AD 91-03-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Skyship Services | Skyship 600 | Airworthiness Directives; AIRSHIP INDUSTRIES Model 600 Airships (all serial numbers) |
Unsafe Condition
Ignition control unit failure and subsequent total loss of engine power.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove all ignition control units Part Number ASI/L/80 Issue D, MOD 1 or 2, and replace with Part Number ASI/L/80 Issue E, MOD 3 units as per Airship Industries Service Bulletin REF 600-74-314, Revision 1. Special flight permits may be obtained under FAR 21.197 and 21.199 to operate to a base for compliance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 250 hours time-in-service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Skyship Services Model Skyship 600 airships (all serial numbers)
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.