AD 98-04-21

final rule
Data completeness: 70%

Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.

AD Number
98-04-21
Status
final_rule
Effective Date
Product Category
aircraft
Docket
97-CE-54-AD
FR Citation
Federal Register: February 17, 1998 (Volume 63, Number 31)

Applicability

TypeManufacturerModelDetails
aircraft B-N Group Ltd. BN-2A Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-2 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-20 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-21 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-26 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-27 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-3 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-6 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-8 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.
aircraft B-N Group Ltd. BN-2A-9 Airworthiness Directives; Pilatus Britten-Norman Limited Models BN-2A, BN-2B, and BN-2T Airplanes.

Unsafe Condition

Without adequate AFM revisions, pilots may remain in hazardous icing conditions as they lack visual cues and procedures to identify and exit icing beyond certification parameters.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

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