Incident · 2017-01-26
What the record says
- Event date
- 2017-01-26
- Event type
- Incident
- Highest injury level
- No injuries
- Aircraft
- EUROCOPTER DEUTSCHLAND GMBH MBB BK 117 C-2 (N911MK)
- Operating rule
- Part 135
- Operator
- MRIS, LLC Operator named in NTSB report
- Operated by (per NTSB report)
- MRIS LLC
Probable cause
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.
Source: NTSB case CEN17IA094Flight crew
Certification and experience as recorded in the NTSB accident database for this event. The NTSB records these facts about the crew's flying history; GroundCheck shows them as filed, without names or identities.
| Role | Certificate | Instrument rating | Age | Medical | Flight hours |
|---|---|---|---|---|---|
| Pilot pilot flying | Airline transport pilot / Flight instructor | Helicopter | 34 | Class 2 (2016-05-12) | 4,827 total · 1,622 in this make/model · 4,756 as PIC · 55 last 90 days |
Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.