AD Amdt-39-9928

final rule
Data completeness: 70%

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

AD Number
Amdt-39-9928
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 96-NM-99-AD
FR Citation
62 FR 6708

Applicability

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

Unsafe Condition

Failure of the outboard flight spoiler actuators due to insufficient protection from fatigue cracking between the actuators and the aft spar webs of the wings.

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

Required Actions

Install external protective doublers between the outboard flight spoiler actuators and the aft spar webs or replace the pistons with improved pistons. Ensure installations with specified part numbers receive proper credit to avoid unnecessary additional work.

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, C-9 (Military) series, and MD-88 airplanes with applicable flight spoiler actuator assemblies.

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

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