AD 2007-21-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | DC-8-53 | Airworthiness Directives; McDonnell Douglas Model DC-8-53, DC-8-55, DC-8F-54, and DC-8F-55 Airplanes; and Model DC-8-60, DC-8-60F, DC-8-70, and DC-8-70F Series Airplanes |
Unsafe Condition
Stress corrosion cracking of the tee or angle doubler installed on the flat aft pressure bulkhead, which could progress and damage adjacent structure, leading to loss of structural integrity.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the airplane configuration to determine if a repair has been installed. Perform repetitive inspections for cracking of the tee or angle doubler. Take corrective actions if necessary. The pressure test specified in Boeing Alert Service Bulletin DC8-53A081 is not required by this AD.
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Compliance Time
Before further flight
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Affected Aircraft
McDonnell Douglas Model DC-8-53, DC-8-55, DC-8F-54, DC-8F-55, DC-8-60, DC-8-60F, DC-8-70, and DC-8-70F series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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