AD 2000-01-19
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | Deutschland GMBH Model EC 135 P1 and EC 135 T1 | Airworthiness Directives; Eurocopter Deutschland GMBH Model EC 135 P1 and EC 135 T1 Helicopters |
Unsafe Condition
Main rotor blade expansion bolt nuts becoming loose, which could result in severe vibration during flight and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect main rotor expansion bolt safety wires, bolt heads, and bolt nuts. Replace any unairworthy expansion bolt with a hexagon bolt. Replace any bolt nut as necessary before further flight. Replace each expansion bolt, regardless of condition, no later than January 31, 2000.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours or before further flight for immediate actions; no later than January 31, 2000, for replacement of all expansion bolts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter Deutschland GMBH Model EC 135 P1 and EC 135 T1 helicopters.
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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