AD 83-03-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | B-N Group Ltd. | BN2A MK. III | Airworthiness Directives; Britten-Norman Model BN-2A MK III Trislander Series Airplanes |
| aircraft | B-N Group Ltd. | BN2A MK. III-2 | Airworthiness Directives; Britten-Norman Model BN-2A MK III Trislander Series Airplanes |
| aircraft | B-N Group Ltd. | BN2A MK. III-3 | Airworthiness Directives; Britten-Norman Model BN-2A MK III Trislander Series Airplanes |
Unsafe Condition
The main undercarriage shock absorber support ring may separate from the inside of the undercarriage extension tube due to loose rivets.
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Required Actions
Visually inspect the rivets retaining the main undercarriage shock absorber internal support ring to the main undercarriage leg extension tube in accordance with Britten-Norman Service Bulletin BN-2/SB.139. If loose rivets are found, replace all three rivets before further flight. For airplanes with certain landing counts, replace all three rivets within specified intervals.
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Compliance Time
Within the next 50 landings on airplanes with 3,000 or more landings on the effective date, or prior to 3,050 landings on those with less than 3,000 landings. For airplanes with 15,000 or more landings, within the next 50 landings or prior to 15,050 landings. Thereafter, inspections at intervals not exceeding 1,000 landings.
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Affected Aircraft
B-N Group Ltd. Model BN2A MK. III, BN2A MK. III-2, BN2A MK. III-3 Trislander Series airplanes (all serial numbers).
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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