AD 84-23-06 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | B-N Group Ltd. | BN2A MK. III | Airworthiness Directives; Pilatus Model BN-2A MK. 111 Series Airplanes |
| aircraft | B-N Group Ltd. | BN2A MK. III-2 | Airworthiness Directives; Pilatus Model BN-2A MK. 111 Series Airplanes |
| aircraft | B-N Group Ltd. | BN2A MK. III-3 | Airworthiness Directives; Pilatus Model BN-2A MK. 111 Series Airplanes |
Unsafe Condition
Failure of the upper engine to wing mounting brackets could possibly cause structural failure of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the upper engine to wing mounting brackets for minimum lug bolt hole-to-edge distance, elongation of bolt holes, distortion, delamination, cracks, flaking, and corrosion; inspect bolts for correct bearing length; inspect for loose and fretted bushings. Correct defects by modifying or replacing parts as specified in Pilatus SB No. BN-2/SB.61, Issue 5, including adjusting bolt holes, replacing corroded or damaged parts, and modifying cracked brackets on the same engine installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Required initially upon the accumulation of 500 hours time-in-service (TIS) or within the next 50 hours TIS after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 500 hours TIS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pilatus Model BN-2A MK. 111 Series Airplanes (all serial numbers)
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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