Manufacturer
Honeywell Aerospace
Number
FAA 2023-24-04
Model(s)
AS907–1–1A (HTF7000) and AS907–2–1G (HTF7250G)
Published Date
Effective Date
Summary
Requires either updating software of certain electronic control units (ECU) or replacement of ECUs installed on AS907–1–1A (HTF7000) or AS907–2–1G (HTF7250G) engines with serviceable units. Prompted by reports of compressor surge, including a dual engine compressor surge, during takeoff climbout through a steep temperature inversion, causing a loss of engine thrust control.
Company Reference
Aircraft Reference