AD 2001-26-24

final rule
Data completeness: 70%

Airworthiness Directives; McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 Series Airplanes; and C-9 Airplanes

AD Number
2001-26-24
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 99-NM-290-AD
FR Citation
67 FR 497

Applicability

TypeManufacturerModelDetails
aircraft McDonnell Douglas DC-9-10 Airworthiness Directives; McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 Series Airplanes; and C-9 Airplanes

Unsafe Condition

Overheating of the ballast transformers due to aging fluorescent tubes causing a higher power demand, which could result in smoke in the cockpit.

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

Required Actions

Replace the transformer ballast assembly in the pilot's console with a new, improved ballast assembly.

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-9-10, -20, -30, -40, and -50 series airplanes; and C-9 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-9-10

Related Airworthiness Directives

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final rule

Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-10 Series Airplanes, DC-9-30 Series Airplanes, DC-9-81 (MD-81) Airplanes, DC-9-82 (MD-82) Airplanes, DC-9-83 (MD-83) Airplanes, DC-9-87 (MD-87) Airplanes, MD-88 Airplanes, and MD-90-30 Airplanes

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Effective: Jul 6, 2010 Category: aircraft

2008-18-06

final rule

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2007-17-18 Recurring

final rule

Airworthiness Directives; McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 Series Airplanes; Model DC-9-81 (MD-81), -82 (MD-82), -83 (MD-83), and -87 (MD-87) Airplanes; and Model MD-88 Airplanes

Unsafe Condition: unsafe condition.

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2006-21-06

final rule

Airworthiness Directives; McDonnell Douglas Model DC-9-10 Series Airplanes; DC-9-20 Series Airplanes; DC-9-30 Series Airplanes; DC-9-40 Series Airplanes; and DC-9-50 Series Airplanes

Unsafe Condition: The FAA is superseding an existing airworthiness directive (AD), which applies to certain McDonnell Douglas transport category airplanes. That AD currently requires, among other things, revision of...

Effective: Nov 29, 2006 Category: aircraft

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