1AD/PA-24/24 - Propeller Inspection and Operating Instructions

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Image unavailable in extracted text
Piper PA-24 (Comanche) Series Aeroplanes

AD/PA-24/24 Propeller Inspection and Operating Instructions 2/70

Applicability: Model PA-24 fitted with McCauley 2D36C14/78 KM-4 propellers.

Requirement: 1. Visually inspect blades for damage with the aid of a 10 power (2 1/2X) glass for defects such as erosion, scratches, nicks, cracks, etc. Rectify as necessary. After rectification dye penetrant inspect the entire blade from hub to tip.

Note: This work can be performed without removing the propeller from the engine.

2. Install a placard on the instrument panel adjacent to the RPM indicator reading as follows:

“AVOID CONTINUOUS OPERATION WHILE DESCENDING BETWEEN 2250 AND 2550 RPM WITH MANIFOLD PRESSURE SETTING BELOW 15 INCHES Hg”.

Note: McCauley Service Bulletin No. 76 also refers.

Compliance: Within 25 hours time in service after 29 January 1970.