AD 89-13-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; McDONNELL DOUGLAS C-9-81, -82, and -87 Series Airplanes |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; McDONNELL DOUGLAS C-9-81, -82, and -87 Series Airplanes |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; McDONNELL DOUGLAS C-9-81, -82, and -87 Series Airplanes |
Unsafe Condition
Wheel failure due to cracks in the main landing gear wheels with Part Numbers 5004320-2, -3, -4, -5, -6, and -7.
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Required Actions
Inspect the wheel assembly for cracks per Loral Service Bulletin; replace key boss screws if no cracks found; replace wheel before further flight if cracks detected. Revise maintenance program to include inspections every fourth tire change or every 1,500 landings, whichever comes first.
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Compliance Time
Prior to 2,000 landings on the wheel or within 350 landings after the effective date (July 24, 1989), whichever occurs later, unless inspected within last 700 landings. Maintenance program revision due within 90 days after effective date.
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Affected Aircraft
McDONNELL DOUGLAS DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-87 (MD-87) series airplanes with Loral main landing gear wheels, Part Numbers 5004320-2, -3, -4, -5, -6, and -7.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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