain standard time, N3895D, a Bell 206-L1 aircraft made an emergency landing in a wooded area during an external load operation. There was no injury to the pilot but the aircraft sustained substantial damage. During an interview, the pilot stated that while he was positioning to drop the load off (the load was about 4-5 feet above the ground) he heard a tone alert in his headset. (Note: this system activates only when the engine reaches above 100% torque, and a torque of 104% was recorded). He immediately looks back inside the cockpit to investigate the tone alert. The pilot then felt a "ding" followed by left and right yaw and severe up and down aircraft movements. He also head a loud low frequency popping sound and experienced a rapid descent. He raised the collective to stop the descent but the vibration and the loud popping sound got worse. Realizing that he didn't have time to stabilize the aircraft he entered autorotation. Due to uneven surface and tall trees around the landing area, the aircraft sustained damage to the tail boom, tail rotor blades, main rotor blades and the right landing gear skid.

As the FAA filed it

(-23) ON MAY 2, 2005, AT APPROXIMATELY 0945 MOUNTAIN STANDARD TIME, N3895D, A BELL 206-L1 AIRCRAFT MADE AN EMERGENCY LANDING IN A WOODED AREA DURING AN EXTERNAL LOAD OPERATION. THERE WAS NO INJURY TO THE PILOT BUT THE AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE. DURING AN INTERVIEW, THE PILOT STATED THAT WHILE HE WAS POSITIONING TO DROP THE LOAD OFF (THE LOAD WAS ABOUT 4-5 FEET ABOVE THE GROUND) HE HEARD A TONE ALERT IN HIS HEADSET. (NOTE: THIS SYSTEM ACTIVATES ONLY WHEN THE ENGINE REACHES ABOVE 100% TORQUE, AND A TORQUE OF 104% WAS RECORDED). HE IMMEDIATELY LOOKS BACK INSIDE THE COCKPIT TO INVESTIGATE THE TONE ALERT. THE PILOT THEN FELT A "DING" FOLLOWED BY LEFT AND RIGHT YAW AND SEVERE UP AND DOWN AIRCRAFT MOVEMENTS. HE ALSO HEAD A LOUD LOW FREQUENCY POPPING SOUND AND EXPERIENCED A RAPID DESCENT. HE RAISED THE COLLECTIVE TO STOP THE DESCENT BUT THE VIBRATION AND THE LOUD POPPING SOUND GOT WORSE. REALIZING THAT HE DIDN'T HAVE TIME TO STABILIZE THE AIRCRAFT HE ENTERED AUTOROTATION. DUE TO UNEVEN SURFACE AND TALL TREES AROUND THE LANDING AREA, THE AIRCRAFT SUSTAINED DAMAGE TO THE TAIL BOOM, TAIL ROTOR BLADES, MAIN ROTOR BLADES AND THE RIGHT LANDING GEAR SKID.

NTSB investigation

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