MRIS, LLC
Also recorded as: AVERA, AVERA CAREFLIGHT, AVERA MCKENNAN CAREFLIGHT, CAREFLIGHT, MRIS LLC, MRIS, LLC
Accident & enforcement record
Events that happened, regardless of the operator's own reporting. Each links to its public source.
NTSB accidents & incidents
Operated by MRIS LLC (per NTSB report)
The gas generator rear bearing oil scavenge line blocked with coke, which resulted in a failed rear bearing due to an excess of oil lubrication. Contributing to the incident was the operator not completely performing the maintenance items and not utilizing an oil for higher temperatures.
FAA enforcement actions
No FAA enforcement actions linked to this operator.
Maintenance disclosure history
Service Difficulty Reports are self-reported maintenance findings. The NUMBER of reports is not a measure of reliability — diligent operators file more, not fewer. These are shown for transparency, not as a negative signal. To verify a report, search its control number at the FAA SDRS site.
Reports span 2017–2017. Most-reported systems: Engine (72) — 1. Most-common natures of condition, as filed: FLAME/FIRE — 1.
1 report on file.
Part: OIL SYSTEM — PLUGGED (NR 2 ENGINE) · airframe 6,284 hrs · 14,660 cycles
THE PROBLEM APPEARS TO BE A PLUGGED SCAVENGE LINE DUE TO INTERNAL ENGINE COKING. THE RESULT COULD BE EXCESSIVE INTERNAL OIL PRESSURES CAUSING EXTERNAL DISCHARGE OF THE OIL, IN THIS CASE OUT THROUGH A VENT LINE. ALONG WITH THAT THERE WOULD BE A BYPASS OF OIL INTERNALLY THROUGH THE LABYRINTH SEALS (3) AND WOULD ALLOW THE OIL TO ENTER AND EXIT THE GAS GENERATOR ALLOWING FOR AN IGNITION SOURCE AND IGNITION. AT THAT POINT YOU WOULD HAVE AN IGNITION SOURCE AT THE GAS GENERATOR, BURNING OIL RUNNING DOWN THE SIDE OF THE ENGINE ALONG WITH VENTING OIL AVAILABLE DRAINING ONTO THE DECK AND ADDING FUEL (OIL) TO THE FIRE.
Linked aircraft
| N-number | Make / model | Year | Status | Link basis |
|---|---|---|---|---|
| N145SD | EUROCOPTER DEUTSCHLAND GMBH MBB-BK 117 C-2 | 2013 | Valid Registration | Matched by certificate designator |
| N605AV | AIRBUS HELICOPTERS DEUTSCHLAND MBB-BK 117 D-2 | 2017 | Valid Registration | Matched by certificate designator |
| N911MK | EUROCOPTER DEUTSCHLAND GMBH MBB-BK 117 C-2 | 2008 | Valid Registration | Matched by certificate designatorOperator named in NTSB report |