Accident · 2018-07-29
What the record says
- Event date
- 2018-07-29
- Event type
- Accident
- Highest injury level
- No injuries
- Aircraft
- Robinson R44 (N744AK)
- Operating rule
- PUBU
- Operator
- Quicksilver Air, Inc. Operator named in NTSB report
- Operated by (per NTSB report)
- Quicksilver Air Inc
Probable cause
Maintenance personnel's application of insufficient preload on the attachment hardware for the idler gear shaft during engine overhaul, which resulted in the dismounting of the idler gear shaft assembly due to wear and deformation and the subsequent total loss of engine power. Contributing to the accident was a mechanic's failure to identify metallic particles contained in the oil filter element at the most recent 100-hour inspection.
Source: NTSB case ANC18LA058Flight 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 | Commercial | Helicopter | 48 | Class 2 (2018-01-03) | 2,791 total · 1,566 in this make/model · 2,656 as PIC · 98 last 90 days |
Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.