Robinson R44 — U.S. Fleet History Data
Helicopter · 1,868 aircraft on the U.S. registry · built 1992–2026
NTSB records whose airframe serial does not match the aircraft currently holding the registration are excluded, as are service difficulty reports filed while a registration belonged to a different aircraft. U.S. registrations get reused; these counts are reconciled to the airframes actually in this fleet.
Where this fleet reports maintenance difficulties
FAA Service Difficulty Reports filed against Robinson R44 airframes, grouped by JASC system chapter — a factual picture of what mechanics actually report on this type.
- 62 — Main Rotor : 15 reports
- 85 — Reciprocating Engine : 11 reports
- 74 — Ignition : 10 reports
- 28 — Fuel : 5 reports
- 53 — Fuselage : 5 reports
Recent airworthiness directives matched to this type
- AD 2025-11-07 (recurring) · effective 2025-07-11 — visually inspecting a certain flex plate assembly (flex plate) and certain clutch shaft forward yokes (yokes), including each flex plate bolt, and depending on the results, taking
- AD 2024-23-01 · effective 2025-01-07 — several reports of failed clutch actuators and failed rivets attaching the belt tension clutch actuator brackets (bracket) to the fan scroll housing
- AD 2024-20-03 · effective 2024-11-29 — reports of engine governor failure, which was a result of water intrusion inside of the governor controller
- AD 2024-04-02 (recurring) · effective 2024-04-02 — reports of helicopters losing a tail rotor blade (TRB) tip cap
- AD 2022-19-12 · effective 2022-10-20 — same action
ADs published since 1994 in our Federal Register database — the full list of directives applicable to an older airframe is longer; build it at drs.faa.gov. Open/superseded status reflects our last sync. Compliance for a specific airframe can only be verified in its logbooks — that's exactly what our per-aircraft report flags.
Buying one? Read the Robinson R44 buyer's guide — what the records reveal →