AD 94-13-07

final rule
Data completeness: 70%

Airworthiness Directives; MCDONNELL DOUGLAS Model MD-11 Series Airplanes

AD Number
94-13-07
Status
final_rule
Effective Date
Product Category
aircraft
Docket
93-NM-168-AD
FR Citation
(Federal Register: June 23, 1994 (Volume 59, Number 120))

Applicability

TypeManufacturerModelDetails
aircraft The Boeing Company MD-11 Airworthiness Directives; MCDONNELL DOUGLAS Model MD-11 Series Airplanes
aircraft The Boeing Company MD-11F Airworthiness Directives; MCDONNELL DOUGLAS Model MD-11 Series Airplanes

Unsafe Condition

Cracking in the aft engine mount link assemblies, part numbers 221-0262-501 and 221-0262-503, caused by physical defects from the forging process, could result in loss of engine load support capability and possible engine separation.

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Required Actions

Inspect aft engine mount link assemblies at all three positions to determine serial numbers. Remove suspect links (serial numbers WPC0001-WPC1063 or M1064-M1255), perform fluorescent penetrant and eddy current inspections. Replace cracked/defective links with non-suspect serial numbers or reidentify/reinstall uncracked links. Submit inspection findings report within 10 days.

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Compliance Time

Within 60 days after July 8, 1994 for airplanes with engines experiencing a high power surge in the last 12 months prior to the effective date; within 120 days after July 8, 1994 for others. Prior to further flight for actions in paragraphs (b) and (c).

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Affected Aircraft

McDonnell Douglas Model MD-11 series airplanes with fuselage numbers 449, 456-461, 463-465, 472, 473, 475, 477, 480, 481, 484, 485, 487, 489, 490, 494-496, 498, 502, 506, 509-512, 514, 516, 518, 519, 522, 525, 532, 533, 536, 538, 539, 541-544, and 546.

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Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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