AD 83-11-01 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | AS350B | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS350B, \\nAS350C, AS350D, and AS350D-1 Helicopters |
| aircraft | Airbus Helicopters | AS350C | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS350B, \\nAS350C, AS350D, and AS350D-1 Helicopters |
| aircraft | Airbus Helicopters | AS350D | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS350B, \\nAS350C, AS350D, and AS350D-1 Helicopters |
| aircraft | Airbus Helicopters | AS350D1 | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS350B, \\nAS350C, AS350D, and AS350D-1 Helicopters |
Unsafe Condition
Failure of the Air Cruiser emergency flotation system due to inadequate rerouting and protection of the electrical harness and mechanical cable, insufficient clamping of float bottle valve assembly and cross tube squib harness, and improper grounding.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Reroute and add 1/4 inch heat shrink tubing to the electrical harness per Figure 1; add 3/4 inch heat shrink tubing to encase both mechanical cable and electrical harness ensuring overlap with the 1/4 inch tubing; install four MS21919WDG2 clamps on each float bottle valve assembly side plate; install three MS21919WDG36 clamps on each cross tube for squib harness support with ground strap clamped at the lowest point; inspect installation and perform electrical tests per Air Cruiser's Overhaul Manual or FAA equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to further overwater flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Societe Nationale Industrielle Aerospatiale (SNIAS) Model AS350B, AS350C, AS350D, and AS350D-1 helicopters with Air Cruiser flotation kits (STC SH4032SW or SH2825SW) installed and delivered by AHC before April 4, 1983.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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