Piper Comanche PA-24 Service Manual page 172

(j) Each Five (5) Years
(k) Each Six (6) Years
(l) Each Seven (7) Years
III - INSPECTION
PIPER COMANCHE SERVICE MANUAL
1 In PA-24s and PA-24-250s equipped with McCauley propellers,
replace propeller each five years or each 1000 or 1200 hours. (Verify TBO in
McCauley Service Bulletin No. 137AD, or later.)
2 In PA-24s equipped with Hartzell propellers,
five years or each 2000 hours. (Verify TBO in latest revision of Hartzell Service
Letter No. HC-SL-61-61Y, Revision 2 or later.)
3 In PA-24-250s equipped with Hartzell propellers and in PA-24-400s,
or replace propeller each five years or each 1000 hours. (Verify TBO in Hartzell
Service Letter No. HC-SL-61-61Y, Revision 2 or later.)
4 In PA-24-260s, overhaul or replace Hartzell propellers each five or six years or
each 2000 or 2400 hours. (Refer to Hartzell Service Letter No. HC-SL-61-61Y,
Revision 2 or later, to determine specific requirements for individual airplanes.)
5 If installed, for each oxygen system outlet, inspect outlet and especially rubber
components for condition and operation. Replace rubber components or entire
outlet on condition.
1 In PA-24-260s, overhaul or replace Hartzell propellers each five or six years or
each 2000 or 2400 hours. (Refer to Hartzell Service Letter No. HC-SL-61-61Y,
Revision 2 or later, to determine specific requirements for individual airplanes.)
2 In PA-24s and PA-24-250s equipped with a Woodward propeller governor, for
airplanes operated less than 120 hours per year,
propeller governor each six years or at engine overhaul, whichever comes first.
(Verify TBO in Woodward Service Bulletin No. 33580-M, or later.)
NOTE: Woodward propeller governors installed in airplanes operated 120
hours per year or more should be overhauled at engine TBO.
3 For airplanes equipped with Aero Accessories, Inc. vacuum pump(s),
shear coupling each six (6) years time-in-service.
4 For airplanes equipped with rechargeable (gauged) fire extinguishers,
years time-in-service, completely discharge the extinguisher and have it
professionally inspected and recharged.
Each 2000 hours or seven (7) years, whichever occurs first, remove interior
panels and headliner and conduct detailed inspection of aircraft structure (skin,
bulkheads, stringers, etc.) for condition and security. Inspection of structure
concealed by headliner may be accomplished by alternate means (i.e. - through
the use of a borescope) without removing the headliner, providing access is
obtained to all concealed areas and borescope provides sufficient detail to
adequately accomplish the inspection.
1D34
overhaul or
overhaul or replace propeller each
overhaul or replace the
replace the
overhaul
each six
04/01/09