AD 76-02-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | B-N Group Ltd. | BN-2A | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-2 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-20 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-21 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-26 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-27 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-3 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-6 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-8 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-9 | Airworthiness Directives; Britten Norman Models BN-2A and BN-2A Mark III Series Airplanes |
Unsafe Condition
Failure of the engine mounting frame and possible physical separation of the engine due to cracks in the welds around the periphery of the mounting pads or non-conformance to specified dimensions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 hours' time in service after the effective date, inspect the welds on the engine mounting frame for cracks and mounting pads for conformance to dimensions in Service Bulletin BN-2/SB.72. If two or more pads do not conform, replace the frame before further flight. If one pad does not conform, daily pre-flight inspections are required until replacement. Replace the frame immediately if cracks are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 10 hours' time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
B-N Group Ltd. Models BN-2A and BN-2A Mark III Series airplanes equipped with engine mounting frames P/N NB-20-D-5209, NB-20-G-1901, NB-20-G-5231, or NB-51-H-1021.
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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