AD 2004-01-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | France Model AS355E, F, F1, F2, and N | Airworthiness Directives; Eurocopter France Model AS355E, F, F1, F2, and N Helicopters |
Unsafe Condition
Complete loss of electrical power generating systems, except for direct battery power, due to a combination of high outside temperature and long flight duration with the landing light on, causing nontemperature compensated trip switches to prematurely trip.
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Required Actions
Revise the Limitations section of the Rotorcraft Flight Manual (RFM) to prohibit using the landing light except for landing and takeoff. Replace the 40 amp 10P1 and 10P2 contactors with 50 amp circuit breakers. Upgrade the electrical master boxes.
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Compliance Time
Before further flight
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Affected Aircraft
Eurocopter France Model AS355E, F, F1, F2, and N helicopters.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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