Hey everyone!
This topic is for all of you guys who want to have a flying mount in Azeroth.

[Patch 3.0.3]

Steps:

1. Download this
2. Copy the arcemu-world.exe and paste it into the arcemu core(delete your old one)
3. Delete your old script_bin folder and insert the new one.
4. Start the server.

Password for arcemu-world.exe is: colamancool

Here is a SQL Custom Mount made by my friend.
.character additem 99546



Code:
INSERT INTO items (entry, class, subclass, field4, name1, name2, name3, name4, displayid, quality, flags, buyprice, sellprice, inventorytype, allowableclass, allowablerace, itemlevel, requiredlevel, RequiredSkill, RequiredSkillRank, RequiredSkillSubRank, RequiredPlayerRank1, RequiredPlayerRank2, RequiredFaction, RequiredFactionStanding, `Unique`, maxcount, ContainerSlots, stat_type1, stat_value1, stat_type2, stat_value2, stat_type3, stat_value3, stat_type4, stat_value4, stat_type5, stat_value5, stat_type6, stat_value6, stat_type7, stat_value7, stat_type8, stat_value8, stat_type9, stat_value9, stat_type10, stat_value10, dmg_min1, dmg_max1, dmg_type1, dmg_min2, dmg_max2, dmg_type2, dmg_min3, dmg_max3, dmg_type3, dmg_min4, dmg_max4, dmg_type4, dmg_min5, dmg_max5, dmg_type5, armor, holy_res, fire_res, nature_res, frost_res, shadow_res, arcane_res, delay, ammo_type, `range`, spellid_1, spelltrigger_1, spellcharges_1, spellcooldown_1, spellcategory_1, spellcategorycooldown_1, spellid_2, spelltrigger_2, spellcharges_2, spellcooldown_2, spellcategory_2, spellcategorycooldown_2, spellid_3, spelltrigger_3, spellcharges_3, spellcooldown_3, spellcategory_3, spellcategorycooldown_3, spellid_4, spelltrigger_4, spellcharges_4, spellcooldown_4, spellcategory_4, spellcategorycooldown_4, spellid_5, spelltrigger_5, spellcharges_5, spellcooldown_5, spellcategory_5, spellcategorycooldown_5, bonding, description, page_id, page_language, page_material, quest_id, lock_id, lock_material, sheathID, randomprop, unk203_1, block, itemset, MaxDurability, ZoneNameID, mapid, bagfamily, TotemCategory, socket_color_1, unk201_3, socket_color_2, unk201_5, socket_color_3, unk201_7, socket_bonus, GemProperties, ReqDisenchantSkill, unk2)                     VALUES (99546,4,0,-1,"Flying Gryphon","Flying Gryphon","Flying Gryphon","Flying Gryphon",39239,5,0,0000,0000,12,-1,-1,0,0,0,0,0,0,0,0,0,0,1,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32242,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,"Fly everywhere with this",0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);


Remember to equip the trinket in order to use the mount.

Enjoy flying in Azeroth!