AD 77-23-06 R2
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-8-11 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-12 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-33 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-41 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-42 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-43 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-51 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8 Series Airplanes |
Unsafe Condition
Cracks and failure of the flap link support fittings at stations Xw97.906, Xf219.498, and Xf339.723 due to use of 7075-T6 aluminum material.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Determine the material of the flap link support fittings within 1500 landings after the effective date. If fittings are 7075-T6 aluminum, perform ultrasonic inspections every 1500 landings. Replace cracked or failed fittings before further flight. Spare parts must be examined per Service Bulletin 27-260 before installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 1500 landings after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
The Boeing Company 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 other DC-8 series models 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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