AD 2009-22-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Eurocopter France (ECF) Model EC 155B and EC155B1 Helicopters |
Unsafe Condition
Freezing of the route display on the navigation display (ND) in the Sector mode occurs for flight plans that include procedures in the terminal zone (departure or arrival).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Make pen and ink changes, or insert a copy of this AD or an amended copy of Rotorcraft Flight Manual Supplement (RFM) 58 into the operating limitations section of the RFM with the specified limitation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter France Model EC 155B and EC155B1 helicopters, all serial numbers, with the UNS-1D navigation system installed, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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