AD/F100/17 - Vertical Stabiliser Torsion Box (Cth)

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

Fokker F100 (F28 Mk 100) Series Aeroplanes

AD/F100/17 Vertical Stabiliser Torsion Box 4/99 Applicability: F.28 Mk.0100 aircraft, serial numbers 11244 through 11419, and 11421. Requirement: 1. Modify the Vertical stabiliser Torsion Box in accordance with Fokker SB F100- 55-009 dated 9 April 1990; and

modify the Vertical Stabiliser Torsion Box in accordance with Fokker Service Bulletin (SB) F100-55-014 dated 29 November 1990, unless Fokker SB F100-55- 018 dated 19 May 1993 was carried out prior to accumulation of 6,000 flight cycles.

Note 1: The modification in accordance with Fokker SB F100-55-014 dated 29 November 1990 is not required if the modification in Fokker SB F100-55-018 dated 19 May 1993 is accomplished before the aircraft accumulates 6,000 flight cycles since new.

Note 2: Some aircraft had the above modifications included before delivery or as a result of compliance with other Airworthiness Directives.

2. Inspect the flanges and finger strips at Rib 5.0 of the vertical stabiliser in accordance with Fokker SB F100-55-019 Revision 1 dated 19 May 1993.

3. Modify Rib 5.0 of the vertical stabiliser in accordance with Fokker SB F100-55- 018 dated 19 May 1993.

Note 3: If during any inspection as required by this AD, cracks are found, contact the manufacturer for repair instructions.

Note 4: RLD BLA 93-069(A) refers.

Compliance: 1. Prior to accumulating 6,000 flight cycles or within 30 days, whichever occurs last.

2. Prior to accumulating 8,500 flight cycles since new or within 30 days, whichever occurs last.