S 212-013
(4)
If the valve that follows was open during a volcanic ash fallout, clean the total Equipment Cooling System (AMM 21-58-00).
(a) Equipment Cooling Overboard Exhaust Valve.
S 162-014
(5)
Clean the primary and secondary heat exchangers as necessary (AMM 21-51-02).
(6)
Remove the primary Water Extractor for examination (AMM 21-51-04).
S 022-015
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(7) S 162-016If volcanic ash is found in the water extractor, clean the Primary Water Extractor as necessary.
(8) S 022-017Remove the Secondary Water Extractor for examination (AMM 21-51-21).
(9) S 162-018If volcanic ash is found in the water extractor, clean the Secondary Water Extractor as necessary.
S 022-019
(10)
Remove the pack Flow Control and Shutoff Valves for examination (AMM 21-51-01).
S 212-020
(11)
Examine the pack Flow Control and Shutoff Valves for signs of volcanic ash (AMM 21-51-01).
S 022-021
(12)
Remove the pack Heat Exchangers for examination (AMM 21-51-02).
S 212-022
(13)
Examine the pack Heat Exchangers for signs of volcanic ash (AMM 21-51-02).
S 022-023
(14)
Remove the Equipment Cooling Air Filters for examination (AMM 21-58-07).
S 022-025
(15)
Remove the Recirculating Air Fans for examination (AMM 21-25-01/401)
S 022-026
(16)
Examine the Recirculating Air Fans for signs of volcanic ash (AMM 21-25-01/401).
S 212-027
(17)
Examine the Recirculation Air Filters for volcanic ash (AMM 21-25-02/401).
S 022-028
(18)
Remove the Cabin Pressure Outflow Valve for examination (AMM 21-31-03).
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S 212-029
(19)
Examine the Cabin Pressure Outflow Valve for volcanic ash (AMM 21-31-03).
S 022-030
(20)
Remove the actuator for the Cabin Pressure Outflow Valve for examination (AMM 21-31-04).
S 212-031
(21)
Examine the actuator for the Cabin Pressure Outflow Valve for volcanic ash (AMM 21-31-04).
S 022-032
(22)
Remove the Cabin Air Supply Check Valves for examination (AMM 21-51-15).
S 212-033
(23)
Examine the Cabin Air Supply Check Valves for volcanic ash (AMM 21-51-15).
S 212-034
(24)
Examine the Overboard Exhaust Valve for volcanic ash. If the valve was closed, remove the volcanic ash from the external surface (AMM 21-58-05).
S 022-035
(25)
If the Overboard Exhaust Valve was open, remove the valve (AMM 21-58-05).
S 022-036
(26)
Remove the Recirculation Air Check Valve for examination (AMM 21-25-03).
S 212-037
(27)
Examine the Recirculation Air Check Valve for volcanic ash (AMM 21-25-03).
S 022-038
(28)
Remove the Positive Pressure Relief Valve for examination (AMM 21-32-01).
S 212-039
(29)
Examine the Positive Pressure Relief Valve for volcanic ash (AMM 21-32-01).
S 022-040
(30)
Remove the Vacuum Pressure Relief Valve for examination (AMM 21-32-02).
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