Narrative:

We were dispatched with bscu #2 deferred. About 1:45 into the flight we got brakes a/skid NWS fault ECAM with cat 3 dual; a/skid; north/west steering; bscu 1 and bscu 2 inoperative on the status page. Having departed with bscu #2 inoperative and the status page now showing bscu #1 inoperative also; I tried the FM bscu reset with no effect. Established a phone patch with maintenance control and dispatch. Maintenance control had no further suggestions and it was determined we would be landing with alternate brakes; no antiskid or nose wheel steering. A tow in from the runway would be required. Given better facilities in ZZZ then ZZZ2 I suggested diverting to ZZZ; maintenance control and dispatch agreed. (ZZZ wx was good with light north winds) we discussed communications; dispatch would advise ZZZ ops and tower or our situation; we would arrange the destination change with ATC. We were about 250 miles from ZZZ. The first officer and I discussed landing and; due to the lack of steering and possibility of tire damage decided a cabin prep would be prudent. I had the purser come to the cockpit and we briefed all items for the for the prep with about 30 minutes to go. She went back to brief her crew and after a few minutes I made a PA telling the passengers what was going on and what was going to happen. We proceeded toward ZZZ and reviewed landing distance requirements; FM procedures and system descriptions. About 20 or 25 minutes later the purser called back advising that they were ready in back. As we approached ZZZ we verified that ATC knew we would be an emergency for the landing and that equipment was in place. It was. ZZZ had several wind changes and we discussed which runway would be best for minimum cross wind and no tailwind. We ended up using xxr with southwest winds at about 12 knots. Landing was uneventful and we were able to stay on the centerline and stop without incident. Airport operations personnel and emergency equipment checked our main gear and found no abnormalities. Maintenance towed us to the gate.

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Original NASA ASRS Text

Title: A320 Captain reports being dispatched with BSCU #2 deferred. Enroute BSCU #1 fails which results in the loss of normal brakes and nose wheel steering. The crew elects to diverts to an airport with a longer runway and lands safely.

Narrative: We were dispatched with BSCU #2 deferred. About 1:45 into the flight we got BRAKES A/Skid NWS FAULT ECAM with Cat 3 Dual; A/Skid; N/W steering; BSCU 1 and BSCU 2 INOP on the status page. Having departed with BSCU #2 INOP and the status page now showing BSCU #1 INOP also; I tried the FM BSCU reset with no effect. Established a phone patch with Maintenance Control and Dispatch. Maintenance Control had no further suggestions and it was determined we would be landing with alternate brakes; no antiskid or nose wheel steering. A tow in from the runway would be required. Given better facilities in ZZZ then ZZZ2 I suggested diverting to ZZZ; Maintenance Control and Dispatch agreed. (ZZZ wx was good with light north winds) We discussed communications; Dispatch would advise ZZZ ops and Tower or our situation; we would arrange the destination change with ATC. We were about 250 miles from ZZZ. The First Officer and I discussed landing and; due to the lack of steering and possibility of tire damage decided a cabin prep would be prudent. I had the Purser come to the cockpit and we briefed all items for the for the prep with about 30 minutes to go. She went back to brief her crew and after a few minutes I made a PA telling the passengers what was going on and what was going to happen. We proceeded toward ZZZ and reviewed landing distance requirements; FM procedures and system descriptions. About 20 or 25 minutes later the purser called back advising that they were ready in back. As we approached ZZZ we verified that ATC knew we would be an emergency for the landing and that equipment was in place. It was. ZZZ had several wind changes and we discussed which runway would be best for minimum cross wind and no tailwind. We ended up using XXR with SW winds at about 12 knots. Landing was uneventful and we were able to stay on the centerline and stop without incident. Airport OPS personnel and emergency equipment checked our main gear and found no abnormalities. Maintenance towed us to the gate.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.