A18-5
Ignition Harness
Specifications
- Part Number
- A18-5
- Manufacturer
- Hartzell Engine Technologies LLC
- ATA ChapterMaintenance system chapter
- 74 — Ignition
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Electromechanical
- Inventory ClassRotable, expendable, or consumable
- Expendable
- Certification
- PMA
- Aircraft Category
- Piston-Single
- Criticality
- Standard
Airworthiness Directive coverage
FAA / EASA public regulatory data
- FAAAD 2024-23-01effective Jan 7, 2025Mixed actions
The FAA is adopting a new airworthiness directive (AD) for certain Robinson Helicopter Company Model R44 and R44 II helicopters. This AD was prompted by several reports of failed clutch actuators and failed rivets attaching the belt tension clutch actuator brackets (bracket) to the fan scroll housing. This AD requires inspecting each bracket and, depending on the results, accomplishing additional inspections or taking any necessary corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.
Directives citing this part number in the FAA / EASA regulatory corpus we have processed — not a complete historical AD list. An AD is a compliance requirement that drives scheduled work (inspections, replacements, modifications) on the fleets that carry the part; a directive naming this PN as the replacement part is install demand, not an action against it — and none of this is a prediction that the part will fail.
Airframe Applicability
No airframe data available for this part.
Data Sources(1)
- 2026-03-07
Quick Facts
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