AD Amdt-39-11404

final rule
Data completeness: 70%

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

AD Number
Amdt-39-11404
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 99-NM-186-AD
FR Citation
64 FR 61477

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 (Military) Airplanes

Unsafe Condition

Discrepancies in the wiring of the fuel quantity indicating system (FQIS) in the forward cargo compartment could result in excessive electrical energy entering the fuel tanks, creating a potential ignition source.

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

Required Actions

Conduct a one-time general visual inspection of the FQIS wiring in the forward cargo compartment to detect discrepancies. Take corrective actions if any discrepancies are found.

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 (military) 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

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