# Proposed AD 97-CE-111-AD: Pilatus Britten-Norman Ltd. BN-2, BN- 2A, BN-2B, and BN-2A MK.III Series Airplanes.

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-18-07
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 9, 1998, 63 FR 31370
- Comments due: July 17, 1998
- Became: [AD 98-18-07](https://openairdocs.org/ad/98-18-07)
- Docket: 97-CE-111-AD
- FR document: 98-15203
- Official PDF: https://openairdocs.org/files/sha256/90/81/9081cc06cdd9c82ed55729126fda727be4a137a30626b8cb29f0294b891baa38 (from https://www.govinfo.gov/content/pkg/FR-1998-06-09/pdf/98-15203.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/06/09/98-15203/airworthiness-directives-pilatus-britten-norman-ltd-bn-2-bn--2a-bn-2b-and-bn-2a-mkiii-series
- Page: https://openairdocs.org/proposed/97-CE-111-AD

## Summary

This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Pilatus Britten-Norman Ltd. (PBN) BN- 2, BN-2A, BN-2B, and BN-2A MK.III series airplanes that are equipped with a PBN Modification NB/M/256, 50A generator system. The proposed action would require inspecting the airplanes that are equipped with a 50A generator system for a 70A generator. If a 70A generator is installed, the proposed action would require replacing the 70A generator with a 50A generator, or (for the BN-2, BN-2A, and BN-2B series only) upgrading the airplane generator system to a 70A system to match the 70A generator. The proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified by the proposed AD are intended to prevent damage to the components of the electrical system, which could result in electrical system failure during critical phases of flight.

## Notices in this docket

- Jun 9, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-15203, comments due Jul 17, 1998 (https://www.federalregister.gov/documents/1998/06/09/98-15203/airworthiness-directives-pilatus-britten-norman-ltd-bn-2-bn--2a-bn-2b-and-bn-2a-mkiii-series)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.