AD 61-06-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-8-11 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-12 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-21 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-31 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-32 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-33 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-41 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-42 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-43 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
| aircraft | The Boeing Company | DC-8-51 | Airworthiness Directives; DOUGLAS All DC-8 Series Aircraft |
Unsafe Condition
Loosened rudder boost piston end assembly locknut P/N NAS 509-16 and improper installation or safetying of lockwasher P/N NAS 513-16, which may allow piston rotation out of proper position.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect locknut P/N NAS 509-16 and lockwasher P/N NAS 513-16 for looseness, proper installation, and safetying. Ensure lockwasher is not installed backwards and tang engages piston end notch. Correct discrepancies per DC-8 Overhaul Manual and Douglas Alert Bulletin before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 20 hours' time in service
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Douglas DC-8 Series Aircraft including models DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, DC-8-43, DC-8-51, and others as listed.
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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