1. Confirmer l’item, la catégorie et le nombre requis dans le MEL officiel (lien PDF).
2. Appliquer les procédures (O) et/ou (M) du MEL avant dispatch — texte officiel ci-dessous.
3. Placard (texte MEL) :
Apply sticker adjacent to Wing Anti-Ice Switch.
4. Journey log / other instructions (texte MEL) :
Print the following information in the journey log sheet.
(LEFT)(RIGHT)(BOTH) WING ANTI-ICE VALVE(S) INOP (OPEN) (CLOSED)- OBSERVE
LIMITATIONS
5. Respecter toutes les restrictions du MEL — ne pas en inventer.
(O) OPERATIONS PROCEDURES — texte MEL :
30-01 Wing Anti-Ice Valves Inop Closed:
NOTE: Disconnecting the wing anti-ice valve's electrical connector will cause the associated wing
anti-ice VALVE OPEN light to illuminate bright.
Do not operate in icing conditions.
30-01-02 Wing Anti-Ice Valve Inop Open:
NOTE 1: Disconnecting the wing anti-ice valve's electrical connector will cause the associated wing
anti-ice VALVE OPEN light to illuminate bright.
NOTE 2: With the affected wing anti-ice valve open, bleed trip off and possible loss of cabin
pressure above approximately FL350 may occur.
1. When the left Wing Anti-ice Valve is failed open, do not use APU bleed air for air conditioning
purposes on the ground. APU may only be used for engine start.
2. When the right Wing Anti-ice Valve is failed open, APU bleed air may be used for air conditioning
purposes on the ground using only the left AC pack and with the isolation valve closed.
3. The engine bleed to the affected manifold must be off for takeoff. Position the isolation valve
switch to CLOSE to maintain isolated bleed sources. The isolation valve switch must remain in the
CLOSE position until the associated manifold can be pressurized by turning the engine bleed on
(see MEL temperature restrictions).
4. When dispatching with a single engine bleed on for takeoff and landing due to one wing anti-ice
valve failed open (airplane pressurized), V1(MCG) should be determined based on AC packs OFF.
Takeoff performance should be based on AC packs AUTO.
5. Increase trip fuel burn by 2.8%.
(M) MAINTENANCE PROCEDURES — texte MEL (maintenance ; l’équipage vérifie que c’est fait) :
None required.
(M#) MAINTENANCE PROCEDURES — personnel maintenance obligatoire — texte MEL :
30-01 Wing Anti-Ice Valves Inop Closed:
Prepare the airplane for flight with wing anti-ice valve inoperative (AMM 30-00-00/901):
1. Prepare to close the valve:
a) Deactivate the leading edge slats (AMM 27-81-00).
b) Open and collar the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
c) Open the associated outboard leading edge blowout door.
2. Disconnect, cap and stow the electrical connector from the associated wing anti-ice valve.
NOTE: Disconnecting the wing anti-ice valve's electrical connector will cause the associated
wing anti-ice VALVE OPEN light to illuminate bright.
3. Move the red lever on the associated wing anti-ice valve to the CLOSED position.
4. Return the airplane to its usual condition with a wing anti-ice valve closed:
a) Close the outboard leading edge blowout door.
b) Close the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
c) Activate the leading edge slats (AMM 27-81-00).
d) Advise Dispatch. Flight Planning will be affected.
30-01-02 Wing Anti-Ice Valve Inop Open:
1. Prepare the airplane for flight with wing anti-ice valve inoperative (AMM 30-00-00/901):
2. For dispatch with left valve open:
a) To open the left valve when APU bleed air will be used for engine start, do these steps:
1. Deactivate the leading edge slats (AMM 27-81-00).
2. Open and collar the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
3. Open the associated outboard leading edge blowout door.
4. Disconnect, cap and stow the electrical connector from the left wing anti-ice valve.
NOTE: Disconnecting the wing anti-ice valve's electrical connector will cause the associated
wing anti-ice VALVE OPEN light to illuminate bright.
5. Move the red lever on the left wing anti-ice valve to the CLOSED position.
6. Make sure that all personnel are cleared from the right engine danger area.
7. Start the right engine (AMM 71-00-00).
8. Close the isolation valve switch and APU bleed air valve switch on the flight deck to
depressurize the left pneumatic duct.
9. After the pneumatic duct is depressurized, move the left wing anti-ice valve to the OPEN
position.
10. Close the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
11. Close the associated outboard leading edge blowout door.
12. Activate the leading edge slats (AMM 27-81-00).
13. When personnel have been cleared from engine danger area, inform flight deck that left
engine may be started (using engine crossbleed).
Continued…
b) To open the left valve when ground service air will be used for engine start, do these steps:
1. Deactivate the leading edge slats (AMM 27-81-00).
2. Open and collar the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
3. Open the associated outboard leading edge blowout door.
4. Disconnect, cap and stow the electrical connector from the left wing anti-ice valve.
NOTE: Disconnecting the wing anti-ice valve's electrical connector will cause the associated
wing anti-ice VALVE OPEN light to illuminate bright.
5. Move the red lever on the left wing anti-ice valve to the OPEN position.
6. Close the associated outboard leading edge blowout door.
7. Close the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
8. Activate the leading edge slats (AMM 27-81-00).
9. When personnel have been cleared from engine danger area, inform flight deck that the
right engine may be started (isolation valve closed) and then the left engine may be
started (using crossbleed start).
3. For dispatch with right valve open:
a) To open the right valve when APU bleed air will be used for engine start, do these steps:
1. Deactivate the leading edge slats (AMM 27-81-00).
2. Open and collar the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
3. Open the associated outboard leading edge blowout door.
4. Disconnect, cap and stow the electrical connector from the right wing anti-ice valve.
NOTE: Disconnecting the wing anti-ice valve's electrical connector will cause the associated
wing anti-ice VALVE OPEN light to illuminate bright.
5. Move the red lever on the right wing anti-ice valve to the OPEN position.
6. Close the associated outboard leading edge blowout door.
7. Close the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
8. Activate the leading edge slats (AMM 27-81-00).
9. When personnel have been cleared from engine danger area, inform flight deck that the
left engine may be started (isolation valve closed) and then the right engine may be
started (using crossbleed start)
b) To open the right valve when ground service air will be used for engine start, do these steps:
1. Deactivate the leading edge slats (AMM 27-81-00).
2. Open and collar the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
3. Open the associated outboard leading edge blowout door.
4. Disconnect, cap and stow the electrical connector from the right wing anti-ice valve.
NOTE: Disconnecting the wing anti-ice valve's electrical connector will cause the associated
wing anti-ice VALVE OPEN light to illuminate bright.
5. Move the red lever on the right wing anti-ice valve to the CLOSED position.
6. Make sure that all personnel are cleared from the left engine danger area.
7. Start the left engine (AMM 71-00-00).
8. Remove the ground air source from the airplane.
9. Close the isolation valve switch on the flight deck to depressurize the right pneumatic
duct.
Continued…
10. After the pneumatic duct is depressurized, move the right wing anti-ice valve to the OPEN
position.
11. Close the associated outboard leading edge blowout door.
12. Close the ANTI-ICE AND RAIN WING ANTI-ICE VALVE circuit breaker.
13. Activate the leading edge slats (AMM 27-81-00).
14. When personnel have been cleared from engine danger area, inform flight deck that right
engine may be started (using engine crossbleed).