AD 83-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | BAC 1-11 200 Series | Airworthiness Directives; BRITISH AEROSPACE Model BAC 1-11 200 and 400 Series Airplanes |
| aircraft | Airbus SAS | BAC 1-11 400 Series | Airworthiness Directives; BRITISH AEROSPACE Model BAC 1-11 200 and 400 Series Airplanes |
Unsafe Condition
Collapse of the nose landing gear due to failure of Tonks spring discs (P/N AK43-1283), Terry discs (P/N AB43-2579), and Spring Master discs (P/N AB43-2745).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace Tonks spring discs prior to specified landing limits. Functionally test discs in accordance with Service Bulletin 32-A-PM5191. Replace Terry and Spring Master discs before their respective landing limits. Conduct recurring functional tests at intervals not exceeding 500 landings until replacement. Incorporate helical coil springs via BAe Modification 32-PM5191 to terminate AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Accomplish actions prior to specified landing limits or within 500 landings after January 9, 1984, whichever comes later. Testing must occur prior to specified landing milestones or within 500 landings after the effective date, whichever comes later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
British Aerospace Model BAC 1-11 200 and 400 Series airplanes, all serial numbers, certificated in all categories.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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