AD/BEECH 90/57 Amdt 4 - Fuselage Fatigue Life Limitations
1AD/BEECH 90/57 Amdt 4 - Fuselage Fatigue Life Limitations
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
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Beechcraft 90 and 65-90 (King Air) Series Aeroplanes
AD/BEECH 90/57
Amdt 4
Fuselage Fatigue Life Limitations 4/85
Applicability: All model F90 series.
Requirement: 1. Retire the cabin door upper locking pins P/N 50-430177-3 and lower locking pins P/N 50-430018-9 from service.
- Retire the pressure cabin from service.
Compliance: 1. For Para. 1 - Upon or prior to the locking pins achieving 4500 pressurised flight cycles.
- For Para. 2 - Before exceeding 8200 pressurised flights.
Note: These lives may be revised following the completion of further tests and analysis currently being carried out by the manufacturer.
Background: This amendment deletes the retirement life requirements for cabin and cockpit side windows. All model F90 aircraft now have the stretched acrylic failsafe windows installed, AD/Beech 90/70 refers.