AD 2021-17-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters and Airbus | Airworthiness Directives; Airworthiness Directives; Airbus Helicopters and Airbus Helicopters Deutschland GmbH (AHD) Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Airworthiness Directives; Airbus Helicopters and Airbus Helicopters Deutschland GmbH (AHD) Helicopters |
Unsafe Condition
Failure of an Emergency Flotation System (EFS) float compartment to inflate during maintenance of the EFS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspecting certain EFSs and depending on the results, marking certain parts or removing certain parts from service, as specified in EASA AD 2020-0064. The work must be accomplished by a mechanic that meets the requirements of 14 CFR part 65 subpart D. The affected float supply hose must be marked with a green dot with indelible ink if it passes an inspection, or removed from service if it fails the inspection. The EFS must be inspected and depending on the results, marked or removed from service. The float supply hose must be inspected and marked or removed from service. The EFS must be replaced with a serviceable EFS if it fails the inspection. The float supply hose must be replaced with a serviceable float supply hose if it fails the inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 100 hours time-in-service (TIS)
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Helicopters Model AS332C, AS332C1, AS332L, AS332L1, AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS-365N2, AS 365 N3, EC120B, EC130B4, EC130T2, EC 155B, EC155B1, SA-365N, and SA-365N1 helicopters; and Airbus Helicopters Deutschland GmbH (AHD) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, MBB-BK117 C-2, and MBB-BK117 D-2 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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