AD 2001-09-18

Recurring final rule
Data completeness: 70%

Airworthiness Directives; McDonnell Douglas Model DC-9-80 Series Airplanes and Model MD-88 Airplanes

AD Number
2001-09-18
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 99-NM-164-AD
FR Citation
66 FR 23840

Applicability

TypeManufacturerModelDetails
aircraft McDonnell Douglas DC-9-80 Airworthiness Directives; McDonnell Douglas Model DC-9-80 Series Airplanes and Model MD-88 Airplanes

Unsafe Condition

Fatigue cracking of the main landing gear (MLG) pistons, which could result in failure of the pistons and subsequent damage to the airplane structure or injury to airplane occupants.

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

Required Actions

Repetitive dye penetrant and magnetic particle inspections to detect cracks of the MLG pistons; repair and replacement of discrepant parts; installation of a preventative modification; and an optional terminating action for certain MLG pistons.

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

Compliance Time

Within 1,500 landings or 12 months after the effective date of this AD for MLG pistons that have not been inspected.

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

Affected Aircraft

McDonnell Douglas Model DC-9-80 Series Airplanes and Model MD-88 Airplanes.

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

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for McDonnell Douglas DC-9-80

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Airworthiness Directives; McDonnell Douglas Model DC-9-80 Series Airplanes and Model MD-88 Airplanes

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Amdt-39-11428

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Effective: Dec 27, 1999 Category: aircraft

Amdt-39-11201 Recurring

final rule

Airworthiness Directives; McDonnell Douglas Model DC-9-80 Series Airplanes, Model MD-88 Airplanes, and Model MD-90-30 Airplanes

Unsafe Condition: could result in failure of the piston, and consequent damage to the airplane structure or injury to the passengers and flightcrew.

Effective: Jul 28, 1999 Category: aircraft

View all McDonnell Douglas ADs →