AD Amdt-39-9174

final rule
Data completeness: 70%

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

AD Number
Amdt-39-9174
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 94-NM-149-AD
FR Citation
60 FR 15033

Applicability

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

Unsafe Condition

Incorrectly manufactured motor shafts in horizontal stabilizer primary trim motors could fail prematurely, causing primary trim motor failure.

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

Required Actions

Inspect and replace certain suspect horizontal stabilizer primary trim motors. Identify suspect motors using manufacturer's instructions.

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-9-80 series airplanes with suspect horizontal stabilizer primary trim motors.

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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