(h) Examine the viscocity and phosphorus content of the oil.
NOTE: The engine may continue-in-service, as you wait for the
____ results of the analysis for contamination.
(i) If this analysis shows contamination, examine the oil for contamination from hydraulic fluid or jet fuel again.
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(2) Do this task: Put the Airplane Back to its Usual Condition.
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No. 9 - Volcanic Ash/Sand Ingestion Inspection/Check
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TASK 72-00-00-206-104-N00
9. Volcanic Ash/Sand Ingestion Inspection/Check____________________________________________
A. General
CAUTION: DO THIS INSPECTION AFTER EACH TIME THERE IS ASH OR SAND
_______ INGESTION, IF THERE ARE PROBLEMS OR IF THERE ARE NOT. INGESTION OF HIGH CONCENTRATIONS OF VOLCANIC ASH OR SAND IN AN ENGINE CAN CAUSE ENGINE OPERATION PROBLEMS SUCH AS A DECREASE IN POWER. ASH OR SAND CONTAMINATION IN THE ENGINE SYSTEMS CAN CAUSE PERFORMANCE DETERIORATION, BLOCKED COOLING AIR HOLES, AND ABRASIVE DAMAGE, AND OTHER PROBLEMS.
(1)
This procedure gives you the steps that you do after a high concentration of volcanic ash or sand goes into the engine. When ash or sand goes into the engine, this is referred to as ash or sand ingestion.
B.
Special Tools and Equipment
(1)
PWA 86018 - Adapter, Oil Sample, Pratt & Whitney, Commercial Products Division, 400 Main street, East Hartford, CT 06108
C.
References
(1)
AMM 12-22-03/301, Engine - Servicing
(2)
AMM 71-00-00/501, Power Plant
(3)
AMM 71-00-02/401, Power Plant
(4)
AMM 71-11-04/201, Fan Cowl Panel
(5)
AMM 71-11-06/201, Core Cowl Panel
(6)
AMM 73-11-02/401, Fuel Filter Element
(7)
AMM 73-11-04/701, Fuel Distribution Valve Strainer
(8)
AMM 75-33-05/201, PS3 Air Filter Element
(9)
AMM 78-31-00/201, Thrust Reverser System
(10)
AMM 79-21-05/401, Main Oil Filter Element
(11)
AMM 79-21-10/401, Magnetic Chip Detector
(12)
AMM 79-21-10/601, Magnetic Chip Detector
(13)
AMM 79-21-16/701, Last Chance Oil Strainer
D.
Access
(1)
Location Zone
412 Engine 1
422 Engine 2
432 Engine 3
442 Engine 4
E.
Prepare for the Volcanic Ash/Sand Ingestion Inspection/Check
(1)
Open the fan cowl panels (AMM 71-11-04/201).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
No. 9 - Volcanic Ash/Sand Ingestion Inspection/Check
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WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______
OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF
THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO
EQUIPMENT.
(2)
Do this procedure: Thrust Reverser Deactivation for Ground
Maintenance (AMM 78-31-00/201).
