Narrative:

The airline I fly for is relatively new to the air freight business (5 yrs). Although our manuals and operations have greatly improved over the yrs, there is still much room for improvement. Today, just prior to departure, we were notified that our antiskid system and #5 brake were inoperative and had been deferred. Each dmi requires separate and long takeoff weight and v-spd calculations. Although it did not seem logical that 2 separate system such as these could be dmi'd together, we performed all the calculations. To double- check, we called our dispatch for their numbers and double- checked with maintenance. Both said we were legal to go. We flew the flight sdf to dfw without incident. However, en route, we discovered a paragraph in a separate manual (our aam) which said that it was 'not air carrier company policy to go with antiskid inoperative, and a brake deactivated.' after our experience, I am certainly in agreement with this policy. We have 4 sets of books that have to be researched: MEL, ddpg, aam, and aom at the last min with little time, conflicts between manuals, and pressure to make schedule. It is often difficult to make a satisfactory decision.

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Original NASA ASRS Text

Title: FLC OF AN LGT ACR ACFT OPERATED THE ACFT CONTRARY TO COMPANY ARPT ANALYSIS MANUAL (AAM) DUE TO THE ANTISKID AND 1 BRAKE INOP.

Narrative: THE AIRLINE I FLY FOR IS RELATIVELY NEW TO THE AIR FREIGHT BUSINESS (5 YRS). ALTHOUGH OUR MANUALS AND OPS HAVE GREATLY IMPROVED OVER THE YRS, THERE IS STILL MUCH ROOM FOR IMPROVEMENT. TODAY, JUST PRIOR TO DEP, WE WERE NOTIFIED THAT OUR ANTISKID SYS AND #5 BRAKE WERE INOP AND HAD BEEN DEFERRED. EACH DMI REQUIRES SEPARATE AND LONG TKOF WT AND V-SPD CALCULATIONS. ALTHOUGH IT DID NOT SEEM LOGICAL THAT 2 SEPARATE SYS SUCH AS THESE COULD BE DMI'D TOGETHER, WE PERFORMED ALL THE CALCULATIONS. TO DOUBLE- CHK, WE CALLED OUR DISPATCH FOR THEIR NUMBERS AND DOUBLE- CHKED WITH MAINT. BOTH SAID WE WERE LEGAL TO GO. WE FLEW THE FLT SDF TO DFW WITHOUT INCIDENT. HOWEVER, ENRTE, WE DISCOVERED A PARAGRAPH IN A SEPARATE MANUAL (OUR AAM) WHICH SAID THAT IT WAS 'NOT ACR COMPANY POLICY TO GO WITH ANTISKID INOP, AND A BRAKE DEACTIVATED.' AFTER OUR EXPERIENCE, I AM CERTAINLY IN AGREEMENT WITH THIS POLICY. WE HAVE 4 SETS OF BOOKS THAT HAVE TO BE RESEARCHED: MEL, DDPG, AAM, AND AOM AT THE LAST MIN WITH LITTLE TIME, CONFLICTS BTWN MANUALS, AND PRESSURE TO MAKE SCHEDULE. IT IS OFTEN DIFFICULT TO MAKE A SATISFACTORY DECISION.

Data retrieved from NASA's ASRS site as of July 2007 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.