COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Piper PA-32 (Cherokee Six) Series Aeroplanes
AD/PA-32/81
Amdt 1
Engine Oil Cooler Hoses 4/97
Applicability: All Piper PA-32-series aircraft not incorporating oil cooler hoses to TSO C53a, Type D, standards.
Requirement: 1. To preclude the loss of engine oil contents due to an oil cooler hose rupture:
Inspect oil cooler hoses for signs of heat damage, oil contamination, brittleness, general condition, and proper installation.
For forward mounted oil coolers, ensure the minimum clearance of any hose from the nearest exhaust component is not less than 50mm (2ins). (See Figure 1).
Ensure the bend radii of the oil cooler hose assemblies is consistent with the aircraft manufacturer’s requirements.
2. Replace each oil cooler hose assembly.
Incorporation of hoses compliant with TSO C53a, Type D, is terminating action for this Directive.
Note 1: Hoses assemblies compliant with TSO C53a, Type D, must have the TSO specification number clearly marked on the hose identification band.
Note 2: When installing hoses complying with TSO C53a, Type D, ensure the bend radius is in accordance with the hose manufacturer’s requirements.
Compliance: 1. Unless previously accomplished, carry out an initial inspection within 25 hours time in service from an effective date of 27 March 1997. Thereafter, re-inspect at each re-issue of the maintenance release.
2. No later than 8 years or 1000 hours time in service since last replacement, whichever occurs first.
For affected hose assemblies that already exceed 1000 hours time in service since new or last replacement, replace within 200 hours from an effective date of 27 March 1997.
Note : FAA AD 95-26-13 Amdt 39-9472 refers.
This Amendment becomes effective on 27 March 1997.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Background: This Directive mandates oil cooler hose inspection/replacement on Piper PA 28 and 32 series aircraft in response to numerous reports of oil cooler hose rupture/failures.
Amendment 1 has been raised to clarify the inspection requirements.
The original issue of this Airworthiness Directive became effective on 5 December 1996.