Emergency – Dual bleed loss Scenario of A320 family / A330 aircraft inflight – Crew action !

Emergency – Dual bleed loss Scenario of A320 family / A330 aircrafts inflight – Crew action !

✈ Dual bleed Loss Scenario :

👉 A Dual Bleed Loss situation corresponds to the loss of both engine bleed air systems.

👉 The Loss of the first bleed system may be either be triggered inflight or dispatch under MEL from departure.

👉 The remaining engine bleed system (second) is capable of supplying all the bleed functions.

👉 Under above circumstances, a fault on this second system triggers the ‘DBL’ situation.

✈A320 Family / A330 Dual bleed loss Crew action !

A Dual Bleed Loss requires a quick identification of the situation and a rapid reaction.

👉 A single reset of each engine bleed (provided there is no bleed leak).

👉 If the reset is unsuccessful, rapid initiation of the descent, (when above FL100).

👉 APU start (Backup bleed source is the APU).

👉 APU bleed selection when within the APU bleed envelope (FL220/200 depending on APU).

👉 A second reset at lower altitude (High success rate).

✈Note : Always Refer FCOM/QRH for actions.

Author – Tanmay Palei
Sr. Aircraft Structure Engineer