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20210525003819I

Incident · Substantial damage
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FAA incident report · Amazon Logistics MK27 · Pendleton, OR · May 25, 2021

FAA Aviation Safety Information Portal

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Date
May 25, 2021 · 14:42 local
Place
Pendleton, OR
Phase of flight
Hover/Holding
Operating rules
Air taxi and commuter (Part 135)
Operator
4MZA
Damage
Substantial damage
Aircraft
N343PA
Reported as
Amazon Logistics MK27
Reported engine
Amateur-built UNKNOWN ENG
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Private pilot
Pilot’s flight hours
3,655 total
N343PARegistration cancelled Oct 26, 2021 · Amazon Logistics MK27S/N 000365 · Built 2020Airframe modelAmazon Logistics MK27Engine modelAmateur-built UNKNOWN ENG

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.

N343PA, an Amazon UAS MK27, SN000365 operated under part 135 had a complete failure of the number 5 propeller p/n 117488-01, s/n 117488.reva.238 after less than one minute in service after installation on 05/25/21. The failure occurred during the vtol phase at 12 feet AGL. The no. 5 propeller blade debonded from the mount and caused an uncontrolled condition in flight while descending towards the ground. After the no. 5 propeller departed the aircraft it became inverted and landed upside down. The aircraft impacted the ground under power in an uncontrolled state and was substantially damaged structurally. No injuries to persons on ground and no damage to property other than UAS. UAS remote pilot error was not reported nor suspected. Technician installation error was not reported nor suspected.

The aircraft was operating near the Pendleton, OR airport at a practice delivery site and was not engaged in actual part 135 delivery operations at the time. Location of practice area was .75 miles NE of east end rwy 25 in the pur test range. Aircraft was removed from site before FSDO was notified the next day. On scene investigation was not possible.

Ch was notified by FSDO iic that accidents and incidents reported to ntsb/faa should not be disturbed or moved until after release of wreckage by NTSB or FAA iic.

As the FAA filed it

N343PA, AN AMAZON UAS MK27, SN000365 OPERATED UNDER PART 135 HAD A COMPLETE FAILURE OF THE NUMBER 5 PROPELLER P/N 117488-01, S/N 117488.REVA.238 AFTER LESS THAN ONE MINUTE IN SERVICE AFTER INSTALLATION ON 05/25/21. THE FAILURE OCCURRED DURING THE VTOL PHASE AT 12 FEET AGL. THE NO. 5 PROPELLER BLADE DEBONDED FROM THE MOUNT AND CAUSED AN UNCONTROLLED CONDITION IN FLIGHT WHILE DESCENDING TOWARDS THE GROUND. AFTER THE NO. 5 PROPELLER DEPARTED THE AIRCRAFT IT BECAME INVERTED AND LANDED UPSIDE DOWN. THE AIRCRAFT IMPACTED THE GROUND UNDER POWER IN AN UNCONTROLLED STATE AND WAS SUBSTANTIALLY DAMAGED STRUCTURALLY. NO INJURIES TO PERSONS ON GROUND AND NO DAMAGE TO PROPERTY OTHER THAN UAS. UAS REMOTE PILOT ERROR WAS NOT REPORTED NOR SUSPECTED. TECHNICIAN INSTALLATION ERROR WAS NOT REPORTED NOR SUSPECTED.

THE AIRCRAFT WAS OPERATING NEAR THE PENDLETON, OR AIRPORT AT A PRACTICE DELIVERY SITE AND WAS NOT ENGAGED IN ACTUAL PART 135 DELIVERY OPERATIONS AT THE TIME. LOCATION OF PRACTICE AREA WAS .75 MILES NE OF EAST END RWY 25 IN THE PUR TEST RANGE. AIRCRAFT WAS REMOVED FROM SITE BEFORE FSDO WAS NOTIFIED THE NEXT DAY. ON SCENE INVESTIGATION WAS NOT POSSIBLE.

CH WAS NOTIFIED BY FSDO IIC THAT ACCIDENTS AND INCIDENTS REPORTED TO NTSB/FAA SHOULD NOT BE DISTURBED OR MOVED UNTIL AFTER RELEASE OF WRECKAGE BY NTSB OR FAA IIC.