AD 2000-22-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | DC-9-10 | Airworthiness Directives; McDonnell Douglas Model DC-9-10, -9-20, -9-30, -9-40, and -9-50 Series Airplanes and C-9 (Military) Airplanes |
Unsafe Condition
Failure of the outboard flap idler hinge fitting due to fatigue cracking, which could result in a deflected flap causing asymmetric lift and reduced controllability and structural integrity of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Measure the diameter of the hole counterbore of the outboard idler hinge fitting of the left and right wing flap. Perform repetitive high frequency eddy current inspections (HFEC) to detect cracks at the flap idler hinge fitting, if necessary. Replace the flap idler hinge fitting with a new like part if any crack is detected.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 90 days after the effective date of this AD or before the accumulation of 24,000 total landings, whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas Model DC-9-10, -9-20, -9-30, -9-40, and -9-50 series airplanes and C-9 (military) airplanes, as listed in Boeing Alert Service Bulletin DC9-57A218, dated September 20, 2000; certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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