AD Amdt-39-10919
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | DC-9 and DC-9- 80 | Airworthiness Directives; McDonnell Douglas Model DC-9 and DC-9- 80 Series Airplanes, Model MD-88 Airplanes, and C-9 (Military) Series Airplanes |
Unsafe Condition
Fatigue cracking of the lower left nose of certain longerons and the attaching frames, which could result in reduced structural integrity of the fuselage and consequent loss of pressurization of the airplane.
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Required Actions
Perform a one-time visual inspection to detect fatigue cracking of the lower left nose of certain longerons and the attaching frames; repair, if necessary; and install a preventive modification.
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Compliance Time
Within 12,000 landings or at the next scheduled repetitive corrosion task inspection, whichever occurs first.
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Affected Aircraft
McDonnell Douglas Model DC-9 and DC-9-80 series airplanes, Model MD-88 airplanes, and C-9 (military) series airplanes, as listed in specific service bulletins.
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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