AD 2021-04-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model AS350B | Airworthiness Directives; Airbus Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
Debonding of the tail rotor (T/R) blade leading edge protection shields due to rapid debonding caused by humidity/liquid water reaching the bonding surface between the leading edge and blade spar.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Repetitively visually inspect each T/R blade leading edge protection shield and repetitively tap inspect each T/R blade leading edge. Replace each affected part with a serviceable part.
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
Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350D, AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters with certain part-numbered T/R blades installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.