Accident · 1999-06-11

NTSB case MIA99LA181 · Robinson R-44 · Part 91

What the record says

Event date: 1999-06-11
Event type: Accident
Highest injury level: No injuries
Aircraft: Robinson R-44 (N49669)
Operating rule: Part 91
Operator: operator not named in the NTSB record

Probable cause

The induced fatigue fracture of a component in the engine-to-transmission rotor drive system resulting in a disconnection of the drive system during cruise flight caused by inadequate inspection processes by the manufacturer and the subsequent autorotative emergency descent and forced landing.

Source: NTSB case MIA99LA181

Flight crew

Flight-crew details for this event aren't in the NTSB database extract we hold (its coverage starts with 2008 events) — a gap in our data, not an absence of crew.

Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.

All incidents →