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NTSB Report
December 16, 2024 · Amazon Com Services MK30 · N209PA
Pendleton, OR
Overview
Report Status
Probable Cause
Event Type
Accident
Date
December 16, 2024
Injury Outcomes
No injuries (1 uninjured)
Location
Pendleton, OR
Aircraft
Amazon Com Services MK30 (2024)
Tail Number
N209PA
Operator
Amazon Com Services
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR25LA063
The operator of the unmanned aircraft system (UAS) reported that, during a test flight with a new software upgrade, the UAS completed the delivery mission and was transitioning to land, when all six motors suddenly stopped. The UAS fell to the ground and impacted the asphalt taxiway, resulting in substantial damage to the fuselage and wings. Examination of the UAS by the operator revealed that the vehicle erroneously determined it had touched down due to an incorrect altitude reading from a new software installation, which resulted in a loss of engine power. The operator reported that there were no preaccident mechanical failures or malfunctions with the UAS that would have precluded normal operation.
NTSB Probable Cause
An improper altitude indication from a recent software update, which resulted in a loss of engine power in flight.
Full Narrative
The operator of the unmanned aircraft system (UAS) reported that, during a test flight with a new software upgrade, the UAS completed the delivery mission and was transitioning to land, when all six motors suddenly stopped. The UAS fell to the ground and impacted the asphalt taxiway, resulting in substantial damage to the fuselage and wings. Examination of the UAS by the operator revealed that the vehicle erroneously determined it had touched down due to an incorrect altitude reading from a new software installation, which resulted in a loss of engine power. The operator reported that there were no preaccident mechanical failures or malfunctions with the UAS that would have precluded normal operation.
Flight
Event TypeAccident
Event Time09:58 PST
Nearest AirportEastern Oregon Rgnl At Pendlet (0nm E)
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAmazon Com Services MK30
Tail NumberN209PA
Aircraft CategoryHeli
DamageSubstantial
OperatorAmazon Com Services
Operating RulePart 91
Engines6
Engine TypeElectric
Engine DetailsAma/Expr · UNKNOWN ENG · Electric | Ama/Expr · UNKNOWN ENG · Electric | Ama/Expr · UNKNOWN ENG · Electric
Seats0
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 30 · First Class · None
Conditions
ConditionsVMC
LightDaylight
Wind320° @ 4 kt
Visibility10 sm
CeilingBroken clouds 5000 ft
Temperature / Dew Point39 F / 37 F
Altimeter29.96 inHg
Observation Time09:53
Weather SourceWFAC