AD 2004-18-11

Recurring final rule
Data completeness: 70%

Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes

AD Number
2004-18-11
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 2002-NM-345-AD
FR Citation
69 FR 54201

Applicability

TypeManufacturerModelDetails
aircraft McDonnell Douglas DC-9-14 Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes

Unsafe Condition

Fatigue cracking of the counterbore of the two lower mounting holes and the lower forward edge of the outboard idler hinge fitting of the left and right wing flap at station Xw=333.148, which could result in a deflected flap causing asymmetric lift and reduced controllability and structural integrity.

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

Required Actions

Perform repetitive inspections for cracking of the specified components and replace the flap idler hinge fitting with a new or serviceable part if cracking is found.

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

Compliance Time

Within the specified inspection intervals as outlined in the AD.

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

Affected Aircraft

McDonnell Douglas Model DC-9-14, DC-9-15, DC-9-15F, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes, as listed in Boeing Service Bulletin DC9-57-225, dated December 10, 2002.

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

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View Official Source ↗ Find More ADs for McDonnell Douglas DC-9-14

Related Airworthiness Directives

2010-23-10 Recurring

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Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes

Unsafe Condition: which could cause a possible fuel leak, damage to the wing skin, and structural failure of the upper cap, and result in reduced structural integrity of the airplane.

Effective: Dec 14, 2010 Category: aircraft

2009-24-21 Recurring

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Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and McDonnell Douglas Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes

Unsafe Condition: could result in a collapsed MLG during takeoff or landing, and possible reduced structural integrity of the airplane.

Effective: Jan 8, 2010 Category: aircraft

2009-03-03

final rule

Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes

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Effective: Mar 31, 2009 Category: aircraft

2006-18-05

final rule

Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; Model DC-9-21 Airplanes; Model DC-9-30 Series Airplanes; Model DC-9-41 Airplanes; and Model DC-9-51 Airplanes

Unsafe Condition: which could cause electrical arcing and consequent fire on the airplane.

Effective: Oct 11, 2006 Category: aircraft

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