COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Pratt and Whitney Piston Engines
AD/PW-P/7 Operating Restrictions - Placarding NK
Applicability: R1830 series. (Series 'C' 16:9 gearing).
Requirement: 1. The following operating restrictions shall be observed in all aircraft in which are installed Pratt & Whitney R1830 engines fitted with the propellers, blades or non- splined reduction gears as listed below:-
Installation Conditions | Operating Restrictions |
(a) 23E50 propellers installed and engines fitted with non-spline type reduction gears | Avoid continuous operation within the ranges of 1550 to 1650 r.p.m. |
(b) Blades 6353A-19 6153A-18 6261A-0 6461A-0 fitted and vibration absorber as described in Hamilton SB No. 96 not installed. | Avoid continuous operation within the ranges of 1900 to 2050 r.p.m. |
(c) Engines fitted with non- spline-type reduction gear (regardless of what propellers are installed) | Avoid take-off operation within the ranges of 2450 to 2700 r.p.m. |
2. A suitable placard defining the restrictions shall be displayed in all aeroplanes affected.
or ANO 106.1.12.3.7.1.
Compliance: Forthwith.