AD/BAe 146/75 - Removal of Altitude Limitation in Icing Conditions (Cth)

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES

British Aerospace BAe 146 Series Aeroplanes

AD/BAe 146/75 Removal of Altitude Limitation in Icing Conditions

11/99

Applicability: British Aerospace BAe 146-100, -200 and -300 aircraft with AlliedSignal ALF502R series engines.

Requirement: 1. For each engine installation, incorporate modifications to prevent uncommanded power reductions in icing conditions in accordance with British Aerospace Service Bulletin 71-72-30473A, Revision 1 dated 2 November 1998, Accomplishment Instructions, Paragraph 2.A.

Note 1: AD/ALF/16 mandates engine specific modifications to improve the fan core inlet anti-icing capability.

Note 2: CAA (UK) AD 004-02-94R1 and FAA AD 99-15-06 also refer.

2. For fully modified aircraft, remove the existing altitude limitation and N2 limitation placards in accordance with British Aerospace Service Bulletin 71-72- 30473A, Revision 1 dated 2 November 1998, Accomplishment Instructions, Paragraph 2.B, Item 1.

For the purpose of this AD, a "fully modified aircraft" is one that incorporates the anti-icing improvement modifications referenced in Requirement 1 on all four engines.

3. Ensure the respective aircraft flight manuals comply with the configuration specified in British Aerospace Service Bulletin 71-72-30473A, Revision 1 dated 2 November 1998, Accomplishment Instructions, Paragraph 2.B, Item 2.

Upon compliance with Paragraph 2.B, Item 2, remove the following "green" page amendments, titled Maximum Operating Altitude from the respective aircraft flight manuals: