NOTE: A battery log is provided for recording battery condition.
(b)
Fuel Nozzles
Left Right
(1)
At first 100hoursafterreceiptof new aircraftand newor overhauled enginesa flow check of the fuel nozzles is recommended. After this first check refer to the 300 hour SpecialInspection.
(c)
Flap Transmission (See 500 hour Special Inspection.)
(d)
Engines (PT6A)
Left Right
(1)
At first 100 hoursafter receipt of new aircraftand new or overhauled engines,retorque
enginemount bolts (F.S. 106.00) is recommended. Afterthis first check refer to the 300 hour Special Inspection.
(e)
LandingGear
NoseLeft Right
(1)
Inspectmaingear retraction arm.(Referto SpecialInspection,700 and 2,800 Hour items.)
(2)
Inspect main landing gear inboard door hinges for cracks, with a 10X magnifying glass.
(f)
Starter Generator
(1)
Inspect starter generator brushes and commutator for wear, condition and security.
4. 300 Hour
(a)
Fuel Nozzles
(1)
Inspectand check fuel nozzlesfor flow, leaks,damageand condition. (Referto Pratt & WhitneyMaintenanceManual (PT6A-61) P/N3034342.
EFFECTIVITY: 040-999
5-50-00 PAGE 1
Feb 1/98
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
A. SpecialInspections(continued)
4. 300 Hour(continued) WARNING: DO NOT PERMIT OIL, GREASE OR OTHER PETROLEUM PRODUCTS TO COME IN CONTACT WITH ANY LINES OR FITTINGS UTILIZED IN THE OXYGEN SYSTEM. BE SURE SKIN AND CLOTHING ARE FREE OF OIL, GREASE,
GASOLINE OR OTHER PETROLEUM PRODUCTS BEFORE WORKING ON ANY COMPONENTS OF THE OXYGEN SYSTEM.
(b)
Oxygen System
(1)
Inspect pressure regulator for condition and operation. Overhaul or replace after each 5 years in service.
(c)
Environmental
(1)
Clean water separator coalescer.
(d)
Engines(PT6A)
Left Right
(1)
Retorqueenginemountbolts.
5. 400 Hour
(a) Oil Drain
NOTE: Refer to latest Pratt & WhitneyCanadaService Bulletin No. 13001 (PT6A-61). Regularoil changes are not necessary. Operatorsshouldbe aware of the dangerof oil contamination, whichwould require the oil system to be drained, flushedand replenishedwith new oil of an approvedbrand.
6. 500 Hour
(a)
Static System
(1)
Inspect static system drain assembly for corrosion. (Refer to 34-10-00)
(b)
Environmental
(1)
Inspect water aspirator nozzle and hose for condition.
(c)
Oil System
(1)
Inspect and clean engine oil scavenge screen on reduction gear box.
(d)
Flap Transmission
(1)
Inspect flap transmission to determine useful service life at first 500 hours of operation and every 100 hours thereafter. (Refer to 27-50-00)
7. 600 Hour
(a)
Engine
Left Right
(1)
Functional test of Magnetic Chip Detector. (refer to Pratt & Whitney Manual 3034342)
8. 700 Hour
(a)
LandingGear
Nose Left Right
(1)
Performfirst inspectionof the main landing gear retractionarm, P/N 42042-02, then every 100 Hours. (SeeSpecialInspection2,800 Hour Item)
9. 1,000 Hour
(a)
Engines(PT6A)
Left Right
(1)
Overhaulor replace startergenerators.
(2)
Replace compressor P3 air filter.
(3)
Replaceenginemainoil filter element.
EFFECTIVITY: 040-999
Feb 198 5-50-00
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
A. SpecialInspections(continued)
9. 1,000Hour (continued)
(b)
Rudder Pedals
(1)
Inspectrudderpedaltorquetube brackets for cracks. Replaceupon condition. (Notrequiredif Service BulletinNo.888 hasbeen complied with.)
(c)
FlexibleLines/Hoses To assure continuedhoseintegrity,it is suggested the following inspectionproceduresbe accomplishedaftereach 1,000hoursof operation:
(1) Pressurize the flexible fuel lines with the fuel boost pump operating.
NOTE: Placethe condition leverstoppositionpriorto using the boost pump forfuel
systempressurization.
(2) (3) Examine the hose exterior for evidence of leakage or wetness. Inspectfordiscolorationof the hosesand/orcolor bleaching of the end fittings.
(4) Check the hoses for evidence of stiffness.
(5) Replaceanyflexiblehoses which arefoundleakingor which show anotableamountofstiffness.
