AD 97-22-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | B-N Group Ltd. | BN-2 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-2 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-20 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-21 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-26 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-27 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-3 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-6 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
| aircraft | B-N Group Ltd. | BN-2A-8 | Airworthiness Directives; Pilatus Britten-Norman Ltd. Models BN-2, BN-2A, BN-2B, and BN-2T Series Airplanes |
Unsafe Condition
Cracks at the bolt-holes, elongation of the bolt holes, fretting within the holes, cracks at the rivet holes, distortion or delamination of the lugs, and incorrect bearing length or threadbound bolts in the upper engine mounting brackets on the wing front spar could cause failure of the upper engine mounting brackets, leading to structural failure of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the upper engine mounting brackets for specified defects (cracks, elongation, fretting, distortion, delamination, incorrect bearing length, or threadbound bolts). If defects are found, immediately replace damaged brackets, bolts, and bushes with improved parts per Pilatus Modification NB/M/1147. If no defects, perform repetitive inspections until 2,000 hours time-in-service after AD effective date, then accomplish the modification.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight unless the actions are accomplished within the specified compliance period: initial inspection must be done before further flight, and modification must be done within 2,000 hours time-in-service after November 24, 1997.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pilatus Britten-Norman Ltd. Models BN-2 (serial numbers 1 through 2033), BN-2A and BN-2B (serial numbers 1 through 2116), and BN-2T (serial numbers 419, and 2030 through 2033).
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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