The captain of an A319 with 1 of 2 bscu's inoperative questions the effects another bscu failing. Wi...

Attributes
ACN	716902
Time
Date	200611
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 250 flight time total : 7900 flight time type : 2000
ASRS Report	716902
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper documentation
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Maintenance Human Performance Aircraft Company
Primary Problem	Aircraft

Narrative:

We had a bscu #1 deferred inoperative; there is no dispatch restr with this situation. The only problem with the deferral is that if the other bscu goes inoperative the aircraft is now in a situation of being in accumulator brakes with no anti-skid and nosewheel steering. The real situation is that when I ask what else is lost with the second failure they do not know. That is why I will not fly with the bscu inoperative. We notified maintenance and the first mechanic showed up after 30 mins; his words were 'I can't help ya here; wouldn't know where to start; I am a 777/400 guy.' it then was 30 more mins and 2 right&east guys came up to the cockpit and told us they would be working on it. About 15 mins later they were out working a speed sensor on the #1 wheel. It took them 30 mins to get the speed sensor out of the wheel. I went down to discuss the time situation with them; they both had never done this procedure. By this time I had already gone up to the boarding area and made an announcement to the passenger to let them in on the situation. About 20 mins later we were given a new aircraft at gate X that had just arrived. There was no reason for this delay to have been 2 hours 30 mins the maintenance in ZZZ gave us 2 hours of delay.

Original NASA ASRS Text

Title: THE CAPT OF AN A319 WITH 1 OF 2 BSCU'S INOP QUESTIONS THE EFFECTS ANOTHER BSCU FAILING. WITHOUT AN ANSWER HE REQUESTS THE ACFT BE FIXED.

Narrative: WE HAD A BSCU #1 DEFERRED INOP; THERE IS NO DISPATCH RESTR WITH THIS SITUATION. THE ONLY PROB WITH THE DEFERRAL IS THAT IF THE OTHER BSCU GOES INOP THE ACFT IS NOW IN A SITUATION OF BEING IN ACCUMULATOR BRAKES WITH NO ANTI-SKID AND NOSEWHEEL STEERING. THE REAL SITUATION IS THAT WHEN I ASK WHAT ELSE IS LOST WITH THE SECOND FAILURE THEY DO NOT KNOW. THAT IS WHY I WILL NOT FLY WITH THE BSCU INOP. WE NOTIFIED MAINT AND THE FIRST MECH SHOWED UP AFTER 30 MINS; HIS WORDS WERE 'I CAN'T HELP YA HERE; WOULDN'T KNOW WHERE TO START; I AM A 777/400 GUY.' IT THEN WAS 30 MORE MINS AND 2 R&E GUYS CAME UP TO THE COCKPIT AND TOLD US THEY WOULD BE WORKING ON IT. ABOUT 15 MINS LATER THEY WERE OUT WORKING A SPD SENSOR ON THE #1 WHEEL. IT TOOK THEM 30 MINS TO GET THE SPD SENSOR OUT OF THE WHEEL. I WENT DOWN TO DISCUSS THE TIME SITUATION WITH THEM; THEY BOTH HAD NEVER DONE THIS PROC. BY THIS TIME I HAD ALREADY GONE UP TO THE BOARDING AREA AND MADE AN ANNOUNCEMENT TO THE PAX TO LET THEM IN ON THE SITUATION. ABOUT 20 MINS LATER WE WERE GIVEN A NEW ACFT AT GATE X THAT HAD JUST ARRIVED. THERE WAS NO REASON FOR THIS DELAY TO HAVE BEEN 2 HRS 30 MINS THE MAINT IN ZZZ GAVE US 2 HRS OF DELAY.

Data retrieved from NASA's ASRS site as of January 2009 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.

The captain of an A319 with 1 of 2 bscu's inoperative questions the effects another bscu failing. Without an answer he requests the aircraft be fixed.