AD 60-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky Aircraft Corporation | S-58A | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58B | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58BT | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58C | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58D | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58DT | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58E | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58ET | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58F | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-58FT | Airworthiness Directives; Sikorsky All Model S-58 Helicopters |
Unsafe Condition
Breakage of the cable connected to the L(plus) terminal of Eclipse Pioneer Voltage Regulator P/N 1597-1, resulting in complete loss of electrical power and excessive battery fumes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove existing clamp securing voltage regulator cables to the airframe 12 inches from the regulator base; install cable clamp MS 21919DG5 or equivalent to secure cables to regulator base using an existing hole, ensuring cable slack relieves terminal lug tension without altering routing; add additional clamp if unsupported cable length remains beyond the regulator, ensuring regulator shockmount motion is not restricted.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 50 hours' time in service after effective date
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Affected Aircraft
Sikorsky S-58A, S-58B, S-58BT, S-58C, S-58D, S-58DT, S-58E, S-58ET, S-58F, S-58FT, S-58G, S-58H helicopters
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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