DOUBLER

Specifications

Part Number: DOUBLER
Manufacturer: —
ATA ChapterMaintenance system chapter: 53 — Fuselage
CapabilitySystem area (hydraulics, avionics, landing gear…): unknown
Inventory ClassRotable, expendable, or consumable: Expendable
Certification: OEM
Aircraft Category: Unknown
Criticality: Standard
Life & ShelfTypical service/shelf life — verify against OEM data: —

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: 2
Replace events: 0
Repair events: 1
K-code events: 1

Reporting window 2006-04-17 – 2022-02-20Dominant 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 2021-16-13effective Sep 22, 2021Prohibition
The FAA is adopting a new airworthiness directive (AD) for Leonardo S.p.a. (Leonardo) Model A109S and AW109SP helicopters with a certain part-numbered vertical fin vibration absorber installation installed. This AD requires repetitive inspections of the vertical fin vibration absorber installation and the surrounding structure and depending on the inspection results, removing certain parts from service. This AD also prohibits installing certain part-numbered vertical fin vibration absorber installations on any helicopter. This AD was prompted by a report of cracks and damage detected on the vertical fin absorber installation and surrounding structure during scheduled inspections. 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.