- if no particle is found after the run-up check, inspect the master chip detector (Ref. TASK 79-00-00-281-002) after each flight until you get the analysis results from the laboratory. If any particle is found on the Master Chip Detector during these post-flight inspection, inspect the magnetic bars and limit engine operation to 5 cycles or 25 hours.
- if you find particles after the run-up check on the master chip detector or/and on the magnetic bars, limit engine operation to 5 cycles or 25 hours. Inspect the master chip detector (Ref. TASK 79-00-00-281-002) after each flight, until you get the analysis report from the laboratory. Inspect the magnetic bars only if the source of the particles is not already identified (Ref. TASK 79-00-00-281-002).
(2) Non-magnetic particles:
CAUTION : IF YOU FIND A LARGE QUANTITY OF PARTICLES IN THE SCAVENGE
_______ SCREENS YOU MUST KNOW THAT SUBSEQUENT ENGINE OPERATION CAN MAKE THE ENGINE DAMAGE WORSE.
(a) NORMAL CONDITION: Less than four (4) particles with the largest less than 0.4 in. (10 mm).
(b) ABNORMAL CONDITION: More than four (4) particles, or any quantity with the largest more than 0.4 in. (10 mm):
1 Send the particles to the laboratory.
_
2 Install the scavenge screen plugs (Ref. TASK 79-21-10-400-
_
007).
3 Operate the engine at 70 percent N1 for 10 minutes.
_
4 Check the scavenge screen plugs:
_
- if you find particles less than 0.2 in. (5 mm), examine the scavenge screen plugs after each flight until you get the analysis from the laboratory. If any particles more than 0.2 in. (5 mm) are found during these post-flight inspections, limit engine operation to ten (10) cycles.
- if you find particles more than 0.2 in. (5 mm), limit operation to ten (10) cycles. Examine the scavenge screens after each flight until you get the analysis from the laboratory.
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D. Installation of the Scavenge Screen Plugs:
(1) Install the scavenge screen plugs in the lubrication unit (Ref. TASK 79-21-10-400-007).
Subtask 79-00-00-281-054
E. If necessary, use the same check procedure for the other scavenge screen plugs.
5. Close-up
________ Subtask 79-00-00-410-056
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the fan cowls (Ref. TASK 71-13-00-410-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR.
(3) Remove the warning notice(s).
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TASK 79-00-00-280-002
Inspection/Check of the Antisiphon Device
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
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