20150313004069A

Accident · Substantial damage

FAA accident report · Eurocopter AS 350 B2 · Anchorage, AK · March 13, 2015

Date
March 13, 2015 · 06:30 local
Place
Anchorage, AK
Airport
Merrill Field
Phase of flight
Cruise/Level Flight
Operating rules
Air taxi and commuter (Part 135)
Operator
9EKA
Damage
Substantial damage
Aircraft
N814EH
NTSB investigation
NTSBANC15LA015
Reported as
Eurocopter AS 350 B2
Reported engine
Turbomeca ARRIEL-1SER
People aboard
3
Fatal injuries
0
Other injuries
0

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.

On 3/13/2015 at approximately 0630, the pilot and two passengers departed Merrill Field (mri) for beluga, AK. After approximately 20-30 minutes of flight, pilot felt a sudden jarring in the tail rotor pedals followed by a slow-rate yaw to the left. After performing controllability checks at various speeds, altitude changes, headings and power settings, the pilot was able to confirm that right-pedal input had no effect to aircraft yaw attitude. Pilot initiated a return to mri and advised air traffic control of the situation and intentions to perform an emergency run-on landing. Landing was cleared for runway 34 and two run-on landings were attempted before a third attempt was successful which was uneventful. Subsequent inspection of the aircraft found that the tail rotor pitch control spider part number 350A33-2030-00 had failed. The NTSB determined that this is an aircraft accident because this component failure meets the classification as substantial damage per 8900.1, vol 7, ch 1, sec 1, paras 7-4.a.1) and 7-4.a.4).

As the FAA filed it

ON 3/13/2015 AT APPROXIMATELY 0630, THE PILOT AND TWO PASSENGERS DEPARTED MERRILL FIELD (MRI) FOR BELUGA, AK. AFTER APPROXIMATELY 20-30 MINUTES OF FLIGHT, PILOT FELT A SUDDEN JARRING IN THE TAIL ROTOR PEDALS FOLLOWED BY A SLOW-RATE YAW TO THE LEFT. AFTER PERFORMING CONTROLLABILITY CHECKS AT VARIOUS SPEEDS, ALTITUDE CHANGES, HEADINGS AND POWER SETTINGS, THE PILOT WAS ABLE TO CONFIRM THAT RIGHT-PEDAL INPUT HAD NO EFFECT TO AIRCRAFT YAW ATTITUDE. PILOT INITIATED A RETURN TO MRI AND ADVISED AIR TRAFFIC CONTROL OF THE SITUATION AND INTENTIONS TO PERFORM AN EMERGENCY RUN-ON LANDING. LANDING WAS CLEARED FOR RUNWAY 34 AND TWO RUN-ON LANDINGS WERE ATTEMPTED BEFORE A THIRD ATTEMPT WAS SUCCESSFUL WHICH WAS UNEVENTFUL. SUBSEQUENT INSPECTION OF THE AIRCRAFT FOUND THAT THE TAIL ROTOR PITCH CONTROL SPIDER PART NUMBER 350A33-2030-00 HAD FAILED. THE NTSB DETERMINED THAT THIS IS AN AIRCRAFT ACCIDENT BECAUSE THIS COMPONENT FAILURE MEETS THE CLASSIFICATION AS SUBSTANTIAL DAMAGE PER 8900.1, VOL 7, CH 1, SEC 1, PARAS 7-4.A.1) AND 7-4.A.4).

NTSB investigation

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