AD 2023-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell | International Inc | Airworthiness Directives; Honeywell International Inc. Engines |
Unsafe Condition
Reports of compressor surge, including a dual engine compressor surge, during takeoff climb out through a steep temperature inversion, causing a loss of engine thrust control.
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Required Actions
Replace a certain electronic control unit (ECU) software version installed on AS907-1-1A engines with updated software or replace certain ECUs installed on AS907-1-1A engines with ECUs eligible for installation, and replace certain ECUs installed on AS907-2-1G engines with ECUs eligible for installation.
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Compliance Time
Within 12 months of effective date
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Affected Aircraft
All Honeywell International Inc. Model AS907-1-1A and AS907-2-1G engines.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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