327211
DISC ASSY
Specifications
- Part Number
- 327211
- Manufacturer
- Bell
- ATA ChapterMaintenance system chapter
- 65 — Tail Rotor Drive
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Landing Gear
- Inventory ClassRotable, expendable, or consumable
- Rotable
- Certification
- OEM
- Aircraft Category
- Unknown
- Criticality
- Life-Limited
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
- SDR reports
- 32
- Replace events
- 29
- Repair events
- 0
- K-code events
- 27
Directional indicator only. Reflects what operators reported to the FAA when a difficulty was logged — not a fleet-normalized failure rate or a cost-based BER. Use alongside operator-specific data.
Airworthiness Directive coverage
FAA / EASA public regulatory data
- FAAAD 2021-15-06effective Aug 27, 2021ProhibitionNamed as replacement part
The FAA is adopting a new airworthiness directive (AD) for certain Bell Helicopter Textron Canada Limited (now Bell Textron Canada Limited) Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This AD was prompted by a report that a certain tail rotor disc assembly, sold as an alternate part, does not conform to the approved configuration. This AD requires determining if an affected part is installed (by doing a maintenance records check or inspection), and if an affected part is found, replacement with a non-affected part. 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(3)
Alternate / Related Part Numbers(1)
Data Sources(1)
- 2026-03-07
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