Number
Name
Specifications
- Part Number
- Number
- Manufacturer
- Aircraft Component Design LLC
- ATA ChapterMaintenance system chapter
- 25 — Equipment / Furnishings
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Interior / Furnishings
- Inventory ClassRotable, expendable, or consumable
- Expendable
- Certification
- PMA
- Aircraft Category
- Multi-Category
- Criticality
- Standard
- Life & ShelfTypical service/shelf life — verify against OEM data
- —
Airworthiness Directive coverage
FAA / EASA public regulatory data
- FAAAD 2024-18-04effective Nov 12, 2024ProhibitionNamed as replacement part
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-2A12 airplanes. This AD was prompted by a report indicating that the fan in a transformer rectifier unit (TRU) can become inoperative in a manner that is not detectable by the fan monitoring circuit. This AD requires replacement of the existing TRU Number 2 with a new part number that incorporates a correction to the fan and the monitoring circuit. This AD also prohibits the installation of affected parts. 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
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