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 on or adjacent to affected BLEED TRIP OFF light(s).
4. Journey log / other instructions (texte MEL) :
Print the following information in the journey log sheet.
(L) (R) (BOTH) ENGINE BLEED TRIP OFF LIGHT(S) INOP - DO NOT OPERATE IN ICING
CONDITIONS
5. Respecter toutes les restrictions du MEL — ne pas en inventer.
(O) OPERATIONS PROCEDURES — texte MEL :
NOTE 1: Use of the APU bleed air is limited to 17,000 feet. One air conditioning pack will be
unusable when dispatching with: (1) the right engine bleed inoperative, (2) the left engine
bleed inoperative and flight altitude greater than 17,000 feet, or (3) both engine bleeds
inoperative.
NOTE 2: When dispatching with a single engine bleed on for takeoff (airplane pressurized),
V1(MCG) should be determined based on AC packs OFF. Takeoff performance should be
based on AC packs AUTO.
1. Do not dispatch into known or forecast icing conditions.
2. After engine start, position the associated engine BLEED switch to OFF.
3. For left engine bleed inoperative:
a) At altitudes 17,000 feet and below, operate the left pack using the APU bleed air, the right
pack using the right engine bleed and the isolation valve CLOSE.
b) At altitudes above 17,000 feet, operate with the APU bleed air OFF.
1. Limit altitude to FL 250.
2. Operate the left pack using the right engine bleed, the right pack OFF and isolation
valve OPEN.
4. For right engine bleed inoperative:
a) Limit altitude to FL 250.
b) Operate the left pack using the left engine bleed, right pack OFF, and isolation valve CLOSE.
NOTE: At altitudes 17,000 feet and below, increased air flow will occur when flaps are extended
(takeoff and landing) and the APU is used instead of engine bleed to supply bleed air to the
operating pack. Refer to Boeing Operations Manual, NO ENGINE BLEED TAKEOFF AND
LANDING PROCEDURE.
5. For both engine bleeds unusable:
a) Limit altitude to 17,000 feet.
b) Operate the left pack using APU bleed and isolation valve CLOSE.
Refer to Boeing Operations Manual, NO ENGINE BLEED TAKEOFF AND LANDING PROCEDURE.
(M) MAINTENANCE PROCEDURES — texte MEL (maintenance ; l’équipage vérifie que c’est fait) :
None required.
MAINTENANCE NOTE:
Advise Dispatch. Flight Planning will be affected.