AD 71-09-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 320 | Airworthiness Directives; CESSNA Model 320 Series Airplanes |
| aircraft | Cessna Aircraft Company | 320-1 | Airworthiness Directives; CESSNA Model 320 Series Airplanes |
| aircraft | Cessna Aircraft Company | 320A | Airworthiness Directives; CESSNA Model 320 Series Airplanes |
| aircraft | Cessna Aircraft Company | 320B | Airworthiness Directives; CESSNA Model 320 Series Airplanes |
| aircraft | Cessna Aircraft Company | 320C | Airworthiness Directives; CESSNA Model 320 Series Airplanes |
| aircraft | Cessna Aircraft Company | 320D | Airworthiness Directives; CESSNA Model 320 Series Airplanes |
| aircraft | Cessna Aircraft Company | 320E | Airworthiness Directives; CESSNA Model 320 Series Airplanes |
| aircraft | Cessna Aircraft Company | 320F | Airworthiness Directives; CESSNA Model 320 Series Airplanes |
Unsafe Condition
Nacelle electrical failures and inflight electrical fires due to charred, burnt, or heat hardened insulating material of electrical wiring, grommets, clamps, or deteriorated or improperly installed heat shields in the engine nacelles between the canted bulkhead and firewall.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours' time in service after the effective date, and every 100 hours' time in service thereafter, visually inspect the insulating material of electrical wiring, grommets, clamps, and heat shields for specified conditions. Replace defective parts with airworthy parts before further flight. By January 1, 1972, modify engine nacelles per Cessna Service Letter ME71-6 and Service Kit SK320-53 or approved method. Inspections under Paragraph A are waived after modification.
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 the effective date of this AD, and thereafter at intervals not to exceed 100 hours' time in service from the date of the last inspection. The modification must be completed by January 1, 1972.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Cessna Model 320 series airplanes including 320, 320-1, 320A, 320B, 320C, 320D, 320E, 320F.
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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