EASA SIB NE-11-22
Rolls-Royce Corporation AE 3007 Engines — Replacement of Full Authority Digital Electronic Control (FADEC) Part Number 23073177
Summary
Special Airworthiness Information Bulletin SAIB: NE-11-22 is an FAA informational bulletin addressing Rolls-Royce Corporation AE 3007C and AE 3007C1 turbofan engines equipped with Full Authority Digital Electronic Control (FADEC) hardware part number 23073177. These engines, installed on aircraft such as the Cessna Citation 750, may experience uncommanded in-flight engine shutdowns due to electrical issues. The bulletin provides guidance to operators and maintenance personnel to mitigate this risk.
What Changed
SAIB: NE-11-22 introduces awareness of a potential issue causing uncommanded engine shutdowns linked to reverse voltages affecting the fuel shutoff valve in AE 3007C and AE 3007C1 engines with specific FADEC hardware. It recommends compliance with Rolls-Royce Service Bulletin AE3007C-73-046, which installs a diode adapter to prevent these reverse voltages. This bulletin does not mandate regulatory action but advises preventive maintenance.
Why It Matters
This information is critical for aviation professionals because uncommanded engine shutdowns can compromise flight safety and operational reliability. Operators and maintenance organizations must understand the risk and implement the recommended service bulletin to reduce the likelihood of in-flight shutdowns. Ensuring compliance helps maintain engine performance and avoid unscheduled maintenance or potential incidents.
What To Do
Operators and maintenance personnel should perform Rolls-Royce Service Bulletin AE3007C-73-046 at the next maintenance opportunity to install the FADEC diode adapter. Additionally, any replacement FADEC units with part number 23073177 installed on AE 3007C and AE 3007C1 engines must comply with this service bulletin to mitigate the risk of engine shutdown. No specific compliance deadline is mandated, but timely action is advised.
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