NAS1291
NUT PLATE
Specifications
- Part Number
- NAS1291
- Manufacturer
- —
- ATA ChapterMaintenance system chapter
- 33 — Lights
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Consumables / Hardware
- Inventory ClassRotable, expendable, or consumable
- Consumable
- Certification
- PMA
- Aircraft Category
- Unknown
- Criticality
- Standard
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
- SDR reports
- 1
- Replace events
- 1
- Repair events
- 0
- K-code events
- 1
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 2024-17-02effective Nov 8, 2024Prohibition
The FAA is adopting a new airworthiness directive (AD) for all Bell Textron Inc. (Bell) Model 204B, 205A, 205A-1, 205B, and 210 helicopters. This AD was prompted by an accident and incidents involving failure of the tail boom attachment structure. This AD requires inspecting the tail boom assembly hardware, replacing tail boom attachment hardware, greasing the bolt shanks, and inspecting torque. This AD also prohibits installing steel alloy nuts on any helicopter. 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(2)
Data Sources(1)
- 2026-03-07
Quick Facts
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