1AD/PA-28/88 Amdt 3 - Aft Centre of Gravity Restriction

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Piper PA-28 Series Aeroplanes

AD/PA-28/88

Amdt 3

Aft Centre of Gravity Restriction 7/91

Applicability: All PA 28-161 and PA 28-181 listed by Serial No in Piper SB No 916B except those which have incorporated AD/PA-28/88 Amdt 2.

Requirement: 1. Align wing tips in accordance with a CAA approved Engineering Order; or

Note: NAVAIR MAINTENANCE Engineering Order No 191 is approved by the CAA for this purpose. (Telephone 02-7900942).

Alternatively, install stall strips in accordance with Piper SB No 916B and check that the aircraft has improved stall handling characteristics.

Note: Either of these actions terminates the necessity for a temporary aft centre of gravity restriction.

2. Remove cockpit placard and any temporary Flight Manual amendment restricting the aft centre of gravity limit.

Compliance: Not later than 1 September 1991.

Background: Piper Aircraft Corporation has learned that PA 28 aircraft identified in Piper SB No 916B may exhibit an undesirable tendency to roll to the right just before and/or during the stall. This may result in a bank angle up to 60º. Initial issue of this Directive imposed a temporary aft centre of gravity restriction which was superseded by the requirement for wing stall strips. NAVAIR has demonstrated that the roll tendency is due to incorrect alignment of wing tips and correcting the alignment eliminates the roll tendency.