KH21559

Name: KH21559
SKU: KH21559

COMPRESSOR BLADE

OEM

Specifications

Part Number: KH21559
Manufacturer: RROYCE
ATA ChapterMaintenance system chapter: 72 — Engine - Turbine / Turboprop
CapabilitySystem area (hydraulics, avionics, landing gear…): Engine Accessories
Inventory ClassRotable, expendable, or consumable: Rotable
Certification: OEM
Aircraft Category: Unknown
Criticality: Critical & Life-Limited

Service Reliabilityfrom FAA SDR (Service Difficulty Reports)

—

Component-change rate (FAA K-code)

low confidence

SDR reports: 1
Replace events: 1
Repair events: 0
K-code events: 1

Reporting window 2020-07-03 – 2020-07-03Dominant chapter ATA 72

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

2directives reference this part number — recurring compliance demand wherever it flies

Most recent

FAAAD 2021-17-11effective Oct 12, 2021Mixed actions
The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Trent XWB-75, Trent XWB-79, Trent XWB-79B, and Trent XWB-84 model turbofan engines. This AD was prompted by reports of cracks in the intermediate-pressure compressor (IPC) rotor 1 (R1) blades installed on certain Trent XWB model turbofan engines. This AD requires initial and repetitive borescope inspections (BSIs) of the affected IPC R1 blades and, depending on the results of the inspections, replacement of all 34 IPC R1 blades. The FAA is issuing this AD to address the unsafe condition on these products.
EASAAD 2020-0277effective Dec 25, 2020Mixed actions
No summary available - see the EASA publication.

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.