NAS62721

BOLT

OEM

Specifications

Part Number
NAS62721
Manufacturer
ATA ChapterMaintenance system chapter
53 — FuselageField reports: 53 (100%) — 1 report
CapabilitySystem area (hydraulics, avionics, landing gear…)
unknown
Inventory ClassRotable, expendable, or consumable
Expendable
Certification
OEM
Aircraft Category
Unknown
Criticality
Standard

Service Reliabilityfrom FAA SDR (Service Difficulty Reports)

Component-change rate (FAA K-code)*
low confidence

* Structural ATA chapter (53). Verb-based propensity is suppressed because "REPAIRED" in the SDR text typically refers to the airframe being repaired around the part, not the part itself. FAA K-code component-change rate is the honest signal.

SDR reports
1
Replace events
0
Repair events
0
K-code events
1
Reporting window 2019-07-312019-07-31Dominant chapter ATA 53

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

1directive references this part number — recurring compliance demand wherever it flies
Most recent
  • FAAAD 2024-17-02effective Nov 8, 2024ProhibitionNamed as replacement part

    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(1)

Data Sources(1)

Quick Facts

Airframes1 applicable
AlternatesNone recorded
ClassExpendable
CriticalityStandard
CategoryUnknown

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