3400465040
GEARBOX
Specifications
- Part Number
- 3400465040
- Manufacturer
- CFMINT
- ATA ChapterMaintenance system chapter
- 83 — Accessory Gearboxes
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Engine Accessories
- Inventory ClassRotable, expendable, or consumable
- Rotable
- Certification
- OEM
- Aircraft Category
- Narrow-Body
- Criticality
- Critical
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
- SDR reports
- 2
- Replace events
- 2
- Repair events
- 0
- K-code events
- 0
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 2022-02-03effective Mar 22, 2022Mixed actionsNamed as replacement part
The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. The AD applies to CFM International, S.A. CFM56-3 and CFM56-7B model turbofan engines with certain accessory gearbox assembly (AGB) not equipped with a dynamic oil seal assembly in the handcranking pad. As published, the part numbers (P/Ns) listed in paragraph (i)(2)(i) are incorrect. This document corrects that error. In all other respects, the original document remains the same; however, for clarity, the FAA is publishing the entire rule in the Federal Register.
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)
Data Sources(1)
- 2026-03-07
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