PIPER COMANCHE SERVICE MANUAL
04/01/09 III - INSPECTION
1D45
3-9. Unscheduled Maintenance Checks
WARNING: FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S), WHEN
SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER
AIRCRAFT, MAY RENDER THE AIRCRAFT UNAIRWORTHY. (SEE
INTRODUCTION - SUPPLEMENTARY PUBLICATIONS.)
The following inspections are required in response to specific anomalies encountered during aircraft
operation. Note that the items listed herein are guidelines based on past operating experience. Each
operator should closely monitor his own unique operating conditions/environment and react accordingly
to keep his aircraft airworthy.
NO
TE: A log book entry should be made upon completion of any inspections.
A. Lightning Strike
Item Inspection Inspection Interval
 Propeller. Hartzell Propellers - refer to the Each occurrence,
inspection requirements in the latest before further flight.
revision of Hartzell Manual No. 115N,
168, 169, or 175.
McCauley Propellers - see latest
revision of McCauley SB 177. before further flight.
 Engine. See latest revisions of appropriate Each occurrence,
Lycoming Service Bulletins before further flight.
and Overhaul Manual.
 Electrical and Avionics Inspect and check harness, connections, Each occurrence,
Systems. and equipment for high voltage damage, before further flight.
burns and insulation degradation. Replace
or overhaul as required. Consult with
appropriate avionics vendor(s) for
inspections and operational checks. Bench
test alternator and voltage regulator(s).
(See Electrical System, Section IX.)
 All exterior surfaces, skins, Inspect for burns, evidence of arcing, Each occurrence,
and structure. and damage on surfaces and bearings. before further flight.
Check for correct material properties in
the area of the strike path. Degauss
engine mount. Replace or repair
affected areas/parts.
 System Components. Inspect instrumentation, vacuum, Each occurrence,
pitot/static, and fuel systems, before further flight.
for damage and correct operation.
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