Lycoming YO-233-B2A Maintenance Manual page 72

(b) Given these possibilities and the fact that there is no identified clear, quantifiable
threshold limit or gradient standard to reliably measure the extent of damage to an
engine, Lycoming Engines can only recommend BEFORE FURTHER FLIGHT, that
you complete the tasks in the sequential order shown in Engine Inspection Checklist
After Propeller Strike as the corrective action for a propeller strike.
NOTICE: The agency that return the aircraft to service is responsible for the decision
(5) Make a copy of this checklist; complete it and keep it as a service record. Record all
results and any corrective action taken in the engine logbook.
Engine Inspection Checklist After Propeller Strike for YO-233-B2A Series Engines
Engine Model Number:
Date Inspection Started:
Sequential Task
1. Examine the propeller for extent of
damage; record condition of
propeller.
2. Remove the propeller.
3. Remove the engine.
CRANKCASE P/N:
4. Disassemble the engine - remove
the crankshaft, camshaft,
connecting rods, crankshaft gear,
and internal steel parts.
Complete grit-blast cleaning* of
5.
the crankcase with fine abrasive
(150-grit or finer) remove all
coatings on the crankcase and
engine mount bosses.
05-50
Page 52
to operate and engine that had a propeller strike. Lycoming Engines does not
take responsibility for the decision to return the engine to service after a
propeller strike.
Condition of Propeller/Corrective
Action:
Propeller satisfactory
Repair propeller in accordance
with propeller manufacturer's
instructions
Replace propeller in accordance
with the airframe manufacturer's
instructions.
As per airframe and propeller
manufacturer's instructions.
Refer to Chapter 72-00
Refer to Table 1 - Sequence of
Engine Disassembly in Chapter 72-
05
Make sure there is no dirt, debris,
sludge, paint, or any other
substance that could prevent
reliable Fluorescent Penetrant
Inspection (FPI) or subsequent oil
flow.
YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
Engine Serial Number:
Date Inspection Completed:
Additional Information
MATCH NO:
© 2021 Avco Corporation. All Rights Reserved
Corrective Action
Done/Comments
February 2021