AD Amdt-39-10626

Recurring final rule
Data completeness: 70%

Airworthiness Directives; McDonnell Douglas Model DC-9 and DC-9- 80 Series Airplanes, Model MD-88 Airplanes, and C-9 (Military) Series Airplanes

AD Number
Amdt-39-10626
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 96-NM-203-AD
FR Citation
63 FR 34585

Applicability

TypeManufacturerModelDetails
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 cracks in the fuselage skin and/or longerons due to material fatigue caused by installation preload and cabin pressurization cycles.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Conduct repetitive high frequency eddy current inspections of specified fuselage areas to detect cracks. Install a preventative modification to terminate repetitive inspections. Perform various follow-on actions as required.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

McDonnell Douglas Model DC-9, DC-9-80 series, Model MD-88, and C-9 military series airplanes affected by the STC/equipment trigger specified in the AD.

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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