AD 99-21-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A321-111 | Airworthiness Directives; Airbus Model A321 Series Airplanes |
| aircraft | Airbus | A321-112 | Airworthiness Directives; Airbus Model A321 Series Airplanes |
| aircraft | Airbus | A321-131 | Airworthiness Directives; Airbus Model A321 Series Airplanes |
| aircraft | Airbus | A321-211 | Airworthiness Directives; Airbus Model A321 Series Airplanes |
| aircraft | Airbus | A321-231 | Airworthiness Directives; Airbus Model A321 Series Airplanes |
Unsafe Condition
Tail scrapes during take-off and landing can cause structural damage to the rear fuselage between frames 62 and 64, leading to undetected loss of structural integrity which could precipitate a structural failure during subsequent operation.
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Required Actions
Reinforce the fuselage structure between frames 62 and 64 by replacing lower frame sections, installing new hydraulic pipe supports, and performing rotating probe inspections to detect cracking. Repairs must be accomplished per FAA or DGAC-approved methods.
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Compliance Time
Within six years after the effective date of this AD (October 28, 1999)
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Affected Aircraft
Airbus Model A321 series airplanes except those with Modification 25791 or Service Bulletin A320-53-1130 (Rev 01) completed
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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