P2012
AIRCRAFT MAINTENANCE MANUAL
NOTE: (***) The ispection tasks, is superseded by those in ATA 5, Supplement S22, if MOD2012/097 is installed.
ATA Aircraft Zone Maintenance Task Frequency
A B C D E
FUEL SYSTEM
28-00 Fuel System Inspect fuel tank vent valves free from obstruction.
X
28-00 Fuel System Inspect fuel system rigid lines (steel and light alloy items, including
crossfeed lines) for leaks, chafing and security of installation and
clamps. Inspect all torque seal on AN fittings, including union fitting
on LH wing root for combunstion heater installation.
X
28-00 Fuel System Remove all wing inspection caps and inspect internally fuel tanks
and lines for leaks sealing and condition/cleanliness. Clean tank if
required.
X
28-00 Fuel System Check fuel tank sump drain valves for conditions and security.
X
28-00 Fuel System Check visually fuel suction pipe filter (via inspection caps W25A
and W24I) for condition, operation and correct installation. Inspect
the fuel suction pipe for integrity and security of installation
X
28-00 Fuel System Clean fuel suction pipe filter by removing it.
X
28-00 Fuel System Replace high pressure fuel system filter
600 FH or 1 year
(wof)
(***)
28-00 Fuel System Perform fuel check valve operational test
600 FH or 1 year
(wof)
(***)
28-00 Fuel System Inspect fuel system check valve. Perform cleaning and clogging
indication check.
600 FH or 1 year
(wof)
(***)
28-00 Fuel System Clean gascolator filter. Check gascolator drain valve for condition
and operation.
600 FH or 1 year
(wof)
(***)
28-00 Fuel System Inspect fuel selector valves for leaks, general condition and security
of installation
X
28-00 Fuel System Inspect operation of fuel selector valve control levers. Check for
selector valve and bowden cable restricted movement, interference
or unusual play.
X
28-00 Fuel System Check electrical fuel pump electrical connections and operation.
Check fuel line connections for leakage.
X
28-00 Fuel System Visually inspect (Inboard and Outboard), the fuel level sensor for
damage, cracks, leaks, corrosion and electric wires connections.
Check for correct operation.
X
28-00 Fuel System Inspect Hose Assembly LH and RH Visual Inspection for Condition,
proper installation and leaks
X
28-00 Fuel System Inspect Stainless Steel Pipes Assembly LH and RH for Condition,
proper installation and leaks
X
28-00 Fuel System Inspect Manifold Block Assembly LH and RH for condition, proper
installation leaks
X
28-00 Fuel System Perform Pressure Switch Test according to the procedure (Refer to
X
05-20-00
Page 15
5
th
Edition - Rev. 0
2022, Jan 14
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